diff --git a/_config.yml b/_config.yml index 137c6a65..ffd30ef6 100644 --- a/_config.yml +++ b/_config.yml @@ -78,6 +78,18 @@ page_gen: name: DataStoreID index_files: true debug: true + - data: sgn_list + template: sgn_issues + dir: community/sgn_issues + name: sgn_year + index_files: true + debug: true + - data: sgn_list + template: sgn_minutes + dir: community/sgn_minutes + name: sgn_year + index_files: true + debug: true # the default number of items shown in card widgets card_item_limit: 3 diff --git a/_data/community.yml b/_data/community.yml index 89f3829b..2a99c004 100644 --- a/_data/community.yml +++ b/_data/community.yml @@ -29,7 +29,7 @@ - description: "About the SoyBase Genetic Maps" url: "https://soybase.org/community/aboutgeneticmaps.php" - description: "Soybean Genetics Newsletter" - url: "https://soybase.org/sgn/" + url: "/community/sgn" - description: "2009 Soybean Genomic Sequence Assembly Announcement" url: "https://soybase.org/community/about_sequence_map.php" - description: "2000 Soybean Genomics White Paper" diff --git a/_data/sgn/sgn_1999/issue.yml b/_data/sgn/sgn_1999/issue.yml new file mode 100644 index 00000000..5a7aaefd --- /dev/null +++ b/_data/sgn/sgn_1999/issue.yml @@ -0,0 +1,225 @@ +--- +- title: "Inheritance of Resistance to Phytophthora sojae in the Soybean PI 567574A" + authors: "R. A. Leitz, C. D. Nickell, and G. L. Hartman" + abstract: " Phytophthora root rot of soybean can cause heavy crop losses. Monogenic race-specific resistance + to the causal organism, Phytophthora sojae, is controlled by 13 dominant alleles at seven loci + in soybean. Soybean germplasm lines have been identified with new race resistance patterns. + These lines need to be characterized to determine the inheritance of that resistance and + compared to known sources of resistance. The objective of this study was to characterize the + inheritance of resistance to P. sojae in PI 567574A. Results indicate that there are two + alleles at independent loci that control resistance in this PI. Allelism studies indicated that + the two alleles are Rps1c and Rps3a." + file: "Inheritance_of_Resistance_to_Phytophthora_sojae_in_the_Soybean_PI_567574A.pdf" + +- title: "Animation and Image Analysis for Evaluation of Soybean (Glycine max L. Merrill.) Somatic Embryo Growth" + authors: "Marco T. Buenrostro-Nava1,3, Holly M. Frantz1, Peter P. Ling2 and John J. Finer1,4" + abstract: " Recent advances in machine vision technology have resulted in an increase in the use of image + analysis in different areas of cell biology. Image analysis has been used to study in + vitro-grown animal cells using light microscopy (Gauthier et al., 1992) and the movement and + compartmentalization of proteins in plant cells using confocal microscopy (Haseloff and + Siemering, 1998).
In the area of plant developmental biology, image analysis has been + utilized with tissue culture systems to collect information on tissue growth and development. + Smith et al. (1989) were the first to use image analysis as a non-invasive method to evaluate + growth of in vitro cultures of some woody, vegetables and grass plants. Computer vision + techniques were later used to follow the kinetics of somatic embryo formation in suspension + cultures of carrot (Cazzulino et al., 1990; Ibaraki et al., 1996). In order to select coffee + somatic embryos with high germination efficiency, Ling et al. (1996) used machine vision to + first establish the relationship between the elongation coefficient and the growth aspect ratio + of mature embryos and then determine the ability of those embryos to germinate. Using computer + analysis to evaluate size, shape and color-related measurements from images of sweet potato + somatic embryos (during torpedo and cotyledonary-stage), Padmanabhan et al. (1998a) identified + germination-competent and non-competent embryo types and then compared these characteristics + with the embryo anatomy using histological analysis (Padmanabhan et al.,1998b). These reports + demonstrated the potential of image analysis for embryo growth studies. However, to our + knowledge, there are no reports on the use of image analysis to evaluate growth of somatic + embryos from their earliest developmental stage or using computer animation to better + understand embryo development and growth over time. For most analysis of plant biological + systems, evaluations are still based on human vision and results can often be highly variable + and very subjective. This makes comparisons difficult with qualitative data from different + laboratories.
The objective of this work was to demonstrate the capability of characterizing + somatic embryo development using image analysis and animation techniques." + file: "Animation_and_Image_Analysis_for_Evaluation_of_Soybean_Glycine_max_Somatic_Embryo_Growth.pdf" + +- title: "Segregation for Stem Canker resistance in Southern Soybean crosses" + authors: "J. Tyler" + abstract: " Stem Canker caused by Diaporthe phaseolorum (Cooke & Ellis) Sacc. f. sp. meridionalis + Morgan-Jones (Dpm) can cause significant yield losses in soybean [Glycine max (L.) Merr.] in + the southern USA. Some cultivars are resistant. The parental donor of resistance is unknown for + many cultivars, therefore it is not known which genes are the most common in the elite + germplasm base. Progeny from 44 resistant X resistant soybean genetic populations were + evaluated for their reaction to the fungus causing stem canker disease. Susceptible progeny + were identified in only 8 populations. The frequency of susceptible plants in those was low. + This indicates that few loci are represented in the current elite breeding gene pool. An + implication from the study is that breeders can delay testing for stem canker resistance until + very late phases of development if both parents are resistant." + file: "Segregation_for_Stem_Canker_resistance_in_Southern_Soybean_crosses.pdf" + +- title: "RAPD Markers Associated with Salt Tolerance In Wild Soybean Populations" + authors: "Q. Zhang, H. Wang, and Z. Hu" + abstract: " Salinity is a major environmental constraint to crop production in the arid and semi-arid regions + of the world (Greenway and Munns 1980). Most crop plants including wild soybeans are sensitive + to salt stress. Sources of salt tolerance have been identified among some related wild species. + These genetic resources could potentially be used to improve salt tolerance of soybean + cultivars.
One approach to facilitate the selection and breeding for complex traits such as + salt tolerance is the identification and utilization of simply inherited genetic markers that + are genetically associated with the trait of interest (Tanksley 1993; Foolad et al., 1995). In + previous study, we employed isozymes and RAPDs as genetic markers to identify the relationship + between the markers and salt-tolerance. Little correlation was found (Wang et al., 1997). The + present investigation was conducted to further examine randomly amplified polymorphism DNA + (RAPD) markers associated with salt tolerance and therefore to study the molecular mechanisms + of adaptation of wild soybean to changing saline conditions." + file: "RAPD_Markers_Associated_with_Salt_Tolerance_In_Wild_Soybean_Populations.pdf" + +- title: "Soybean Linkage Studies: y18 and y20" + authors: "J. D. Burzlaff, and R. G. Palmer" + abstract: " Amberger et al., (1992) reported that the Chinese cultivar Jilin 3 (PI 427099 [GRIN]) was very + conducive to generate variants from tissue culture. Among the progeny of a chimeric foliage + plant (LA55-1) identified in the R3 generation, were plants with green foliage, chimeric + foliage, and yellow viable, and yellow lethal plants. The yellow viable mutant was allelic to + y20 [Soybase] and the yellow lethal mutant was allelic to y18 [Soybase]. These data will be + reported elsewhere. Our objective was to determine linkage relationships of these two mutants + with morphological and isoenzyme mutants in soybean." + file: "Soybean_Linkage_Studies_y18_and_y20.pdf" + +- title: "Soybean Linkage Studies: Chlorophyll-deficient Mutant" + authors: "R. G. Palmer" + abstract: " In March 1981 A. Williams of Williams, IN sent seed to me harvested from a number of + chlorophyll-deficient plants. His mutant in cultivar Williams [GRIN] (78-2-80) was allelic to + y9 [Soybase] and was linked to pb (pubescence tip [Soybase]) (Thorson et al., 1989). His mutant + in cultivar Williams (78-3-80) was cytoplasmically inherited and was designated cyt-Y5 (T315 + [GRIN]) (Cianzio and Palmer, 1992). His mutant in cultivar Williams (80-7) was designated y23 + [Soybase] (T288 [GRIN]) and was placed on classical genetic linkage group 8 [Soybase] (Palmer + et al. 1990).
Our objective was to determine the inheritance and linkage relationships of + chlorophyll-deficient Williams (77-2-80) obtained from A. Williams." + file: "Soybean_Linkage_Studies_Chlorophyll_deficient_Mutant.pdf" + +- title: "Genetic Study on Resistance to Soybean Cyst Nematode (Heterodera glycines) Race 14 in Huibuzhi Black Bean from Xing County in Shanxi Province" + authors: "Yantong Wang1, Peng Deliang2, and Chen Shouyi3" + abstract: " Heterodera glycines is a serious disease in world soybean (Glycine max) production. Huibuzhi + black bean from Xing county in Shanxi province, China is one of the most important sources of + resistance. It is resistant to all investigated races, 1, 3, 4, 5 and 14 of SCN. It is also + widely used in Chinese breeding programs as a resistant donor. The objective of this research + is to determine SCN race type at the Experiment station, Plant Protection Institute, Chinese + Academy of Agricultural Sciences in Beijing and to investigate the inheritance of resistance of + the identified SCN race in Huibuzhi black bean." + file: "Genetic_Study_on_Resistance_to_Soybean_Cyst_Nematode_Heterodera_glycines_Race_14_in_Huibuzhi_Black_Bean.pdf" + +- title: "The Amino Acid Sequence Determination of a New Variant of Kunitz Soybean Trypsin Inhibitor (SBTi-A2)" + authors: "Xin Hua, Xie Kefang, Dong Aiwu, Yan Qingyan, and Gu Qimin" + abstract: " A substantial amount of Kunitz trypsin inhibitor (SBTi-A2) exists in soybean seeds. Three + codominant alleles, Ti-a[Soybase], Ti-b[Soybase] and Ti-c[Soybase] were identified and their + protein sequences have been determined. Ti-d was reported by Zhao Shuwen (1992), as a new + variant of SBTi-A2 discovered in the Gansu province of China. The amino acid sequence of Ti + protein was deduced from its DNA sequence which is obtained by PCR and determined by DNA + sequence analysis in our laboratory." + file: "The_Amino_Acid_Sequence_Determination_of_a_New_Variant_of_Kunitz_Soybean_Trypsin_Inhibitor_SBTi_A2.pdf" + +- title: "Effect of Different Mutagenic Treatments on Morphological Traits of M2 Generation of Soybean" + authors: "Martin Hajduch*2, Frantisek Debre3, Blanka Böhmová1, and Anna Pretová2" + abstract: " Despite the richness of the soybean germplasm collection the genetic base of the present day + collection remains poor (Delannay et al., 1983). Present investigation was, therefore, + undertaken to obtain information on effect of g-irradiation and sodium azide as well as their + combination on morphological traits of the M2 generation of two soybean cultivars Tolena and + Toping." + file: "Effect_of_Different_Mutagenic_Treatments_on_Morphological_Traits_of_M2_Generation_of.pdf" + +- title: "Inheritance of Partial Resistance to Sclerotinia sclerotiorum in Soybean Cultivars Asgrow A2506 and Novartis S19-90" + authors: "D. D. Hoffman1, A. D. Nickell2, C. D. Nickell1, B.W. Diers1, and G. L. Hartman1" + abstract: " Partial resistance to Sclerotinia stem rot (SSR), [Sclerotinia sclerotiorum (Lib.) de Bary] has + been identified in soybean [Glycine max (L.) Merr.] accessions and cultivars in the United + States. There have been no reports of the inheritance of partial resistance to S. sclerotiorum + in soybean. The objectives of this study were to: (i) estimate the number of genes contributing + to resistance to S. sclerotiorum in the soybean cultivars Asgrow A2506 and Novartis S19-90 and + (ii) estimate broad and narrow sense heritabilities. Data from greenhouse evaluations of three + crosses, Asgrow WR2347 x Asgrow A2506, Novartis S19-90 x Asgrow A2506, and Novartis S19-90 x + Asgrow WR2347, were used to estimate goodness of fit for theoretical inheritance models in F2 + and F3 generations and to estimate heritabilities. We found significant results indicating + partial resistance to S. sclerotiorum is caused by multiple genes and some may be recessive. + Estimates of heritabilities indicated more dominance occurred when Novartis S19-90 was used as + a parental line compared with Asgrow A2506. All heritability estimates based on F2:3 family + means (>0.86) were higher than the heritability estimates based on F2 plant basis. This + presages selection for partial resistance to S. sclerotiorum in soybean based on F2:3 family + means evaluation would be more efficient than selecting on a single F2 plant basis. The high + heritability estimates in our greenhouse evaluations are valuable to soybean breeders selecting + for partial resistance to S. sclerotiorum." + file: "Inheritance_of_Partial_Resistance_to_Sclerotinia_sclerotiorum_in_Soybean_Cultivars_Asgrow_A2506_and_Novartis_S19_90f.pdf" + +- title: "Influence of wp on Pod Characteristics and Agronomic Traits of Soybean Lines" + authors: "D. C. Gay, J. M. Hegstad, P. A. Stephens, and C. D. Nickell" + abstract: " Homozygous recessive wp alleles produce pink flower color in soybean when in the presence of the + non-allelic gene W1[Soybase] by modifying the expression of purple pigmentation (Stephens and + Nickell, 1992). Stephens et al. (1993) found no differences between pink and near-isogenic + purple-flowered soybean lines for the agronomic traits yield, maturity, height, lodging, and + seed quality. Pink flower soybeans differ from magenta flowered soybeans, which have the + genotype W1_wmwm[Soybase]. Magenta flower color lines were associated with a 3% reduction in + yield, attributed to a lower photosynthetic rate and earlier leaf senescence compared with + purple-flowered Harosoy[GRIN] (Buzzell et al., 1977).
Stephens et al. (1993) observed that + two-seeded pods were more prevalent in pink flowered lines, while purple-flowered lines + produced proportionally more three-seeded pods. However, seeds per pod or pods per plant were + not counted to determine the possible effect of wp upon pod characteristics. In petunia and + maize, it was determined that flavonols are required in the pollen grain to initiate pollen + tube growth and ensure successful fertilization (Taylor, 1995). The most diverse group of + flavonol compounds is the anthocyanins, which generate pigmentation in floral tissues. In + soybean, the wp locus is thought to modify anthocyanin production to generate pink flowers + instead of purple flowers, however it is unknown if there is a relationship between anthocyanin + modification and seeds per pod, or pods per plant.
Other studies have found a relationship + between leaflet shape and seeds per pod (Bernard and Weiss, 1973). The recessive gene + ln[Soybase] is responsible for both narrow leaflet shape and a predominance of four-seeded + pods. Another gene for leaflet shape, lo[Soybase], is associated with few-seeded pods (Domingo, + 1945).
In the literature, there are no reports relating flower color with seeds per pod or + loculi per pod. The objective of this study was to describe the influence of wp upon pod + characteristics and agronomic traits when crossed into a different genetic background." + file: "Influence_of_wp_on_Pod_Characteristics_and_Agronomic_Traits_of_Soybean_Lines.pdf" + +- title: "The Effect of Selection Method on the Association of Yield and Seed Protein with Agronomic Characters in an Interspecific Cross of Soybean" + authors: "Li Xinhai1, Wang Jinling1,Yang Qingkai1, Jiao Shaojie2, and Wang Liming2" + abstract: " Correlations of seed yield and protein percentage of soybeans (Glycine max) were variable. Seed + protein content was both positively and negatively associated with maturity (Kwon and Torrie + 1964; Weiss et al. 1952). Close relationships between protein content and either plant height + or lodging were not reported (Johnson et al. 1955a). In general, high seed yield was associated + with low protein percentage (Byth et al. 1969; Hartwig 1969; Hymowitz et al. 1972; Johnson et + al. 1955b), although positive correlations between those two traits were also observed among + progenies of some crosses (Kwon and Torrie 1964; Weiss et al. 1952). With respect to components + of yield, protein content has been positively and negatively associated with number of fruiting + nodes per plant and with number of seeds per pod, and has been positively associated with seed + size (Fehr and Weber 1968). In two populations, an inverse relationship was reported between + protein content and resistance to shattering (Johnson et al. 1955b)." + file: "The_Effect_of_Selection_Method_on_the_Association_of_Yield_and_Seed_Protein_with_Agronomic_Characters_in_a_Soybean_Interspecific_Cross.pdf" + +- title: "The Effects of Daylength on the Growth of Soybean and the Creation of Wide-adaptation Germplasm" + authors: "Guiru Zhang and Weiguang Du" + abstract: " There are plenty of reports about the photoperiodic response of soybean. The early studies were + mainly focused on the effect of daylength on blooming stage. Further studies showed that + daylength influences, not only the development of soybean before flowering, but also the + development between flowering and maturity (Major 1975, Akhanda et al. 1981, Liu et al. 1983). + He et al. (1993) and Han et al. (1995) investigated the post-flowering photoperiodic responses + of soybean by treating soybean with different daylengths before and after flowering. These + studies together proved that photoperiod affects the whole growth and development period, but + few studies have associated photoperiod with yield characters and creation of wide-adaptation + lines of soybean.
The goal of this study was to understand the response of cultivars to + different daylengths and to create daylength insensitive germplasm. These will provide + knowledge and material for high-yield breeding and photoperiodic breeding of soybean." + file: "The_Effects_of_Daylength_on_the_Growth_of_Soybean_and_the_Creation_of_Wide_adaptation_Germplasm.pdf" + +- title: "Genetic Analysis of Phytophthora Rot Resistance in the Soybean PI 567.496" + authors: "A. D. Jenks, R. A. Leitz, and C. D. Nickell" + abstract: " Phytophthora root rot, caused by Phytophthora sojae, has been a very harmful disease in soybeans + for many years. Recent crop loss estimates have ranked Phytophthora root rot as the second or + third most destructive disease for soybeans (Doupnik, 1993). Resistance to Phytophthora in + soybeans is controlled by thirteen dominant genes. There are fifty-three known races of the + pathogen (Ryley et al., 1998). The pathogen may attack plants in all stages of growth with + disease development favored by poorly drained soils and cool wet weather (Moots, et al., 1988)." + file: "Genetic_Analysis_of_Phytophthora_Rot_Resistance_in_the_Soybean_PI_567.496.pdf" + +- title: "Genetic Analysis of Phytophthora Rot Resistance in the Soybean PI 567.504" + authors: "D.J. Weber, R.A. Leitz, and C.D. Nickell" + abstract: " The soilborn fungus Phytophthora sojae causes the disease Phytophthora root rot. The disease can + attack soybeans at any stage of development. Seed rot and pre-emergence damping-off can occur + in flooded areas or ponded soils. Post-emergence damping-off and seedling stem rot cause + wilting and plant death (Schmitthenner, 1985). Plant Introduction (PI) 567.504 is resistant to + hypocotyl inoculation of races 1, 4, 7, 13, and 25 and susceptible to races 3, 5, 12, and 20. + Hegstad et al. (1998) suggested on the basis of RFLP analysis that PI 567.504 carries the Rps3a + gene for resistance to P. sojae. The objective of this study was to determine the genetic + control of resistance to P. sojae race 25 in PI 567.504." + file: "Genetic_Analysis_of_Phytophthora_Rot_Resistance_in_the_Soybean_PI_567.504.pdf" + diff --git a/_data/sgn/sgn_1999/minutes.yml b/_data/sgn/sgn_1999/minutes.yml new file mode 100644 index 00000000..19ea3fbc --- /dev/null +++ b/_data/sgn/sgn_1999/minutes.yml @@ -0,0 +1,42 @@ +--- +- year: 1999 + document: "The Soybean Genetics Committee met February 22, 1999 at the Sheraton Inn, St. Louis, MO in + conjunction with the Soybean Breeder's Workshop. Committee members attending the meeting + included P.R. Arelli, G.R. Buss, E.R. Cober, P.B. Cregan, B.W. Diers, R.J. Fioritto, R.L. + Nelson, and T.W. Pfeiffer. G.R. Buss and E.R. Cober were elected by mail ballot to serve + three-year terms on the committee. P.R. Arelli was elected chair for the year ending February, + 2000. Current members and February expiration dates for their terms on the committee + are:
P.R. Arelli (2000) (Chair) agroara@showme.missouri.edu
G.R. Buss (2002) + gbuss@vt.edu
E.R. Cober (2002) Coberer@em.agr.ca
P.B. Cregan (2001) + pcregan@nal.usda.gov
B.W. Diers (2000) bdiers@uiuc.edu
R.J. Fioritto (ex officio) + fioritto.1@osu.edu
D.G. Lohnes (ex officio) lohnes.2@osu.edu
R.L. Nelson (ex officio) + rnelson@uiuc.edu
T.W. Pfeiffer (2001) tpfeiffe@ca.uky.edu
Procedure
As in the past, + manuscripts concerning gene symbols and linkages should be sent to the Chairperson of the + Soybean Genetics Committee for review. To facilitate the review process, the Committee will + proceed as follows:
1. The review will only be for 'validity of the genetic interpretation' + and 'appropriateness of gene symbol.' Manuscripts will not be reviewed for style except as this + influences the clarity of interpretation. Authors may submit unpolished (but comprehensible) + manuscripts for review which should reduce delays involved in publishing a paper.
2. + Reviewers of manuscripts will be given a deadline of four weeks to return the reviewed + manuscript to the Chairperson who will then return it to the author as soon as possible. If the + reviewers have not returned the manuscript by this time or have not phoned in their comments, a + phone call will be made to remedy the situation. If authors have not received a reply within + two months of submission, they should contact the Chairperson of the Soybean Genetics + Committee.
Assignment/Approval of Gene Symbols
Seed samples containing named genes, and + especially those from induced mutants, variants from heterogeneous populations, or from + transgenic changes should be deposited in the Genetic Type Collection. Dr. R.L. Nelson is the + curator for all maturity groups. Click here for an application form.
Gene symbols will be + approved in cases where the relevant (germplasm) material is made available for subsequent + allelism testing. The Committee encourages authors not to assign any symbol when they are doing + genetic work on material that will not be made publicly available. (Publication of genetic + interpretation does not depend upon symbols, in most cases.) The purpose of assigning a symbol + is to ensure constancy when others use the material for subsequent studies. If the material is + not made available, a symbol is not necessary.
New Business
There was discussion at the + committee meeting on whether reports from the coordination sessions of the Soybean Breeder's + Workshop should be posted on the internet as part of the Soybean Genetics Newsletter Website. + Both the benefits and disadvantages of posting this information were discussed. A decision was + made that this information should not be posted on the internet at this time.
Gene + Symbols/Linkages assigned March 1998 - February 1999.
Date Author Trait Gene/Linkage +
4-28-98 T.R. Cary & C.D. Nickell Short petiolule Lc and lc
3-19-99 R.G. Palmer Genic + male-sterile Ms7 and ms7
female-fertile Ms8 and ms8
mutants Ms9 and ms9
Ms2 ms2 + (Ames)
Change T259H Ms2 ms2 to T259 Ms2 ms2 (Eldorado)" diff --git a/_data/sgn/sgn_2000/issue.yml b/_data/sgn/sgn_2000/issue.yml new file mode 100644 index 00000000..f2eff9f8 --- /dev/null +++ b/_data/sgn/sgn_2000/issue.yml @@ -0,0 +1,220 @@ +--- +- title: "A Preliminary Genetic Linkage Map of Soybean Using an Intraspecific Cross of Two Cultivars: 'Peking' and 'Lee'" + authors: "W. Yang1, D. B. Weaver1, B. L. Nielsen2 and J. Qiu3" + abstract: " A total of 64 EcoR I (+3) and Mse I (+3) primer combinations were used to generate amplified + fragment length polymorphisms in a soybean (Glycine max L. Merr.) mapping population that + consisted of 116 F2 plants from a cross between two cultivars: 'Peking' and 'Lee'. One hundred + eleven amplified fragment length polymorphism markers were developed from 30 primer pairs. A + molecular map consisting of 74 amplified fragment length polymorphisms, 2 simple sequence + repeats, and one phenotypic trait (RcsPeking, resistance to Cercospora sojina), has been + constructed. The map defined 599.8 cM of the soybean genome comprising 15 linkage groups. The + average interval between these markers was 11.9 cM. An additional 37 polymorphic markers + remained unlinked." + file: "A_Preliminary_Genetic_Linkage_Map_of_Soybean_Using_an_Intraspecific_Cross_of_Two_Cultivars_Peking_and_Lee.pdf" + +- title: "Genetic Variation in Wild Soybean (Glycine soja Sieb. & Zucc.) Populations Revealed with Simple Sequence Repeat Markers" + authors: "Yu Bin Li, Zhiang Hu (Author for Correspondence), Qin Zhang, Xin Deng, and Hong Xin Wang" + abstract: " Microsatellites or simple sequence repeats (SSRs) consist of tandemly repeated core sequences + that often vary in repeat number and are flanked by conserved DNA sequences. (Maughan et al + 1995). It is well-known that SSRs are ideal genetic markers in that they are (1) highly + abundant and evenly distributed (2) highly polymorphic (3) codominant (4) rapidly typed via PCR + and (5) very accessible to other laboratories via published primer sequences (Weber 1990; + Saghai-Maroof et al 1994). The length polymorphisms of SSRs in soybean and wild soybean + (Glycine soja) have been widely studied (Akkaya et al 1992; Jiang et al 1995; Akkaya et al + 1995; Maughan et al 1995 and Powell et al 1996). However to our knowledge SSRs DNA marker has + not yet been served as a genetic marker in the natural populations of wild soybean (Glycine + soja Sieb. & Zucc.). The salt tolerance efficiencies of wild soybean individuals were evaluated + by using the method in our previous work (Hu and Wang 1997; Wang et al. 1997) and several RAPD + markers were found to be linked to the salt tolerance character of wild soybean (Zhang et al. + 1999). In present paper we evaluated the applicability of SSRs as a source of genetic markers + in salt resistance of wild soybean in two natural populations in saline conditions." + file: "Genetic_Variation_in_Wild_Soybean_Glycine_soja_Populations_Revealed_with_SSR_Markers.pdf" + +- title: "Further Study on Genotypic Variation of Salt Tolerance to Wild Soybean (Glycine soja Sieb. & Zucc.)" + authors: "Yu Bin Li, Zhi Ang Hu (Author for Correspondence) and Hong Xin Wang" + abstract: " Soil salinity has a major impact on plant growth and affects about 6% of the total global land + area (Flowers and Yeo 1995). The development of salt tolerant crops including soybean could + greatly help to meet demands on the food supply. The wild perennial Glycine species have been + suggested as a potential source of germplasm to improve soybean for agronomic traits including + salt tolerance (Brown et al 1984;Pantalone & Kenworthy 1989). It is well known that the annual + wild soybean Glycine soja Sieb. & Zucc. is the unique close relative of cultivated soybean and + has been effectively used in soybean breeding. Hu and Wang (1997) first reported the variation + of salt tolerance of each plant in natural populations of Glycine soja by using a new method + for evaluating salt tolerance efficiencies (STEs) of individual plants based on the timing of + the leaf injury. In their experiments however continuous illumination and a constant + temperature(21oC) were maintained and only the seedlings were tested. The present work further + evaluates the salt tolerance of wild soybean in two saline populations under different + temperature schedules and developmental stages in order to elucidate salt tolerance of Glycine + Soja in the real and natural situation." + file: "Further_Study_on_Genotypic_Variation_of_Salt_Tolerance_to_Wild_Soybean_Glycine_soja.pdf" + +- title: "Genetic Analysis of a Root Fluorescence Mutant from Yunnan Province China" + authors: "Pinar Cubukcu1, Soon-Suk Kang2, and Reid G. Palmer2" + abstract: " Fluorescence of soybean roots under ultraviolet light was used in Europe to distinguish cultivars + (Chmelar 1934; Chmelar and Mostovoj 1934). Delannay and Palmer (1982) and Sawada and Palmer + (1987) identified four recessive loci fr1 fr2 fr4 and fr5 and one dominant locus Fr3 that + condition nonfluorescent roots in soybean." + file: "Genetic_Analysis_of_a_Root_Fluorescence_Mutant_from_Yunnan_Province_China.pdf" + +- title: "Changes of Proline Levels and Abscisic Acid Content in Tolerant/Sensitive Cultivars of Soybean under Osmotic Conditions" + authors: "Zheng Yi-Zhi and Li Tian" + abstract: " In responses to drought and salinity stresses many plant species including soybean accumulated + high levels of proline (Pro) which is thought to function in stress adaptation [1]. Also + abscisic acid (ABA) plays an important role in the responses of plants to drought stress. It + appears that drought stress triggers the production of endogenous ABA which in turn induced the + transcription of several genes. These genes are also thought to function in the protection of + cells from dehydration [2]. Here changes of free proline levels and endogenous ABA content in + seedling leaves of different soybean cultivars were detected showing a correlation of biotypes + having elevated levels of proline and ABA content with enhanced tolerance to PEG stress." + file: "Changes_of_Proline_Levels_and_Abscisic_Acid_Content_in_Tolerant_Sensitive_Cultivars_of_Soybean_under_Osmotic_Conditions.pdf" + +- title: "Cloning and Characterization of a Molecular Marker Associrance from Soybean Cultivarsated with Salt Tole" + authors: "Zhang Qin, Yun Rui, Hu Zhiang, Zhong Min, Deng Xin" + abstract: " Much progress has been made towards elucidating the underlying mechanisms controlling salt + tolerance in plant (M. R. Foolad et al., 1997; H. Pakniyat et al., 1997). These studies led to + the analysis and isolation of genes that encode proteins related to salt tolerance. In previous + study, we applied DAF (DNA Amplification Fingerprinting) to screen two salt-tolerant soybean + cultivars (Morgan and Wenfeng No.7) and two salt-sensitive ones (Hark and Jackson) and found + three polymorphic markers (8.6f/350bp, 8-27/240bp and 8-15/215bp) which only appeared in + salt-tolerant cultivars (Zhong et al., 1997). In the present work, we describe the cloning and + characterization of the specific marker 8-27/240bp in order to further study whether it plays + an important role in salt tolerance of soybean." + file: "Cloning_and_Characterization_of_a_Molecular_Marker_Associrance_from_Soybean_Cultivarsated_with_Salt_Tolerance.pdf" + +- title: "Gene Expression of Soybean Calli Culture Affected by Auxinoids with Various Chemical Structure" + authors: "Elena Hlinkov' and Claudia Ruzickov'" + abstract: " Haberlandt's hypothesis (Haberlandt 1902) about totipotency of living plant cells meant a shift + from a level of the hypothesis into a reality in the beginning of 60's when cultivation media + for somatic cells of tobacco and carrot were prepared (Skoog et Miller 1957). Callus induction + can be induced practically on all plant explants. Differences in a rate of cell conversion into + a dedifferentiation are conditioned with the chemical structure of used exogenous growth + regulators an ontogenetic stage of explant and concentration gradient between exogenous and + endogenous growth regulators..." + file: "Gene_Expression_of_Soybean_Calli_Culture_Affected_by_Auxinoids_with_Various_Chemical_Structure.pdf" + +- title: "Variations for Biomass, Economic Yield and Harvest Index among Soybean Cultivars of Maturity Groups III and IV in Argentina" + authors: "M.E. Weilenmann de Tau (etau@balcarce.inta.gov.ar) and J. Lüquez" + abstract: " In the southern pampeana region of Argentine, south of the parallel 36° Latitude S, soybean + (Glycine max (L.) Merr.) crop is grown on approximately 200.000 hectares with further expansion + expected. Cultivars of maturity Groups III and IV are well adapted to this zone. Identify plant + traits that contribute to crop productivity is essential for developing high yielding cultivars + (Salman and Brinkman, 1992). Harvest index (HI), defined as ratio between economic yield (EY) + and the total biomass i.e biological yield (BY), influences EY more than any other yield + determining plant trait (Bhardwaj and Bhagsari, 1989). Donald and Hamblin (1976) have reviewed + the history of the concept of HI and concluded that it may be used as a criterion for yield + evaluations. Soybean economic yield was reported to be correlated with HI (Bhardwaj and + Bhagsari, 1989). Cultivars with high HI should be combined with cultivars having high biomass + to increase yield (McVetty and Evans, 1980). The values of HI in soybean (Glycine max (L.) + Merrill) range between 0.47 and 0.56, with absence of water stress (Hume et al.,1989). + Twenty-one soybean genotypes of maturity group IV and six of maturity group III were evaluated + under two different conditions of humidity with the following objectives: a) determine + variability for EY, BY and HI among soybean cultivars, b) identify genotypes having high BY, EY + and HI and c) determine the associations between BY and HI with EY in order to enhance soybean + grain yields combining superior genotypes for BY and HI." + file: "Variations_for_Biomass_Economic_Yield_and_Harvest_Index_among_Soybean_Cultivars_of_Maturity_Groups_III_and_IV_in_Argentina.pdf" + +- title: "Inheritance of Genes Controlling Photoperiod Insensitivity and Flowering Time in Soybean" + authors: "I. M. Tasma1, L. L. Lorenzen2, D. E. Green1, and R. C. Shoemaker1,3" + abstract: " The objective of this research was to study the inheritance of genes controlling photoperiod + insensitivity and flowering time in soybean. Two single-cross populations, IX132 (PI 317.336 X + 'Corsoy'), and IX136 (PI 317.334B X 'Corsoy') were developed for this purpose. The populations + were inbred to obtain 101 and 100 F6:7 lines, respectively, using a modified single seed + descent. Flowering time (days to R1) of the RI lines from each population was observed in the + growth chamber at 12 h and 20 h photoperiods using fluorescent and incandescent lamps. Results + show that the RI lines have dramatically different responses to day length. A normal + distribution of flowering times was observed when the lines were grown in growth chamber with + 12 h photoperiod. When the lines were grown in growth chamber with 20 h photoperiod, however, a + discontinuous distribution was observed. This suggested that the insensitivity of the RI lines + on long day length may be controlled by few major genes. The time of flowering was delayed in + almost all lines when grown in growth chamber with 20 h photoperiod compared to those grown in + the growth chamber with 12 h photoperiod. The flowering delays were 5 to 75 days in population + IX132 and 0 to 75 days in population IX136. Chi-square tests show that the segregation data fit + a 1:6:1 ratio in population IX132 and IX136. Based on these tests a minimum of three genes are + proposed to control photoperiod insensitivity in both populations." + file: "Inheritance_of_Genes_Controlling_Photoperiod_Insensitivity_and_Flowering_Time_in_Soybean.pdf" + +- title: "Integrated physical mapping of the soybean genome: A tool for rapid identification of economically important genes." + authors: "Kimbely Zobrist 1, Khalid Meksem 1, Chengcang Wu 2, Quanzhou Tao2, Hongbin Zhang 2, David A. Lightfoot 1 " + abstract: " Investment in crop genomic science is justified by the existence of genus, species and cultivar + specific genes with no known function. A subgroup, within this group of genes, is expected to + be genes of agronomic and economic importance such as disease resistance genes, major yield + determinates and genes that produce specific chemicals and components. Identification of + members of the economically important gene subgroup has been painstakingly slow by conventional + genetics and preliminary genomics.
A microsattelite marker map, with about 600 mapped + markers, is available in soybean. This anchored genetic map has been integrated with RFLP, + RAPD, and AFLP marker maps (Shoemaker and Specht 1995; Mansur et al. 1996; Keim et al., 1996; + Chang et al., 1997 Cregan et al., 1999). About 300 QTL conditioning traits of agronomic + importance have been identified by about 15 groups over the last 10 years (Imsande et al., + 1998; Soybase http://probe.nalusda.gov:8300). However, it is not feasible to fine-map and + isolate large numbers of soybean genes by this technology." + file: "Integrated_physical_mapping_of_the_soybean_genome_A_tool_for_rapid_identification_of_economically_important_genes.pdf" + +- title: "Construction and Characterization of a BAC Library for the Soybean Cultivar A3244" + authors: "J.P. Tomkins, D.A. Frisch, J.R. Byrum and R.A.. Wing" + abstract: " The construction of a physical framework for the soybean genome requires the use of large insert + genomic libraries. The bacterial artificial chromosome (BAC) cloning system appears to offer + advantages over other large insert cloning systems as discussed previously (Shizuya et al., + 1992; Woo et al., 1994). Therefore, the BAC system is very appealing as a vehicle for advanced + genome analysis in soybean. At the present time, the construction of three soybean BAC + libraries has been reported in the literature (Marek and Shoemaker, 1997; Danesh et al., 1998; + Tomkins et al., 1999). Estimated coverage for these libraries range between 3 and 9 haploid + genome equivalents. In order to develop a comprehensive physical framework for soybean using + fingerprinting (Marra et al, 1997) and BAC end sequencing technologies, a deeper coverage BAC + library providing at least 10 genome equivalents will be required. Our objective was to develop + a deep coverage soybean BAC library for the purpose of creating a comprehensive physical + framework of the soybean genome." + file: "Construction_and_Characterization_of_a_BAC_Library_for_the_Soybean_Cultivar_A3244.pdf" + +- title: "Agronomic traits correlative analysis between interspecific and intraspecific soybean crosses" + authors: "Qi Yang & Jinling Wang" + abstract: " Two semicultivated (G.gracilis) and four cultivated (G.max) cultivars were used to make 15 + crosses and the resulting F1 and F2 progenies were evaluated for morphological yield and + quality characters. The relationship among agronomic characters between intraspecific and + interspecific soybean crosses was analyzed. The objective of this study was to compare the + difference among agronomic characters between intraspecific and interspecific soybean crosses. + Plants derived from crosses involving G.gracilis were taller more vigorous had greater seed and + pod number /plant lower seed-stem ratio and smaller 100-seed weight than those from + intraspecific crosses. In interspecific crosses taller and more vigorous plants had close + association with lower seed-stem ratio. The correlations of 100-seeds weight with the duration + of developing stage were in the opposite direction to those with seed and pod number/plant. The + correlation of protein content with developing stage were in the opposite direction to that of + oil content. It is suggested that it was difficulty to select plants both higher in protein and + in oil content derived from interspecific crosses." + file: "Agronomic_traits_correlative_analysis_between_interspecific_and_intraspecific_soybean_crosses.pdf" + +- title: "Field Resistance to Sudden Death Syndrome is effective at low Inoculum Concentration in Greenhouse Assays" + authors: "V.N. Njiti, J.E. Johnson, G.A. Torto and D.A. Lightfoot." + abstract: " Effective selection of field resistance to soybean (Glycine max (L.) merr.) sudden death syndrome + (SDS) measured by leaf scorch requires multiple environments. Current greenhouse assays reduce + GxE but fail to predict field resistance. Our objective was to develop a greenhouse assay with + a low GxE that improved selection of field resistance to SDS among soybeans. Recombinant inbred + lines were evaluated for scorch severity (DS) at three inoculum rates in two experiments and + for root infection at one inoculum rate in one experiment. Cultivars were compared using DS + from one experiment at one inoculum rate. The heritability of DS among recombinant inbred lines + in the greenhouse was 63% at the low 35% at the moderate and 34% at the high inoculum rates. + Reduced inoculum rates in the greenhouse (<5000 spores cm3 of soil) provided DS values that + significantly correlated with field leaf scorch. The number of lines potentially resistant to + SDS within a segregating population could be reduced by 57% using a F. solani inoculum rates of + 3,500 - 5,000 spores per cm3 of soil and greenhouse DS <1.9 for selection. About 10% of field + resistant lines were eliminated by error. Among unrelated soybean cultivars the low inoculum + rate separated genotypes (P <0.05) and their greenhouse DS significantly correlated with field + DS (r =0.9) and disease index (r =0.86). Therefore the method is an effective tool for + inheritance studies and cultivar trials." + file: "Field_Resistance_to_Sudden_Death_Syndrome_is_effective_at_low_Inoculum_Concentration_in_Greenhouse_Assays.pdf" + +- title: "Inheritance of a five leaflet character arising from wild soybean (Glycine soja Sieb. et Zucc.) in soybeans (G. max (L.) Merr.)" + authors: "Wang Ke-Jing wangkejing@ihw.com.cn, Li Fu-Shan, Zhou Tao and Xu Zhan-You" + abstract: " The inheritance of a five leaflet mutation of soybeans originally inherited from the wild was + studied using cross analysis. Six crosses were made between Five Leaf Bean with the five + leaflet trait and other 6 lines of normal leaves. F2 plants of 5 crosses produced major three + five leaflet leaves and also some minor four six and seven multifoliolate leaves. There were + two kinds of segregation ratios for major five leaflet (including other multifoliolate leaves) + and trifoliolate characters in the F2 progeny plants. Five crosses showed a goodness of fit to + a 3 : 1 ratio and one cross showed a satisfactory 63 : 1 ratio. The cross analysis indicated + that besides the Lf1 gene controlling the five leaflet trait other two newly found genes could + also control this trait. These three genes were independently genetic incompletely dominant and + effect-duplicated. The results also suggested that the Five Leaf Bean a donor of five leaflet + genes acquired by random selection to a cross progenies ((cultivar1 x wild soybean) x + cultivar2) had heterogeneous genotypes at the three loci among individuals." + file: "Inheritance_of_a_five_leaflet_character_arising_from_wild_soybean_Glycine_soja_Sieb_et_Zucc_in_soybeans_G_max_L_Merr.pdf" + diff --git a/_data/sgn/sgn_2000/minutes.yml b/_data/sgn/sgn_2000/minutes.yml new file mode 100644 index 00000000..09c32050 --- /dev/null +++ b/_data/sgn/sgn_2000/minutes.yml @@ -0,0 +1,43 @@ +--- +- year: 2000 + document: "The Soybean Genetics Committee met from 7:00 to 8:00 p.m., February 21, 20000, at the Sheraton West + Port Hotel in St. Louis, Missouri, in conjunction with the Soybean Breeders Workshop. Prakash + Arelli called the meeting to order.
Committee members attending the meeting were; P. R. + Arelli, G. R. Buss, E. R. Cober, P. B. Cregan, B. W. Diers, R. J. Fioritto, D. G. Lohnes, R. L. + Nelson and T. W. Pfeiffer. C. Sneller and G. A. Graef both are recently elected by mail ballot + to serve a three-year term. But G. Graef has declined to serve on the committee and D. Grant + was elected during the meeting to replace G. Graef. At the conclusion of the meeting G. Buss + was elected to succeed P. Arelli for the year ending in February 2001.
Also, in attendance + at the meeting were Rich Wilson, R. D. Bernard, J. G. Burgon and Istavan Rajcan. Current + committee members and the February expiration date for their terms on the committee + include:
G.R. Buss (2002) Chair gbuss@vt.edu
E.R. Cober (2002) Coberer@em.agr.ca +
P.B. Cregan (2001) pcregan@nal.usda.gov
R.J. Fioritto (ex officio) fioritto.1@osu.edu +
D. Grant (2003) dgrant@iastate.edu
D.G. Lohnes (ex officio) lohnes.2@osu.edu
R.L. + Nelson (ex officio) rnelson@uiuc.edu
T.W. Pfeiffer (2001) tpfeiffe@ca.uky.edu
C. + Sneller (2003) csneller@comp.uark.edu
Procedure: As in the past, manuscripts concerning + genetics interpretation, gene symbols, and linkages should be sent to the chair of the Soybean + Genetics Committee for review. To facilitate the review process, the committee will proceed as + follows:
1. The review will only be for 'validity of the genetic interpretations' and + 'appropriateness of gene symbol.'
2. Reviewers of manuscripts will be given a deadline of + forty-five days to return the reviewed manuscript to the chair. If the authors have not + received a reply within sixty-days of submission, they should contact the + chair.
Assignment/Approval of Gene Symbols: If gene symbols are being assigned where the + material is from induced mutants, variants from heterogeneous populations, or from transgenic + changes, then the authors should deposit representative sample of the genetic material in the + Genetic Type Collection with Dr. R. L. Nelson, Curator.
Gene symbols will be approved only + in cases where the relevant material is available in soybean germplasm collections for + distribution to researchers. If the material is not made available, a symbol is not + necessary.
Summaries for the past year: A list of soybean gene symbols approved during the + year March 1999 through February 2000 include the following:
1. On January 1, 2000, + committee concurred with the conclusion of Glenn Buss, et al. that resistance to soybean mosaic + virus from cv.Raiden is controlled by a single dominant gene that is allelic to Rsv1.
2. On + September 17, 1999, the committee agreed with the interpretations and conclusions as provided + by Walter Fehr's group that they developed a new. mutant allele fan3 for reduced linolenate + that is not at the fan1 or fan2 locus.
3. On May 6, 1999 based on the review of the soybean + genetics committee it was agreed with the interpretation by Walter Fehr's group that A25 has an + allele fap6 for evaluated palmitate which is at a locus other than fap1fap2, fap3 and + fap4.
4. On July 6, 1999, the committee concluded that it was not required to review the + assignment of Y18 in Ames 2 by Reid Palmer etal., when it was already assigned previously. + (Required by the USDA).
Arelli thanks the fellow committee members for their methodical + review process and timely return to him with their conclusions. There were no complaints by any + of the authors except one author who was a bit impatient and somewhat sarcastic." diff --git a/_data/sgn/sgn_2001/issue.yml b/_data/sgn/sgn_2001/issue.yml new file mode 100644 index 00000000..8bf03730 --- /dev/null +++ b/_data/sgn/sgn_2001/issue.yml @@ -0,0 +1,41 @@ +--- +- title: "Integrated physical mapping of the soybean genome: A tool for rapid" + authors: "Jeffry Shultz 1, Chad LaMontagne 1 Kimbely Zobrist 1, Khalid Meksem 1, Chengcang Wu2, Quanzhou Tao2, Padmavathi Nimmakayala 2, Filip Santos 2, Hongbin Zhang 2, David A. Lightfoot 1" + abstract: " The complex genomes of crops like soybean are rich in highly repeated sequences (55%) that block + chromosome walking from linked DNA markers to target genes (Danesh et al., 1998) and confound + shotgun approaches to complete genome sequencing (Boysen et al., 1999). In addition, much of + the rest of the soybean genome is moderately repeated (25%) or unique but duplicated in two + homeologous loci (20%)(Grant et al., 2000). Success of map-based cloning in crop plants depends + on the target
gene being localized to such a short genetic interval (0.01-0.1 cM) that the + markers and target gene are separated from regions rich in repeated sequences (Meksem et al., + 2000; 2001). Fine mapping to this degree can be accomplished 10-50 fold more efficiently with a + physical map that encompasses the whole genome than by marker saturation and chromosome walking + or landing (Zhang and Wing, 1997; Meksem et al., 2001a)." + file: "SGN2002Shultzetal.pdf" + +- title: "Users Guide to the Soybean Physical Map at the Website http://hbz.tamu.edu/." + authors: "Jeffry Shultz 1, David A. Lightfoot 1" + abstract: " To develop the physical map of soybean, we have developed three large-insert soybean DNA + libraries from 'Forrest' (Meksem et al., 2000). Texas A&M has generated restriction enzyme + fragment fingerprints for 90,000 of 112,600 clones. About 50,000 clone fingerprints have been + posted at at Physical Mapping sections of http://hbz.tamu.edu/. Each clone was tested for the + content of known genetic markers and some ESTs (Wu et al., 2001) and SNPs (Zobrist et al., + 2000; Meksem et al., 2001; Shultz et al., 2001). We have shown that fingerprints of BACs from + other cultivars can be integrated with this data set (Shultz et al., 2001). The integrated + genetic and physical map will inexpensively and rapidly enable identification of a number of + genes underlying QTL of economic importance. Here we report methods of use for the genetic and + physical map. This guide should allow soybean researchers to use the website at which data can + be retrieved, clones submitted for fingerprinting and clones requested." + file: "SGN2002ShultzLightfoot.pdf" + +- title: "Selection Limits - How Close Are We?" + authors: "S.K. St. Martin" + abstract: " Theoretical and empirical studies of selection limits have provided a way to use estimates of + genetic gain and effective population size to calculate the plateau (selection limit) beyond + which further gains are impossible. Literature pertinent to genetic gain for soybean yield in + North America was surveyed for this purpose. Most results indicate that the highest-yielding + existing cultivars are far from the calculated selection limit. Selection limits are not an + imminent threat to North American soybean breeders, but this does not imply that efforts to + broaden the germplasm base are wasted." + file: "Selection_Limits_How_Close_Are_We.pdf" + diff --git a/_data/sgn/sgn_2001/minutes.yml b/_data/sgn/sgn_2001/minutes.yml new file mode 100644 index 00000000..42427666 --- /dev/null +++ b/_data/sgn/sgn_2001/minutes.yml @@ -0,0 +1,38 @@ +--- +- year: 2001 + document: "The Soybean Genetics Committee met from 7:00 to 8:00 p.m., February 19, 2001, at the Sheraton West + Port Hotel, St. Louis, Mo., in conjunction with the Soybean Breeders Workshop. Glenn Buss + called the meeting to order.
Committee members in attendance were G. Buss, E. Cober, P. + Cregan, R. Fioritto, D. Grant, D. Lohnes, and R. Nelson. Also in attendance were Prakash + Arelli, Terry Coffelt, Vainu Poysa, and Brian Sterling. The terms of Perry Cregan and Todd + Pfeiffer are expiring this year and Clay Sneller has resigned because he is accepting a + position in wheat breeding. New members elected to fill the expired terms were Brian Diers and + Jim Orf. John Tamulonis was elected to serve the remaining two years of Clay Sneller's term. + Current committee members and the February expiration date of their terms include:
G.R. Buss + (2002) gbuss@vt.edu
E.R. Cober (2002) Coberer@em.agr.ca
D.Grant (2003) + dgrant@iastate.edu
J. Tamulonis (2003) john.p.tamulonis@monsanto.com
B.Diers (2004) + bdiers@uiuc.edu
J.H Orf (2004) orfxx001@maroon.tc.umn.edu
R.J. Fioritto (ex officio) + fioritto.1@osu.edu
D.G. Lohnes (ex officio) lohnes.2@osu.edu
R.L. Nelson (ex officio) + rnelson@uiuc.edu
David Lohnes provided some statistical data on usage of the Soybean + Genetics newsletter website for 2000. The average number of unique visitors to the site each + month was 820 with 1247 total visits and 2029 visits to individual articles per month. So + visits were very high, but number of articles submitted was very small compared to the number + received before we went to electronic publishing. This could be due to lack of a deadline. The + committee decided to set deadlines of Feb. 1 and Aug. 1. New articles will only be put up on + the site on those dates. Reminders will be sent out to everyone on the current email + list.
David Lohnes has tried to generate financial support for the website, but has been + unsuccessful so far. Suggestions would be appreciated.
One of the major functions of the + Soybean Genetics Committee is to review manuscripts describing new genes for proper use of + nomenclature and to review supporting data. Only one manuscript was reviewed this year - the + gene symbol Rsv1-h (from Hwang Kum Kong) was assigned to the gene in Suweon 97 for resistance + to SMV (Chen et al).
The subject of gene nomenclature, especially as applied to molecular + markers, was discussed. The current system is apparently unworkable in Soybase because it is + based on the restriction enzyme used rather than a specific genetic locus. Also, authors have + not been consistent. The committee will be discussing this over the coming year and will put an + article on the website inviting comment from all soybean geneticists
We will also put an + appeal on the website for all reviewers of manuscripts for various journals to recommend that + the Soybean Genetics Committee review new gene symbols as a prerequisite to publication. + Hopefully, this will help the Soybean Genetics Committee do its job and should lead toward a + more consistent nomenclature, especially for molecular markers.
Elroy Cober was elected + chairman of the committee for the coming year. Manuscripts for committee review should be sent + to him." diff --git a/_data/sgn/sgn_2002/issue.yml b/_data/sgn/sgn_2002/issue.yml new file mode 100644 index 00000000..ac73c5c5 --- /dev/null +++ b/_data/sgn/sgn_2002/issue.yml @@ -0,0 +1,29 @@ +--- +- title: "Database and information retrieval system for soybean varieties" + authors: "Savita Kolhe*, Kavita Mundankar, C.Tara Satyavathi, P.G. Karmakar and S.P. Tiwari" + abstract: " A software package (VIS) on varietal Information for Soybean has been developed in MSACCESS 97. + This package provides detailed information on 35 different morphological characters of all the + released/notified varieties of soybean in India. The information is retrieved in the form of + comparison tables, colorful pictures and reports in a quick, easy and efficient manner with + minimal keyboard intervention as per different users' needs." + file: "paper.pdf" + +- title: "Soybean Transformation via the Pollen Tube Pathway" + authors: "Zenglu Li1,2, Randall L. Nelson1,3, Jack M. Widholm1, and Andrew Bent1,4" + abstract: " The pollen tube pathway method of transformation has been reported to be successful in several + crops including soybean. DNA can be transferred by cutting the stigma following
pollination + and applying the DNA solution on the severed style. DNA presumably reaches the ovary by flowing + down the pollen tube and then integrates into the just fertilized but undivided zygotic cells. + To provide the molecular evidence for this procedure, the plasmids pBI221 carrying a CaMV35S + promoter-beta glucuronidase (gus) gene-nos terminator gene fusion construct and pBI0122 + carrying a CaMV35S promoter-bar-g73' terminator gene fusion construct were used. Approximately + 5000 seeds were produced from the flowers treated with DNA. None of the seeds from the plants + treated with DNA containing the bar gene were found to be as resistant as the positive control. + Morphological variation was observed in some plants, but this was not observed in the following + generation. Approximately 2% of the seeds from plants treated with DNA containing the gus gene + had a positive reaction in the GUS assay, however, no GUS activity was observed in the plant + leaves from those seeds. Less than 3% of progeny seeds tested expressed a positive reaction and + polymerase chain reaction (PCR) with seedling DNA did not detect the gus gene. Thus, we were + unable to confirm the positive results of others when we used screenable marker genes." + file: "TransSGN.pdf" + diff --git a/_data/sgn/sgn_2002/minutes.yml b/_data/sgn/sgn_2002/minutes.yml new file mode 100644 index 00000000..832022dd --- /dev/null +++ b/_data/sgn/sgn_2002/minutes.yml @@ -0,0 +1,31 @@ +--- +- year: 2002 + document: "The Soybean Genetics Committee met from 7:00 to 8:00 p.m., February 18, 2002, at the Sheraton West + Port Hotel, St. Louis, MO, in conjunction with the Soybean Breeders Workshop. Elroy Cober + called the meeting to order
Committee members in attendance were G. Buss, E. Cober, B. + Diers, J. Orf, R. Fioritto, D. Grant, D. Lohnes, and R. Nelson. Also in attendance were Vaino + Poysa, Pengyin Chen, and Prakash Arelli. The terms of Elroy Cober and Glenn Buss are expiring + this year. New members elected to fill the expired terms were Vaino Poysa and Pengyin Chen. + Current committee members and the February expiration date of their terms include:
D.Grant + (2003) dgrant@iastate.edu
J. Tamulonis (2003) john.p.tamulonis@monsanto.com
B.Diers + (2004) bdiers@uiuc.edu
J.H. Orf (2004) orfxx001@maroon.tc.umn.edu
V. Poysa (2005) + poysav@em.arg.ca
P. Chen (2005) pchen@uark.edu
R.J. Fioritto (ex officio) + fioritto.1@osu.edu
D.G. Lohnes (ex officio) lohnes.2@osu.edu
R.L. Nelson (ex officio) + rnelson@uiuc.edu
A discussion of gene nomenclature, especially as applied to molecular + markers, was led by David Grant. The current system is apparently unworkable in Soybase because + it is based on the restriction enzyme used or allele information rather than a specific genetic + locus. David Grant will develop a proposal for naming molecular marker loci and circulate it + within the community.
One of the major functions of the Soybean Genetics Committee is to + review manuscripts describing new genes for proper use of nomenclature and to review supporting + data. Only one manuscript was reviewed this year - the gene symbol Rsv4 was assigned to the + gene in PI 88788 for resistance to SMV (Gunduz et al.).
The Soybean Genetics Newsletter will + not be editing articles for style, nor will they have links added. Authors will be encouraged + to markup their articles and instructions will be provided for this purpose.
A motion + (Diers/Orf) was carried which reinstates the requirement to ask for authors permission + before citing articles in the Soybean Genetics Newsletter. Beginning in 1997 the policy had + been changed to:
Data presented in the Soybean Genetics Newsletter may be used in + publications without the consent of the respective authors unless a statement precluding use of + the data accompanies the article.
We will revert to the pre-1997 statement:
Data + presented in the Soybean Genetics Newsletter are not to be used in publications without the + consent of the respective authors.
Brian Diers was elected chairman of the committee for the + coming year. Manuscripts for committee review should be sent to him." diff --git a/_data/sgn/sgn_2003/issue.yml b/_data/sgn/sgn_2003/issue.yml new file mode 100644 index 00000000..e5530317 --- /dev/null +++ b/_data/sgn/sgn_2003/issue.yml @@ -0,0 +1,43 @@ +--- +- title: "Field evaluation and genetic variation of some novel soybean cyst nematode resistance sources" + authors: "J. R. Gelin1 and P.R. Arelli2" + abstract: " The soybean cultivars currently used in the US have very low genetic diversity because they + derived from a limited number of plant introductions (PI) (Lorrenzen and Shoemaker, 1994; + Shoemaker, 1994). Soybean PIs come from Asia, and have historically been used either directly + as varieties after evaluation or as sources of desirable genes for soybean breeding programs + (Caviness, 1992). They have also been used in the US as sources of resistance to important + diseases including Soybean Cyst Nematode (SCN), caused by Heterodera glycines Ichinohe, and + Soybean Sudden Death Syndrome (SDS), caused by Fusarium solani (Mart.) Sacc. f. sp. phaseoli + (Burk.) Snyd. & Hans., type A (Fehr, 1993; Palmer et al., 1996; Rao-Arelli, 1994; Rao-Arelli et + al., 1992). These two infectious diseases often occur jointly in the field, resulting in + important yield losses.
Generally, the PIs used in soybean breeding programs as sources of + resistance against SCN have a black seed coat, poor agronomic performance, and are also very + susceptible to SDS in the field (Gibson et al., 1994; Gelin, 1996). Breeders are in search for + new sources of SCN resistance in order to expand the genetic diversity of SCN resistance and at + the same time to develop cultivars with combined resistance to both diseases.
In this + research, 31 new SCN-3 resistant plant introductions (P. R. Arelli, personal communication) + were evaluated at two different locations in Southern Illinois in 1995, along with 11 + previously used SCN resistance sources and 40 cultivars used as controls. The objectives of the + study were: (i) to evaluate the agronomic performance of the new PI lines for flower color, + flowering date, harvest maturity, yield and seed quality; (ii) to estimate their SDS response + in the field; and (iii) to assess their genetic variation with the use of two simple sequence + repeats (SSR) DNA markers." + file: "Article_on_New_Soybean_PI_Lines.pdf" + +- title: "Assignment of the E4 locus to Soybean Classical Linkage Group 4" + authors: "J. Abe1, O. K. Han2, K. Komatsu1, and Y. Shimamoto1" + abstract: " Most soybean cultivars have a short-day requirement for floral induction, in which flowering is + normally suppressed under long daylength conditions. Insensitivity of flowering to long + daylength is thus an important character in order to develop cultivars adapted to the long + daylength of high latitude regions. The present study was conducted to identify and map the + maturity gene controlling insensitivity of flowering to incandescent long daylength (ILD) found + in an early-maturing cultivar from Hokkaido, Japan. A cross was made between the ILDinsensitive + cultivar, 'Ohyachi 2' (e3e3e4e4), and the ILD-sensitive line, 'Harosoy-e3' (e3e3E4E4). F2 + segregation data indicated an involvement of a single recessive gene (e4) in the ILD + insensitivity of 'Ohyachi 2', and a recombination value of 14.9 ± 3.1 % was estimated + between the gene and Enp endopeptidase isozyme) located on linkage group 4. The present study + thus confirmed that the maturity gene for the ILD insensitivity of 'Ohyachi 2' is a recessive + allele (e4) at the E4 locus, which is located on classical linkage group 4. The order is E4, + Enp, Ln (narrow leaflet)." + file: "Abe1.pdf" + diff --git a/_data/sgn/sgn_2003/minutes.yml b/_data/sgn/sgn_2003/minutes.yml new file mode 100644 index 00000000..64d01345 --- /dev/null +++ b/_data/sgn/sgn_2003/minutes.yml @@ -0,0 +1,50 @@ +--- +- year: 2003 + document: "Soybean Genetics Committee Report 2003 Minutes
The Soybean Genetics Committee met from 7:00 to + 8:00 p.m., February 17, 2003, at the Sheraton West Port Hotel, St. Louis, MO, in conjunction + with the Soybean Breeders' Workshop.
Brian Diers called the meeting to order.
Committee + members in attendance were D. Grant, B. Diers, J. Orf, V. Poysa, P. Chen, R. Fioritto, D. + Lohnes, and R. Nelson. The terms of D. Grant and J. Tamulonis expired this year. J. Tamulonis + was reelected to the committee and D. Grant moved to a ex officio position on the committee. D. + Grant's elected position on the committee was filled by P. Arelli. Nominated by B.Diers, + P.Arelli was unanimously elected as the incoming chair of the committee.
The following were + members of the Soybean Genetics Committee in 2002.
B. Diers (2004) bdiers@uiuc.edu
J. H. + Orf (2004) orfxx001@maroon.tc.umn.edu
V. Poysa (2005) poysav@em.agr.ca
P. Chen (2005) + pchen@uark.edu
J. Tamulonis (2006) john.p.tamulonis@monsanto.com
P. Arelli (2006) + parelli@msa-stoneville.ars.usda.gov
R. Fioritto (ex officio) fioritto.1@osu.edu
D. Lohnes + (ex officio) lohnes.2@osu.edu
R. Nelson (ex officio) rlnelson@uiuc.edu
R. Palmer (ex + officio) rpalmer@iastate.edu
D. Grant (ex officio) dgrant@iastate.edu
A major function of + the Soybean Genetics Committee is to review manuscripts describing new genes for proper use of + nomenclature and to review supporting data. In addition, the committee
reviews manuscripts + that describe additions or changes to classical linkage groups. During the year, the committee + made decisions on the genetic interpretations for seven manuscripts and there is one final + manuscript that is still under review. The following manuscripts were reviewed:
K.D. + Burnham, A.E. Dorrance, D.M. Francis, R.J. Fioritto, and S.K. St. Martin. Rps8, A new locus in + soybean for resistance to Phytophthora sojae.
Decision by the committee: Approved gene + designation Rps8.
A.A. Mahama and R.G. Palmer. Genetic linkage in soybean: classical genetic + linkage groups 6 and 8, and translocation breakpoints.
Decision by the committee: Merge + classical linkage groups (CLG) 6 and 8 and drop 6.
K.K. Kato and R.G. Palmer. Genetic + identification of a female partial-sterile in soybean.
Decision by the committee: Approve + gene designations Fsp-a and Fsp-b.
K.K. Kato and R.G. Palmer. Duplicate + chlorophyll-deficient y18 loci in soybean.
Decision by the committee: Approve gene + designation Y18 (Urbana) and Y24 (Ames 1).
J. Abe, O.K. Han, K. Komatsu, and Y. Shimamoto. + Assignment of the E4 locus into soybean classical linkage group 4.
Decision by the + committee: Approve the assignment of E4 to near Enp and Ln on classical linkage group + 4.
T.E. Devine. Genetic linkage of the soybean genes Pd2 and Lf2.
Decision by the + committee: Assign this linkage to classical linkage group 16.
G. Ma, P. Chen, G.R. Buss, and + S.A. Tolin. Genetic study of a lethal necrosis to soybean mosaic virus in PI 5073389 + soybean.
Decision by the committee: Approve the gene designation Rsv1-n.
K.K. Kato, and + R.G. Palmer. Molecular mapping of four lethal ovule mutants in soybean.
Decision by the + committee: Approve the gene designations Fsp2, Fsp3, Fsp4, and Fsp5.
The main topic + discussed at the committee meeting was nomenclature for genetic loci. D. Grant prepared a + proposal for naming genetic loci, which was distributed to the committee prior to the meeting. + After a few suggested modifications were discussed, a motion was made and approved that the + committee recommends the use of the nomenclature guidelines proposed by Grant. These guidelines + will be formalized by D. Grant and reviewed again by the committee and the wider soybean + genetics research community before final approval. These new guidelines will be used for naming + new genetic loci and already named loci will not be renamed. These nomenclature guidelines will + apply only to genetic loci that do not have an identified phenotype. Loci with an identifiable + phenotype will be named using current rules. In addition, the current naming system for simple + sequence repeat markers will continue to be used.
Send all manuscripts that need to by + reviewed by the Soybean Genetics Committee to:
Dr. Prakash Arelli
USDA-ARS
605 Airways + Blvd.
West Tennessee Exp. Stn.
Jackson, TN 38331" diff --git a/_data/sgn/sgn_2004/issue.yml b/_data/sgn/sgn_2004/issue.yml new file mode 100644 index 00000000..54c093eb --- /dev/null +++ b/_data/sgn/sgn_2004/issue.yml @@ -0,0 +1,46 @@ +--- +- title: "Use of gametocide for emasculation in Soybean (Glycine max (L) Merr.)" + authors: "S K Lal*, C Devkumar (1), R L Sapra and K P Singh, Division of Genetics, Indian Agricultural Research Institute, New Delhi, 1-Division of Agriculture Chemicals, IARI, New Delhi" + abstract: " Hybridization is a tedious operation in soybean. Gametocides have been used in a number of crops + to induce male-sterility either for hybrid seed production or as a substitute for hand + emasculation. However, there is no report of use of gametocide on Soybean. Ethyl + 4'fluorooxanilate at the rate of 1000 ppm was used for inducing male -sterility. Preliminary + study shows that the pollen sterility varied from 20.03% to 55.55% in the treated samples as + compared to 1.37% to 2.63% in the control. The effectiveness of the gametocide can be improved + by increasing the quantity of the gametocide used or by spraying at an appropriate stage. Even + with 50% sterility it can be successfully used in combination with a dominant morphological + marker for emasculation." + file: "gametocide.pdf" + +- title: "Induced Variation in Quantitative Traits due to Physical (gamma rays), Chemical (EMS) and combined Mutagen Treatments in Soybean [Glycine max (L.)Merrill]" + authors: "Archana Patil, Taware S. P. and Raut V. M." + abstract: " Indian Soybean variety, MACS-450 has semi determinate growth habit, medium maturity and high + yield potential which is very well adapted to agro-climatic conditions of Southern India. Seeds + of this variety were exposed to various doses of Y rays, ethyl methane sulphonate and + combination of both. Observations on percentage germination, percentage leaf abnormalities, + percentage survival, days to maturity, plant height, pods per plant, seed weight per plant and + yield kg/ha were recorded on M1 generation. Likewise percentage reduction in various + quantitative characters through various treatments was also recorded. The results indicate dose + related effect of mutagenic treatments on quantitative traits. 20 to 25 Kr Y rays dose and 0.10 + to 0.20% EMS dose may be optimum to obtain maximum variations in qualitative as well as + quantitative traits in M2 population." + file: "inducedvariationinquantativetraitsduetophysica_chemi.pdf" + +- title: "Identification and sequence analysis of a RAPD marker tightly linked to the Rsv1 locus in soybean" + authors: "Z. Li , R. L. Nelson, R. L. Bernard, and Y. Peng" + abstract: " 'Williams' and three near-isogenic lines (isolines) with soybean mosaic virus (SMV) resistance + were used to identify a random amplified polymorphic DNA (RAPD) marker linked to the locus + conferring resistance to SMV. A RAPD marker was found to be present in Williams and absent in + three isolines of Williams with SMV resistance. Three F2 populations developed from the crosses + of Williams x L81-4420, Williams x L92-8151, and Marshall x Kanro were produced to verify the + linkage between the fragment and SMV resistance gene. A 1,000 base pair fragment, designated + OPN-111000, generated by the primer OPN-11 was located approximately 1.2±1.2 cM in + repulsion phase and 1.8±1.3 cM in coupling phase from Rsv1, a gene for resistance to + SMV. In a survey of other germplasm, OPN-111000 was found linked with either Rsv1 or rsv1. F3 + families derived from F2 resistant plants were used to confirm the F2 genotypes. Using this + marker, homozygous and heterozygous SMV resistant plants could be easily distinguished based on + the fragment intensity. By cloning and sequencing the fragment, the RAPD marker was converted + to a SCAR marker. This SCAR marker can be used reliably for marker-assisted selection of Rsv1 + locus, map-based cloning or further SNP marker development." + file: "SMV_SGN_color_print.pdf" + diff --git a/_data/sgn/sgn_2004/minutes.yml b/_data/sgn/sgn_2004/minutes.yml new file mode 100644 index 00000000..607ba02f --- /dev/null +++ b/_data/sgn/sgn_2004/minutes.yml @@ -0,0 +1,25 @@ +--- +- year: 2004 + document: "2004 Minutes of the Soybean Genetics Committee
The annual Soybean Genetics Committee meeting was + held on 2/21/05 in St. Louis, MO in conjunction with the Soybean Breeders Conference. The + members present include:
1. Dr. Grover Shannon (2007) Univ. of MO
2. Dr. Elroy Cober + (2007) Agriculture & Agri Food, Canada
3. Dr. Randy Nelson [Ex-officio] USDA-ARS, IL
4. + Dr. David Grant [Ex-officio] USDA-ARS, IA
5. Dr. Prakash Arelli, Chair (2006) USDA-ARS, + TN
6. Dr. John Tamulones [was not present] (2006) Monsanto, IA
The two outgoing members + were replaced by:
7. Dr. Vince Pantalone (2008) Univ. of TN
8. Dr. David Walker (2008) + Univ. of GA
Both were unanimously elected.
During the year (2004) the committee has + received two requests for cQTL designations by Dr. Brian Diers, University of Illinois, Urbana- + Champaign, IL. One was approved by the committee and the other request is still in review + process.
The committee has unanimously recommended that resources be made available to Dr. + David Grant, Curator, soybase to place all QTLs on soybase. Dr. Grant has agreed to do it and + he stated that the work commenced on this issue recently.
Soybase is contemplating a few + changes which will affect all soybean researchers. Dr. Grant would like to have your input in + this regard.
To revitalize Soybean Genetics Newsletter, it is finding a new home with Dr. + Henry Nguyen from the University of Missouri • Columbia. With regard to the rules and + regulations for submission of articles to the Soybean Genetics Newsletter Dr. Nguyen will send + an email to the soybean community soon. The committee has decided that the Newsletter will + request articles twice in a year and oversee the operation. Dr. Nguyen will provide help and + resources for the Newsletter and will act in the capacity of an editor.
After serving chair + of the committee twice Dr. Arelli has proposed name of Dr. Grover Shannon for the chair. The + motion was unanimously carried out and Dr. Shannon was elected for 2005.
The meeting was + adjourned by the outgoing chair, Dr. Prakash Arelli." diff --git a/_data/sgn/sgn_2005/issue.yml b/_data/sgn/sgn_2005/issue.yml new file mode 100644 index 00000000..c7f8f114 --- /dev/null +++ b/_data/sgn/sgn_2005/issue.yml @@ -0,0 +1,199 @@ +--- +- title: "Evaluation of the vegetable soybean seedlings production by speedling styrofoam in comparison at the traditional system" + authors: "Yokomizo, G.K. & Vello, N.A." + abstract: " Exist a soybean (Glycine max (L.) Merrill) classification in two groups in agreement with yours + principal uses: the first group, denominated grain type is employed manly in the bran and oil + production, with medium grain size (one hundred seed weight (HSW) varying among 10 to 19 g), + however have undesirable flavor; the second group is denominated food type, with flavor taste, + constituted by two subgroups, the first with HSW smaller than 10 g, consumed in the sprouts + form and natto (fermented) and the second with HSW presenting 20 g or more, being consumed + directly by human principally in the immature pod form (R6 stage from scale of Fehr & Caviness + (1977)) how snack, being denominated vegetable soybean, green soybean or edamame; presenting + also the subgroups denominated sweet soybean (kuromame) and salad soybean (Vello, 1992). +
Adequate balance between nutritional values and protein content is a important + characteristic of the soybean, which is superior than the bovine meat, cow milk and eggs, this + vegetal protein could heal the malnutrition from peoples in substitution to the animal protein + (Carrao-Panizzi, 1988), with smaller production expenses (Canto & Turatti, 1989).
The main + characteristics presented by the vegetable soybean are big seeds; sweetened flavor (similar to + the nuts); carbohydrate content high; without or smaller undesirable smell (Rackis et al., + 1979; Carrao-Panizzi, 1989; Orf, 1989; Vello, 1992) and smaller antinutritional factors + content, principally the Bowmann Birk and Kunitz anti proteases (Orf, 1989), this characters + are found in Japanese and Chinese genotypes.
Recently in Brazil appeared a crescent interest + to produce food type soybean with great seeds for exportation to eastern countries and, also to + United States and Australia. The seedling production in paper or plastic cups and styrofoam to + posterior transplant in definite local is common practice to food type soybean, in this way the + present research had as objective to evaluate the food type soybean seedling production in + styrofoam in relation at the plastic cups. Aiming at to verify if exist differences between + these systems. The comparison among evaluated materials is the second objective." + file: "mudasGilberto.pdf" + +- title: "Scott-Knott classification in two cultivation epochs from topcrosses among fodder type and grain type soybean" + authors: "Yokomizo, G.K. & Vello, N.A." + abstract: " Exist a soybean (Glycine max (L.) Merrill) classification in two groups in agreement with yours + principal uses: the first group, denominated grain type is employed manly in the bran and + oil
production, with medium grain size (one hundred seed weight (HSW) varying among 10 at 19 + g), however have undesirable flavor; the second group is denominated food type, with flavor + taste, constituted by two subgroups, the first with HSW smaller than 10 g, consumed in the + sprouts form and natto (fermented) and the second with HSW presenting 20 g or more, being + consumed directly by human principally in the immature pod form (R6 stage from the Fehr & + Caviness scale (1977)) how snack, being denominated vegetable soybean, green soybean or + edamame; presenting also the subgroups denominated sweet soybean (kuromame) and salad soybean + (Vello, 1992).
The main characteristics presented by the vegetable soybean are big seeds; + sweetened flavor (similar to the nuts); carbohydrate content high; without or smaller + undesirable smell (Rackis et al., 1979; Carrao-Panizzi, 1989; Orf, 1989; Vello, 1992) and + smaller anti-nutritional factors content, principally the Bowmann Birk and Kunitz anti + proteases (Orf, 1989), characters existent in Japanese and Chinese genotypes principally; such + genotypes have been introduced in Brazil for the improvement of the soy being sought the human + feeding, because the soybean cultivate in Brazil is from the type grain with medium size seeds + (PCS between 10 and 19 g) and flavor bitter, astringent, besides of the high lipoxigenases + tenor and anti nutritional substances presence.
Recently is appearing in Brazil a new + category of producer food type soybean with big seeds to assist at the interesting growth in + Brazil to the direct human feeding and for export for oriental
countries and, also, to the + United States and Australia.
A problem existent in the exotic genotypes is the non + adaptability to the Brazilian conditions (Santos, 1988). A possible solution is the crossing + among exotic genotypes with adapted type grain genotypes, aiming to meet in a same plant the + genes to the direct human consumption characteristics, presents in the exotic genotypes, with + the genes to tolerance at the photoperiod, high productivity and high seed physiologic quality + from the adapted genotypes. The research objective was to compare the topcrosses performance + among food type with grain type soybean by Scott-Knott classification in two environments." + file: "scottGilberto.pdf" + +- title: "Precocious germination of pollen grains in anthers of Soybean (Glycine max (L.) Merr.)" + authors: "Satwinder Kaur, Harsh Nayyar1, R.K. Bhanwra and Sanjeev Kumar" + abstract: " While examining the pollen fertility in different genotypes of soybean (Glycine max (L.) Merr.), + precocious pollen germination was noticed in all the ten anthers at bud, half-open flower and + fully-open flower stages. Genotypic variation existed for this trait and out of the six + genotypes evaluated, 'Palam soya' showed the least germination (17%) while 'Harit soya' had the + highest germination (90%) at half-open stage. At fully-opened stage, all the pollen grains + appeared to be germinated prior to their release from anthers. Stigma receptivity was + relatively more in genotypes having higher precocious pollen germination indicating a positive + correlation between the two. Some preliminary observations on this phenomenon, hitherto unknown + in soybean, are reported here that may have significant implications in soybean breeding." + file: "Nayyar.pdf" + +- title: "Screening and utilization of soybean germplasm for breeding resistance against Mungbean Yellow Mosaic Virus" + authors: "S K Lal, V K S Rana, R L Sapra and K P Singh" + abstract: " Soybean are susceptible to about fifty different viruses. Under Indian conditions Mungbean yellow + mosaic virus (MYMV), Soybean mosaic virus (SMV) and Groundnut bud necrosis virus (GBNV) are of + prime importance.
The incidence of YMV was limited to north plain zone but since last few + years it has been reported to spread to central zone as well. Central zone accounts for the 90% + of the soybean production in the country. Singh et al. (1998) in order to determine the + incidence of stem fly (Melanagromyza sojae), whitefly (Bemisia tabaci) and yellow mosaic virus, + fields of 20 villages were observed during kharif in 1996. they found that virus incidence + occurred in patches in most of the area.
Yellow seeded soybean was introduced during + nineteen sixties in India. At that time only three exotic varieties namely Bragg, Clark and + Lee, found to be suitable under Indian conditions, were available to farmers. These varieties + being highly susceptible to MYMV created general impression of a agricultural non-feasibility + of yellow seeded soybean in India. Although this problem has been over come to some extent with + the release of new varieties under All India Coordinated Research Project (AICRP) on soybean. + However, the resistance is not durable. Varieties showing field resistance at the time of + release become susceptible to MYMV over a period of time.
The problem may be because of + prevalence of different isolates of the causal virus. Biswas and Varma (2000) reported five + naturally occurring variants of mungbean yellow mosaic virus (MYMV), one from Vigna mungo (Bg3D + from Delhi), two from Vigna radiata (MbD from Delhi and MbS from Sriganganagar), one from + Phaseolus aconitifolia (MoL from Ludhiana) and one from Cajanus cajan (Pp1D from Delhi). Based + on the host reactions a set of differentials was selected, which could be used for + differentiating the five variants of MYMV. The variants of MYMV could be further distinguished + by nucleic acid spot hybridization (NASH) using full length and fragment probes to MYMV-Bg3D + DNA-A and DNA-B. The variants Pp1D and MbD reacted weakly with all the probes but these + isolates could also be differentiated by using a smaller concentration of viral DNA. Based on + the degree of hybridization the five variants appeared to fall into two distinct groups i.e. + Pp1D in one group and Bg3D, MbS and MoL in the other. Usharani et al., (2004) studied various + isolates from India on the basis of host range. Genomic components of the begomovirus causing + yellow mosaic disease (YMD) in soybean in Delhi, India, were cloned, sequenced and evaluated + for infectivity. Nucleotide sequence analysis of the virus isolate revealed more than 89% + identity with mungbean yellow mosaic India virus (MYMIV); therefore, it is designated as a + soybean isolate of MYMIV (MYMIV-Sb). Total nucleotide and predicted amino acid sequence + analysis of MYMIV-Sb with other yellow mosaic virus isolates infecting legumes established + dichotomy of the isolates into two species, namely, MYMIV and mungbean yellow mosaic virus + (MYMV). The involvement of at least two distinct viruses in the etiology of soybean YMD in + India is reported.
There are conflicting reports about genetics of resistance to MYMV. + However, in most cases susceptibility has been shown to be dominant and governed by two genes. + The strains can be distinguished from each other.
At present essentially two sources of + resistance is being used in AICRP on soybean, namely G. Max cv. UPSM-534 and the wild species + G. sojae (Ram et al., 1984) . There is an urgent need to identify newer sources of resistance + and to understand the nature of resistance." + file: "Screening_and_utilization_of_soybean_germplasm_for_breeding_for_resistance_against_Mungbean_yellow_mosaic_virus.pdf" + +- title: "Screening of Soybean Genotypes for Resistance against Stem Fly (Melanagromyza sojae Zehnt.)" + authors: "Awasthi, M.K. ;A..N. Sharma and R.R.Deshpande" + abstract: " Thirty-five soybean genotypes comprising of advanced breeding lines, germplasm lines, released + varieties and farmers. selections were evaluated for resistance against three major + insect-pests, viz. stem fly, girdle beetle and green semilooper. Some new parameters that have + direct impact on grain yield have been used to categorize the genotypes into resistance groups. + Accordingly, breeding lines . B14P58-59, D2P11, D2P23, D2P25, D3P6, D3P8, D3P23, D4P20, D6P18, + D6P22, released variety - JS 93-05, and farmers. selections - Samart, Sel.-280, Sel.-1040, + Sel.120, JS 93-05 and Sel. 2002 were found to possess multiple insect resistance.
Soybean, + Glycine max (L.) Merrill, is attacked by about twenty different major insect pests. Out of + these, stem fly (Melanagromyza sojae), girdle beetle (Oberiopsis brevis) and green semilooper + (Chrysodexcis acuta) are predominant in central part of the country, which contribute about 70 + % of area and production. These insect-pests account for more than 25 % reduction in yield. The + most economical way to deal with these insect-pests and avoid yield losses, is to cultivate + insect resistant / tolerant varieties. Hybridization, involving identified resistant sources + and agronomically suitable genotypes, is in progress at National Research Centre for Soybean + (NRCS), Indore (M.P.). Several advanced generation progenies have exhibited good yield + potential. But their response against major insect-pests was not deciphered. In order to + identify potential resistant genotypes against stem fly, girdle beetle and green semilooper + field screening was carried out using more relevant screening criteria." + file: "AwasthiFullPaper2003.pdf" + +- title: "Soybean Cultivar Identification Within a Selected Group Using Only an Agarose Gel System with Simple Sequence Repeat DNA Markers" + authors: "Prashant Bommi and David L. Ferguson" + abstract: " This research focuses on the feasibility of using only high-resolution agarose gel + electrophoresis with simple sequence repeat (SSR) DNA markers to distinguish elite soybean + [Glycine max (L.) Merr.] cultivars. Most of the soybean research with SSR markers has utilized + sequencing polyacrylamide gel electrophoresis. We tested our ability to distinguish between + four elite cultivars using only high-resolution agarose electrophoresis with eleven SSR makers. + Fragment sizes differing by seven base pairs or more could be easily separated. Of the eleven + SSR markers, five markers exhibited visible polymorphisms between the four cultivars. Two SSR + markers were found that could distinguish between all four cultivars. These results indicate + that this method could be used to identify cultivars within a much larger selected group. + Although agarose gel electrophoresis does not have the precision of polyacrylamide gel + electrophoresis, it might find great utility with SSR markers for soybean cultivar + identification." + file: "Soy_Gen_Newsletter8_A.pdf" + +- title: "Linkage Test of Necrotic Root (Rn1) with Chlorophyll-deficient (Y18)" + authors: "R. G. Palmer" + abstract: " The necrotic root mutant locus (Rn1) has been tested for linkage with Fr1 root fluorescence, + classical linkage group 1, (LG1), Pgm1 phosphoglucomutase, (LG15), Mdh1 malate dehydrogenase, + Idh1 isocitrate dehydrogenase, (LG11), Ep seed coat peroxidase, (LG12), W4 flower color, and + CD-5 chlorophyll deficient (Kosslak et al., 1996; Wubben and Palmer 1998; Palmer 2005). No + linkage was detected.
The necrotic root mutants descended from germinal revertants in the + w4-mutable line (Palmer et al. 1989). The chlorophyll-deficient mutant y18 is descended from + Y18-m, T225M (Sheridan and Palmer 1975). The Y18 mutant is a duplicate factor mutant. Y18-1 and + Y18-2 are located on the USDA/ISU molecular map on linkage groups B2 and D2, respectively (Kato + and Palmer, 2004).
Our objective was to test for linkage between the necrotic root mutant + locus, Rn1, and the duplicate chlorophyll-deficient mutant locus, Y18." + file: "LinkageTestofNecroticRoot.pdf" + +- title: "Two New Necrotic Root Mutants" + authors: "Reid G. Palmer and A. Assibi Mahama" + abstract: " In soybean [Glycine max (L.) Merr.], five necrotic root mutants have been identified. Three were + recovered among germinal revertant progeny of the w4-mutable line (Palmer et al., 1989) and + they are allelic (Kosslak et al., 1996). Twenty three necrotic root mutants were identified in + a second gene tagging study with the w4-mutable line. One has been tested and was allelic to + the three from w4-mutable (Andersen and Palmer, 1997). The fifth characterized necrotic root + mutant was identified in family EMS-95 which was descended from EMS treated cultivar AgriPro + 1776 (Palmer and Wubben, 1998). This EMS mutant necrotic root line was allelic to the previous + four characterized necrotic root mutant lines. Necrotic root is a programmed cell death mutant + (Kosslak et al., 1997).
Our objective was to determine the inheritance and the allelism of + two additional necrotic root mutants, NR-4 and NR-5, which were identified (spontaneous + mutations) in our genetic studies." + file: "TwoNewNecroticRootMutants.pdf" + +- title: "Linkage Test of Necrotic Root (Rn1) with Root Fluorescence (Fr1)" + authors: "R. G. Palmer" + abstract: " Five recessive allelic necrotic root mutants have been identified in cultivated soybean [Glycine + max (L.) Merr.]. Four descended from germinal revertants in the w4-mutable line of soybean + (Kosslak et al., 1996; Andersen and Palmer, 1979). The fifth necrotic root mutant was + identified in family EMS-95, which was derived from EMS-treated cultivar AgriPro 1776 (Palmer + and Wubben, 1998). Necrotic root is a programmed cell death mutant (Kosslak et al., + 1997).
Linkage tests were done with the necrotic root mutant and phosphoglucomutase + (E.C.2.7.5-1), malate dehydrogenase (E.C.1.1.1.37), aconitase (E.C.4.2.1.3), diaphorase + (E.C.1.6.4.3), and isocitrate dehydrogenase (E.C.1.1.1.42) (Kosslak et al., 1996), and with + seed coat peroxidase (Wubben and Palmer, 1998). The necrotic root mutant was not linked to any + of the loci tested.
Our objective was to test determine if the root fluorescence Fr1 locus + was linked to the necrotic root Rn1 locus." + file: "LinkageStudieswithNecroticRootMutants.pdf" + diff --git a/_data/sgn/sgn_2005/minutes.yml b/_data/sgn/sgn_2005/minutes.yml new file mode 100644 index 00000000..c845003b --- /dev/null +++ b/_data/sgn/sgn_2005/minutes.yml @@ -0,0 +1,3 @@ +--- +- year: 2005 + document: "There are no minutes available for the 2005 Soybean Breeders Workshop." diff --git a/_data/sgn/sgn_2006/issue.yml b/_data/sgn/sgn_2006/issue.yml new file mode 100644 index 00000000..65e9badd --- /dev/null +++ b/_data/sgn/sgn_2006/issue.yml @@ -0,0 +1,114 @@ +--- +- title: "An Update on Generation and Use of Microarray Resources for Soybean" + authors: "Lila Vodkin, Delkin Orlando Gonzalex, Garcia Zabal, Sarah Jones-Dept. of Crop Sciences, University of Illinois, Urbana, IL 61801" + abstract: "Both spotted cDNAs and 70-mer oligo arrays are available for + global gene expression analyses and represent over 36,000 members of the soybean (Glycine max) + unigene set. The cDNA resources have been described (Vodkin et al., 2004; + http://soybeangenomics.cropsci.uiuc.edu) and used to investigate many biological questions + including the processes of somatic embryogenesis (Thibaud-Nissen et al., 2003), soybean seed + development and germination (Jones et al., 2006; Gonzalez et al., 2006), and the responses to + pathogen challenge (Zho et al., 2005) and to elevated carbon atmospheric conditions (Ainsworth + et al., 2006). In addition, they proved useful for identifying single gene differences between + isogenic lines (Zabala and Vodkin, 2005). Both cDNA and oligo microarrays are distributed to + the community on a cost recovery basis. Contact Lila Vodkin, Department of Crop Sciences, + University of Illinois for availability of slides of either the GmcDNA or GmOLIGO microarrays + sets for Glycine max." + file: "Update_on_generation_and_use_of_Microarray.pdf" + +- title: "SoyCAP: Roadmap for Soybean Translational Genomics " + authors: "Gary Stacey1, Anne Dorrance2, Henry Nguyen1, Vince Pantalone3, Wayne Parrott4, Randy Shoemaker5, and David Sleper1" + abstract: " Executive Summary
Soybean is the most valuable legume crop, with numerous nutritional and + industrial uses due to its unique chemical composition. Recently, a group of legume specialists + voted soybean as the representative species of the phaseoloid legumes, the group that contains + most legume crop species. Elucidating the genome sequence of soybean was chosen as the top + priority. Through a series of past workshops and discussions, the soybean community developed + and refined a cogent plan for soybean genomics. Many of the preliminary goals identified have + already been accomplished. Thus, soybean is well positioned as a key model for translational + genomics.
With this in mind and with funding from the USDA National Research Initiative, a + SoyCAP planning conference was held in St. Louis, MO, from December 16-17, 2004. A largely + elected steering committee organized the meeting, which was attended by 30 soybean experts, as + well as observers representing industry, commodity groups and the USDA. Attendance at the + conference was purposely slanted toward soybean breeders, since it is this group that will + ultimately develop improved soybean germplasm, aided by genomic tools and information. Over a + two-day period, with much give and take, the following three objectives, in order, were chosen + as representing the most critical needs, as well as the areas to which translational genomics + could be effectively applied:
I. Biotic Stress: Efforts should be mounted to develop + breeder-friendly molecular markers to identify QTL regions encoding resistance to a variety of + soybean diseases and pests. A special focus should be placed on developing markers to aid + breeders in developing soybean germplasm with decreased susceptibility to Asian soybean rust. +
Finally, transgenic approaches should be considered to develop soybean germplasm resistant + to priority pathogens and pests, especially in those cases where genetic resistance has proved + elusive.
II. Seed composition: Breeder-friendly molecular markers also should be developed + towards seed target traits, in order to increase seed protein quality and quantity, without + reducing seed yield or oil. Given the growing importance of biodiesel and the importance of oil + quality in nutrition, efforts should be made to develop markers to allow breeders to engineer + soybean with optimal oil composition. Finally, since soybean farmers are paid based on soybean + seed yield, there is a need to broaden the soybean genetic base and foster technological + innovations for sustainable yield improvements.
III. Abiotic stress: Environmental stress + is among the leading causes of soybean yield reduction. Drought, iron limitation, heat and cold + stress, and flooding were identified as key areas in need of additional research with the goal + of developing breeder-based tools for soybean improvement. Among these, increased drought + tolerance was chosen as the top priority for soybean improvement through translational + genomics.
In addition to these research priorities, participants at the SoyCAP planning + conference also set priorities with regard to information transfer, outreach, education and + extension. Perhaps most notable, the participants called for the development of a novel, + Web-based Soybean Breeder's Toolbox. This resource in envisioned as an interactive database to + deliver genomic and genetic information in a manner targeted for and conducive to breeding and + crop improvement strategies. The Toolbox also will play an educational role.
Specific + timelines were set to achieve the consensus goals identified. A management plan was developed, + as well as policies on public release of information and intellectual property. A coordination + committee was chosen and charged with preparing a SoyCAP grant proposal following the + guidelines set during the planning conference." + file: "soycap_white_paper.pdf" + +- title: "Soybean Genetics Executive Committee" + authors: "James E. Specht" + abstract: " James E. Specht
Charles E Bessey Professor
of Agronomy & Horiculture
322 Keim + Hall
East Campus- Fair Street
University of Nebraska
Lincoln, NE + 68583-0915
jespech@unlnotes.unl.edu
Since 2004, the Soybean Genetics Executive Committee + (SoyGEC) has had the responsibility of representing both the soybean genomics and soybean + breeding research communities. This has been accomplished in a number of ways. For example, the + first GEC brought together members of the broader soybean research community together for a + July 2005 meeting at St. Louis, at which the attendees developed a draft plan for future + strategic research thrusts and then specific goals to achieve the strategic objectives. That + draft plan, which was subsequently reviewed/revised by the broader research community, is now + available at SoyBase. Another example is the many efforts by the GEC to work with federal, + state, and other research funding agencies relative to enhancing soybean research funding. The + GEC also attempts to assist and encourage collaboration among soybean researchers when large + research grant proposals, such as SoyCAP are developed by the community. More about SoyGEC can + be found on the SoyBase web site.
The current SoyGEC is comprised of Jim. Specht (Chair) + and Randy Nelson (both have one year left of a 3-year term); Gary Stacey and Brian Diers (both + have two years left), and Tommy Carter (recently elected to a 3-year term). A proposal was just + put forth for a soybean research community vote to expand the GEC to six members, such that a + each year two persons would be elected to 3-year terms, one from the breeding and genetics + research community and one from the genomics research community, to replace members concluding + their 3-year terms. If approved, the SoyGEC will have six members by the time you read this + article.
Past SoyGEC members have included Randy Shoemaker (3-year term ended in 2006), + Perry Cregan & Roger Boerma (2-year terms ended in 2005), and Wayne Parrot & Jim Orf (1-year + term ended in 2004). The shorter terms of the initial GEC members were purposeful, allowing two + member positions on the GEC to come up for election on an annual basis.
Elections to fill + two open SoyGEC membership slots each year are held in late July. Next July, we will be asking + you to nominate individuals for membership in the SoyGEC (self-nominations are also OK!). Once + the new members are on board, the election of a SoyGEC Chair will then occur (usually in August + or early September).
If you desire more information, or have questions, or simply desire to + purse an issue relevant to the SoyGEC, please feel free to contact any current SoyGEC member. +
" + file: "SoyGEC.pdf" + +- title: "SoyMap: an integrated map of soybean for resolution and dissection of multiple genome duplication events" + authors: "Scott A. Jackson1, Rod A. Wing2, Gary Stacey3, Gregory May4 and Randy C. Shoemaker5" + abstract: "SoyMap is an NSF-funded project to create an integrated genetic and + physical map of soybean as a community resource for gene cloning, evolutionary/structural + genome studies and as a predicate to determine an intelligent genome sequencing approach. + Although determination of sequencing approach has to some extent been obviated by the DOE-JGI + soybean genome initiative (whole genome shotgun approach), the integrated map is important + nonetheless to anchor the sequence map to the chromosome and linkage maps, making the sequence + map functional for the community. The SoyMap project is an outgrowth of a commodity + board-funded physical map of soybean: two BAC libraries were fingerprinted using high + information content fingerprinting (HICF) and genetic markers were placed on the physical map. + SoyMap continues this effort by expanding the library coverage with a third library, additional + makers placed on the physical map to further integrate the genetic and physical maps, and + preliminary sequencing to understand genome structure at duplicated regions and as quality + control for the current shotgun sequencing approach." + file: "SOYMAP.pdf" + diff --git a/_data/sgn/sgn_2006/minutes.yml b/_data/sgn/sgn_2006/minutes.yml new file mode 100644 index 00000000..6dda9c9e --- /dev/null +++ b/_data/sgn/sgn_2006/minutes.yml @@ -0,0 +1,25 @@ +--- +- year: 2006 + document: "The Soybean Genetics Committee met from 7:00 to 8:00 p.m., Monday, February 15, 2006 at the + Sheraton Westport Hotel, St. Louis, MO at the Soybean Breeders Workshop.
Committee members + present were:
1. Vince Pantalone, (2008) University of TN
2. Dr. David Walker (2008), + University of GA
3. Dr. Elroy Cober (2007), Agriculture & Agri. Food, Canada
4. Dr + .Grover Shannon, Chair (2007), University of Missouri.
5. Dr. John Tamulones (2006), + Monsanto Company, IA
6. Dr. Prakash Arelli (2006), USDA-ARS, TN
7. Dr. David Grant + [Ex-Officio], USDA-ARS, IA
8. Dr. Randy Nelson [Ex-Officio], USDA-ARS, IL
Grover Shannon + called the meeting to order and greeted new members who replace John Tamulones and Prakash + Arelli whose terms expire at the end of the meeting. New members are:
9. Jim Narvel, (2009) + Monsanto Company, VA
10. Rouf Mian, (2009) USDA-ARS, OH
Reid Palmer, Iowa State + University indicated that an article published in Crop Science (1996) 36:1153-1156 stated the + Soybean Genetics Committee had tentatively approved a gene symbol rj8 for nodulation response. + Prakash Arelli reviewed previous Soybean Genetics Committee minutes and indicated no such + approval by the committee. The committee decided to review the article immediately and to + approve the symbol based on the data presented in the article.
The Gene symbol Rag1was + approved for aphid resistance from the Dowling soybean. The aphid resistant gene from Jackson + soybean was given the symbol Rag until it can be determined to be the same or a different + allele than from Dowling. The committee also approved male sterility alleles at the same locus + Ms2ms2 (Ames 1) and Ms2ms2 (Ames 2).
It was noted that people who name and publish new gene + symbols or QTL be encouraged to submit manuscripts to the Soybean Genetics Committee for + approval to insure symbols and QTL are properly named and correctly added to soybase.
David + Grant reported that gene symbols and QTL are current on soybase with new information being + added as it becomes available.
There being no other business the meeting was adjourned." diff --git a/_data/sgn/sgn_2007/issue.yml b/_data/sgn/sgn_2007/issue.yml new file mode 100644 index 00000000..082e82f0 --- /dev/null +++ b/_data/sgn/sgn_2007/issue.yml @@ -0,0 +1,185 @@ +--- +- title: "Evaluation of short season soybean cultivars for Rps6 resistance to Phytophthora sojae" + authors: "T. R. Anderson1, R. I. Buzzell1, H. D. Voldeng2, and V. Poysa1" + abstract: " Abstract:
Phytophthora root rot caused by Phytophthora sojae (Ps) is an important disease of + soybean on poorly drained soil. The resistance gene Rps6, which provides resistance to a number + of races, was reported in the cultivar Altona in 1982. A line, 840-7-3 (PI 436.477) has a gene + for resistance and has been used in the development of a number of short season cultivars in + Canada but the gene for resistance has not been previously identified. Inoculation of the + original lines and crosses derived from PI 436.477 with a limited number of Phytophthora races + indicated that Rps6 was present in a number of these lines and cultivars either alone or in + combination with other genes for resistance to Phytophthora root rot. These lines may be useful + sources of the resistance gene Rps6 in future breeding programs.

Introduction:
The + Rps6 gene for resistance to Phytophthora sojae (Ps) in the soybean cultivar Altona was reported + by Athow and Laviolette (1982). Altona resulted from a cross between O-52-903 (PI 194.654) + (Rps6) and Flambeau (rps,rps). O-52-903 is from Sweden and another Swedish line, 840-7-3 (PI + 436.477), that has been used in soybean breeding, has been resistant to hypocotyl inoculations + with Ps in prior trials at the Greenhouse and Processing Crops Research Centre, but it was not + clear if the line contained Rps6. Results obtained in 1994-95 from inoculations of the cross + 840-7-3 (Rps6?)/HARO 6272 (Rps6,Rps7) with Ps race 1 did not show segregation for resistance + and susceptibility so it was concluded that Rps6 was present in 840-7-3. However, the F2 + population was small (38 plants) and limited testing was done in the F3 and F4. This study was + conducted to identify the gene for resistance in 840-7-3 (PI436.477) and to identify cultivars + that may have resistance derived from 840-7-3.

Materials and Methods:
Because the + number of reported Ps races is increasing and the difficulty of maintaining Ps cultures with + the correct virulence formula, it has become increasingly difficult to include all races in the + characterization of putative resistance genes. As a compromise, we inoculated the Swedish lines + and progeny derived from 840-7-3 with 7 races of Ps to compare their responses. The pedigrees + of the 20 cultivars that have 840-7-3 in their parentage and genotype are listed in Table 1. + The pedigree and genotype for Cabot and Zephyr is incomplete. The lines and cultivars were + inoculated by the hypocotyl method (Anderson and Buzzell, 1992) with isolates B135R3.40, + D45R5.10, C20R10.3, D35R17.2, C25R21.6, and B17R31.16 obtained from Dr. A. Dorrance, OARDC, + OH., which correspond to Ps races 3, 5, 10, 17, 21, and 31, respectively (Hartman et al., + 1999). Rps7 which is found in Harosoy, HARO 1272 (Harosoy 63) and HARO 6272 is susceptible to + all of the above races so the presence or absence of this gene could not be verified in any of + the soybean lines screened.
Results and Conclusions:
Expected results were obtained with + the control lines/cultivars containing Rps6 (Table 2). Harosoy (rps6, rps1) was susceptible to + all races and HARO 1272 (Rps1a, Rps7) was distinguishable from Rps6 by a resistant response + with Races 17 and 31. Inoculation of O-52-903 and 840-7-3 resulted in a similar response + pattern suggesting both contain Rps6. Of the cultivars evaluated, 5 contained no resistance, 6 + contained Rps6 and Rps1a, 4 contained Rps6 and two contained Rps1a based on responses to the Ps + races used for screening. Inoculation of 3 cultivars with Races 17 and 31 resulted in a + variable response. Results indicate that Rps6 is present in 840-7-3 and some of the progeny + derived from this line and that these progeny could be used as a source for Rps6 in breeding + programs.
Inoculation of Commander resulted in intermediate responses to races 3, 17, 21, + and 31; therefore, it was not clear if Rps1a or Rps6 were present. Inoculation of Galaxy and + RCAT Bobcat with race 17 resulted in a susceptible response which was not expected if Rps1a + were present which suggests the presence of a resistant gene other than Rps1a. The presence of + Rps6 in these varieties is assumed but cannot be confirmed." + file: "Anderson_Buzzell_Voldeng_Poysa.pdf" + +- title: "Effect of mutagen on callus induction and in vitro regeneration of soybean cultivar" + authors: "Maya Kumari*1, Shanti R Patil2, and Ramesh N Pudake3" + abstract: " Abstract:
The effect of y-irradiation on callus induction and regeneration in soybean + cultivar Bragg was studied. It was observed that callus induction was there in all the explants + of control. Mean response for callus induction ranged from 47.30% (cotyledon, control) to + 25.35% (leaf segments, 25kR). MS+2, 4-D 2mgl-1 gave the best response for both leaf and + cotyledon explants. There was significant effect of irradiation as the response of treated + explants was low. The response for 20kR was better than 25kR. Mean callus weight ranged from + 155mg (cotyledon, 25kR) to 273.23 mg (cotyledon, control). The callus obtained was of + embryogenic, rhizogenic, and non-embryogenic morphotypes. Direct organogenesis was obtained + from cotyledonary node, nodal segment, and shoot tips from both treated as well as control. + Response for bud break was 71.48% in control, 62.32% in 20kR, and 57.20% in 25kR for + cotyledonary nodes. The average number of days taken for bud initiation was 4.1 days in + control, 5.7 days in 20kR, and 6.1 days in 25kR for cotyledonary nodes followed by nodal + segments and shoot tips. Nodal segments gave the highest mean number of buds (9.92 in control, + 8.65 in 20kR, and 6.24 in 25kR) followed by cotyledonary node. Mean number of buds obtained + from shoot tip was very low (3.65 in control, 3.23 in 20 kR, and 3.05 in 25 kR). Treatment + MS+BAP 5mgl-1+IBA 0.1mgl-1 was best. Root induction took place in MS+IBA 0.8mgl-1 or NAA + 1.0mg mgl-1 within 15-20 days.
Introduction:
To achieve desired improvements in soybean, + breeders have used different breeding approaches. Most of these conventional approaches have + their own limitations. Hence there is a need to supplement conventional breeding with plant + biotechnology (Gahukar and Jambhule, 2000). Several techniques in tissue culture have been used + effectively for crop improvement. There are reports on in vitro regeneration of soybean (Zheng + et al, 1993; Hussian et al, 1996; Gai Junyi et al, 1996, 1997; Thome et al, 1995; Rajasekaran + and Pellow, 1997; Settu and Kumari, 1998; and Ubanprasert et al, 1998) but reports on effect of + irradiation on callus induction and regeneration in soybean are very scanty. Hence this + investigation was attempted with the aim to study the effect of y-irradiation on callus + induction and regeneration in soybean cultivar Bragg.
Materials and methods:
Seeds of + soybean cultivar Bragg were given y-rays treatment (20kR and 25kR). 7-10 days old in + vitro germinated seedlings of both treated and control were used to collect explants like + cotyledon, cotyledonary node, nodal segment, leaf segment, and shoot tips. Different + combinations of growth regulators (BAP, IAA, IBA, and 2,4-D) with MS basal medium were used to + study their effect on the various explants. Explants inoculated with the culture from + germination to callus induction, regeneration, and rooting were maintained at 25 +-2C + temperature and a photoperiod of 16 hrs of light and 8 hrs of darkness. Observations were + recorded for response on callus induction, number of days to callus induction, callus fresh + weight, callus morphology, response to shoot differentiation, days for shoot differentiation, + number of shoot buds per culture, response on root differentiation, days for root + differentiation (for both direct and indirect pathway of regeneration). The experiment for all + aspects was conducted in CRBD and the mean values of 5 aliquots were used in duplex for + analysis.
Results and Discussion:
It was observed that callus induction occurred in all + the explants of control. However in treated explants some of the treatment combinations failed + to induce callus. Mean response for callus induction ranged from 47.30% (cotyledon, control) to + 25.35% (leaf segments, 25kR) (Table.1). MS+2, 4-D 2mgl-1 gave the best response for both leaf + and cotyledon explants. There was significant effect of irradiation as the response of treated + explants was low. Gahukar and Jambhule, 2000, also found similar type of decrease in callus + obtained with increased dose of gamma rays and EMS in sugarcane. The response for 20kR was + better than 25kR. Mean callus weight ranged from 155mg (cotyledon, 25kR) to 273.23 mg + (cotyledon, control). Similar decrease in callus fresh weight was observed by Reddy et al, + 1987, in castor bean and by Singh and Singh, 1993, in sugarcane with the increase in the dose + of irradiation. Higher doses of gamma irradiation caused considerable tissue damage, which + perhaps in turn leads to reduction in callus fresh weight. The callus obtained was of + embryogenic, rhizogenic, and non-embryogenic morphotypes. Rhizogenic callus failed to + regenerate into shoot, owing to root differentiation and proliferation. Direct organogenesis + was obtained from cotyledonary node, nodal segment, and shoot tips from both treated as well as + control. Response for bud break was 71.48% in control, 62.32% in 20kR, and 57.20% in 25kR for + cotyledonary nodes (Table.2). The average number of days taken for bud initiation was 4.1 days + in control, 5.7 days in 20kR and 6.1 days in 25kR for cotyledonary nodes followed by nodal + segments and shoot tips. Treated explants took more days than the controls for bud initiation. + Nodal segments gave the highest mean number of buds (9.92 in control, 8.65 in 20kR, and 6.24 in + 25kR) followed by cotyledonary node. Mean number of buds obtained from shoot tip was very low + (3.65 in control, 3.23 in 20kR, and 3.05 in 25kR). Treatment MS+BAP 5mgl-1+IBA 0.1mgl-1 was + best. Root induction took place in MS+IBA 0.8mgl-1 or NAA 1.0mg mgl-1 within 15-20 days. + The influence of irradiation was on the lower side far all the aspects studied. This influence + was linearly related to increase in concentration of gamma rays + dose.
Conclusion:
Considering the frequency of regeneration both direct and indirect + through callus and the effect of irradiation, an alternate method for obtaining additional + variants can be followed to generate large quantity of callus for cell suspension culture on + specific media, exerting selection pressure to screen out variant cells, which then can be + allowed to regenerate to give somaclonal variants." + file: "Maya_Kumari_Shanti_R_Patil_Ramesh_Pudake.pdf" + +- title: "Tests of Linkage between Necrotic Root Locus Rn1 and Homozygous Chromosome Translocation KS172-11-3" + authors: "Reid G. Palmer" + abstract: " Introduction:
Twenty linkage groups have been identified in soybeans that are designated as + the classical genetic linkage (CGL) groups. Several linkage groups have only two loci, and two + linkage groups have nine loci.
Six translocation (interchange) genetic stocks have been + cytologically characterized in soybean (Mahama et al., 1999). These chromosome translocations + have been used to place gene order for mutants of CLG 6 and 8. In fact, these translocations + indicated that linkage groups 6 and 8 were the same linkage group (same chromosome) (Mahama and + Palmer, 2003). Thus linkage group 6 has been merged with linkage group 8, and is no longer + considered a separate linkage group.
A small F2 population (48 plants) suggested linkage of + KS172-11-3 (homozygous chromosome translocation) with necrotic root, Rn1 locus (A. A. Mahama, + unpublished results). One of the KS172-11-3 chromosome translocation breakpoints was linked to + mutants on CLG 8 (Mahama and Palmer, 2003), which is molecular linkage group (MLG) F. The + location of the other breakpoint is not known. Our objective was to test for linkage between + the necrotic root locus (Rn1) and chromosome translocation KS172-11-3.
Materials and + Methods
Plant materials
The KS172-11-3 chromosome translocation line was crossed as + female parent with grafted plants of T328 (rnl, rn1) (normal rootstock, necrotic root scion) as + male parent. The F1 plants were about 50% pollen and ovule sterile (semisterile) which + indicated successful hybridizations. Necrotic root mutant plants are usually lethal when + field-grown. Thus about half of the F2 seed from self-pollination of each F1 plant was planted + in the field (summer, 2006). The homozygous recessive necrotic root plants died. The surviving + F2 plants were individually identified and pollen fertility/sterility determined by I2KI + staining. If all the pollen gains from a plant were well-stained, the plant was classified + fertile. This means that the fertile F2 plants were either homozygous normal chromosomes or + homozygous translocated chromosomes. An F2 plant with about equal numbers of well-stained + pollen and aborted pollen grains was considered heterozygous for the chromosome translocation. + All the F2 plants were threshed individually and 20 F3 seed were germinated in a growth + chamber. After eight days, the seedling roots were examined. The genotype of the F2 plants was + determined to be homozygous dominant for normal root (Rn1, Rn1) or heterozygous (Rn1, rn1) + based upon the segregation of normal and necrotic root phenotypes.
The remainder of the F2 + seed from self-pollination of each F1 plant was germinated in a growth chamber. Only the + necrotic root seedlings were saved and transplanted to pots in the USDA greenhouse (summer, + 2006). These F2 plants were individually identified and pollen fertility/sterility determined + by I2KI staining, as was done with the non-necrotic root field grown plants. Based upon pollen + grain staining phenotypes, the necrotic root plants were classified as either completely + fertile or heterozygous for the chromosome translocation; ie, about 50% pollen and ovule + sterile.
Results
Linkage test
A total of 221 field-grown non-necrotic F2 plants were + classified for pollen/sterility by I2KI staining. There were 107 fertile: 114 semisterile + plants which was a good fit to the expected 1:1 ratio; 2 = 0.22, P = 0.64. In the USDA + greenhouse, 74 necrotic root plants gave 35 fertile: 39 semisterile plants. This was a good fit + to the expected 1:1 ratio, 2 = 0.22, P = 0.64. The combined field and greenhouse data gave + a good fit to the expected 1:2:1:2:1:1 ratio; 2 = 0.70, P = 0.98 for the combined + segregation of normal and necrotic root and for the chromosome translocation.
Unexpectedly, + seven greenhouse-grown necrotic root F2 plants were highly male sterile, as determined by I2KI + staining. Repeated sampling of these seven plants on different days, gave pollen sterility + values between 50% to near 100%. A few selfed seed were harvested from each of the seven plants + grown in the summer of 2006, in the USDA greenhouse. These seeds were planted in January of + 2007, in the USDA greenhouse and the plants flowered in April, 2007. All seven plants had both + fertile pollen progeny and semisterile pollen progeny.
Discussion
Linkage test
The rn1 + locus was not linked to either of the breakpoints in chromosome translocation KS172-11-3. The + rn1 locus is on MLG G (R. G. Palmer et al., submitted). The KS172-11-3 showed linkage with + mutants on CLG 8 (Mahama and Palmer, 2003), which is MLG F. Additional linkage studies with + KS172-11-3 are necessary to determine the other chromosome involved in the + translocation.
The seven necrotic root greenhouse F2 plants that had varying levels of + sterility greater than 50% were all heterozygous chromosome translocation plants; ie, + semisterile plants. Also only 7 of the 39 semisterile necrotic root plants expressed this + higher level of pollen sterility and only on certain days. The necrotic root plants are weak + plants. Thus it was not possible to collect floral buds to check meiosis. The pollen grain + morphology of the plants with very high levels of sterility was similar to pollen morphology + from homozygous asynaptic and desynaptic soybean mutants. An explanation for this observation + awaits more detailed studies." + file: "Reid_Palmer_070507_Dec_2008.pdf" + diff --git a/_data/sgn/sgn_2007/minutes.yml b/_data/sgn/sgn_2007/minutes.yml new file mode 100644 index 00000000..8bf0212c --- /dev/null +++ b/_data/sgn/sgn_2007/minutes.yml @@ -0,0 +1,45 @@ +--- +- year: 2007 + document: "2007 Soybean Genetics Committee Annual Meeting
19 February 2007
Sheraton Westport, Maryland + Heights (St. Louis), MO
Committee Members:
Grover Shannon (2006 Chair; Univ. of Missouri, + Portageville, MO)
Elroy Cober (Agric. & Agri-Food Canada, Ottowa, ON)
David Walker + (USDA-ARS, Urbana, IL)
Vince Pantalone (Univ. of Tennessee, Knoxville, TN)
Rouf Mian + (USDA-ARS, Wooster, OH)
Jim Narvel (Monsanto Co., Galena, MD)
David Sleper (new member; + Univ. of Missouri - Columbia, MO)
Bill Schapaugh (new member; Kansas State Univ., Manhattan, + KS)
Randy Nelson (ex-officio; USDA-ARS, Urbana, IL)
David Grant (ex-officio; USDA-ARS, + Ames, IA)
Cases reviewed by the SGC in 2006 and Topics of Discussion
1. The SGC approved + confirmation status for the QTL cqSDA-001 at the request of Brian Diers.
2. Proposals and + questions from David Lightfoot that were considered by the SGC:
(a) Adoption of notation + for SSRs based on BAC end sequences, as outlined in a manuscript that he had submitted
(b) + Renaming of existing BARC (Beltsville Agric. Res. Center) 'Satt' markers to 'Saat' due to + problem that 'Satt' and 'Sat_' sound similar.
- The SGC decided that Dr. Lightfoot and his + colleagues should be able to name their own SSRs as they choose, but that changing the name of + the BARC markers from Satt to Saat would cause unacceptable confusion in the literature and + among researchers already accustomed to the original names.
(c) Question about whether it + would be necessary to rename all of the old qRfs1 to qRfs10 QTL to qSDS-001 to qSDS-010, and if + so whether the names would be changed to retain the same number, or whether there would be + 'free-for-all' with the first research group to rename a QTL in the series getting the '1' + position.
- The SGC decision was that the confirmed QTL should be renamed and renumbered in + the order in which they are approved as confirmed by the Soybean Genetics Committee. Multiple + confirmed QTL in the same paper should be named with consecutive three-digit identifiers.
3. + Confirmed QTLs (David Grant)
- No list exists of confirmed (cq) QTL. Suggestion that these + need to be listed in a database at the SoyBase/Soybean Breeder's Toolbox website.
- + Rationale for requirement that at least one parent from the original cross in which a QTL was + mapped be used in the confirmation population cross: Many genes exist as paralogues in a + series.
- The common-parent requirement above is the reason that the request by David + Lightfoot to grant 'cq' status to some QTL mapped by his group at Southern Illinois University + was not approved.
- A suggestion was made to ask Roger Boerma for his list of confirmed + QTL.
- Another suggestion was made to compile an annual report to the SGC on recently + accepted cqQTL.
4. A motion was made and passed to send a letter annually to editors of + journals commonly targeted by soybean breeders and geneticists to inform them of the existence + and function of the Soybean Genetics Committee, and to request that they encourage authors + proposing new names for genes or QTL to consult with the SGC for approval.
- A request was + made for David Grant to send David Walker a list of the journals that soybean QTL are most + commonly reported in, and for the latter to send letters to journal editors.
5. A proposal + had been made for the Soybean Genetics Committee to consider changing the name of the committee + to the 'Soybean Genetics and Genomics Committee' or something similar to reflect the increasing + surge in biotechnology and genomics research. A suggestion was made to form a subcommittee to + consider such a change in name and possibly in the duties of the committee.
(The eventual + outcome of discussions regarding this question was a majority vote to keep the name 'Soybean + Genetics Committee'. The rationale for this was that a majority of the SGC members considered + genomics to be an area of genetics rather than an independent area of research.)" diff --git a/_data/sgn/sgn_2008/issue.yml b/_data/sgn/sgn_2008/issue.yml new file mode 100644 index 00000000..6e8535d7 --- /dev/null +++ b/_data/sgn/sgn_2008/issue.yml @@ -0,0 +1,28 @@ +--- +- title: "Prospects of exploiting of photoperiod sensitivity gene E7 in early soybean breeding and revealing of its sources with SSR-markers" + authors: "V.E. Rozenzweig1,2, E.A. Aksyonova1, S.B. MILASH1, D.V. Goloenko1,2, and O.G. Davydenko1,2,3" + abstract: " Abstract
Recently described gene E7 for photoperiod sensitivity in soybean is prospective for + the development of early cultivars. Field trials of isolines differing in 7/e7 revealed yield + gain equal to 21% while maturity was delayed by 6 days. Weak effect (4-5 days of flowering + delay) makes distinguishing of 7 by means of hybridologic analysis somewhat complicated. + Screening of germplasm collection for 7 sources with SSR-markers allowed identification a + number of cultivars possessing this allele within different maturity groups (00 to II)." + file: "Rosenzweig081712_12_22_08.pdf" + +- title: "Gene duplication in soybean and polymorphism in the steroid biosynthesis pathway indicate highly conserved gene sequences" + authors: "DeCaire, J., Brumett, S., Payne, J., Oakley, J., Ray, J., Smith, J., Atkins, D., Bailey, D., Bell, C., Bordelon, C., Bostick, T., Butler, E., Cefalu, J., Chatham, B., Colvin, L., Dejean, K., Dobbins, S., Faul, B., Flowers, D., Goode, J., Haburne, H., Hamilton, D., Hermes, A., Hightower, J., Keator, A., Kile, M., May, B., Mcgee, P., Parker, K., Pinton, K., Pyles, B., Richardson, M., Roberson, M., Roberts, R., Rodriguez, J., Roe, R., Scott, C., Shook, L., Stokes, K., Stowell, R., Taylor, C., Thompson, C., Vincent, M., Walker, T., Patel, S., Shultz, J." + abstract: " Abstract
The steroid biosynthesis pathway is responsible for producing several important + biochemicals and precursor molecules. The KEGG database renders an authoritative view of the + interactions in this pathway. We used this and other online resources to design PCR primers + based primarily on soybean expressed sequence tags (ESTs). A total of 50 gene-based primer + pairs (38 soybean, 12 alternative) were tested for function and four polymorphism states on two + soybean breeding lines. A total of nine genes exhibited a single, monomorphic amplification + product and four amplified a single polymorphic fragment. The production of 13 multiple + monomorphic products and ten multiple products that included at least one polymorphism was also + observed. A total of 14 primer pairs failed to produce a clear amplification product. The + sequences used to design these primers were tested against an initial scaffold build of soybean + genomic sequences consisting of 950 Mbp of DNA. These data indicate that directed analysis of a + biochemical pathway can yield multiple opportunities to identify specific genic polymorphisms + in soybean, while taking into consideration the duplicated nature of the genome." + file: "Shultz_08_11_08_12_26_08.pdf" + diff --git a/_data/sgn/sgn_2008/minutes.yml b/_data/sgn/sgn_2008/minutes.yml new file mode 100644 index 00000000..cd5117d7 --- /dev/null +++ b/_data/sgn/sgn_2008/minutes.yml @@ -0,0 +1,54 @@ +--- +- year: 2008 + document: "2008 Soybean Genetics Committee Annual Meeting
18 February 2008
Sheraton Westport, Maryland + Heights (St. Louis), MO
Committee Members:
David Walker (2007 Chair; USDA-ARS, Urbana, + IL)
Vince Pantalone (Univ. of Tennessee, Knoxville, TN) [unable to attend meeting]
Rouf + Mian (USDA-ARS, Wooster, OH)
Jim Narvel (Monsanto Co., Galena, MD)
David Sleper (Univ. of + Missouri - Columbia, MO)
Bill Schapaugh (Kansas State Univ., Manhattan, KS)
Gary Stacey + (new member; Univ. of Missouri - Columbia, MO) [unable to attend meeting]
David Hyten (new + member; USDA-ARS, Beltsville, MD)
Randy Nelson (ex-officio; USDA-ARS, Urbana, IL)
David + Grant (ex-officio; USDA-ARS, Ames, IA)
Cases Reviewed by the SGC in 2007:
1. The SGC + approved a request by Brian Diers to name a gene for resistance to alfalfa mosaic virus + Rav1
2. The SGC approved Maria Monteros' request for confirmation status to be granted to + six QTL associated with oleic acid content. These QTL were named cqOle-001 through + cqOle-006.
3. John Rupe's request to name a gene for resistance to Pythium aphanidermatum + Rpa1 was approved by the committee.
4. The SGC reviewed a request from Eberson Calvo to name + several soybean rust resistance genes that had been mapped and reported in a manuscript by + Garcia et al.:
a) One on LG J of PI 230970 (probably Rpp2)
b) One on LG G of PI 459025 + (probably Rpp4)
The authors refrained from claiming that these genes were Rpp2 and Rpp4 + because they had not used the same isolate as had been used when these genes were originally + reported. The authors originally proposed to include the name of the linkage group in the gene + name, but the SGC recommended following the respective gene name with '[tentative]'. (For + example, Rpp2[tentative].
A novel soybean rust resistance locus on LG N was also reported in + the Garcia et al. manuscript. This locus was detected in three different PIs, so the SGC + considered the data to be sufficient to recommend assigning the name Rpp5 to this new + locus.
5. The case of David Lightfoot and his SIU colleagues' longstanding request to + recognize three SDS resistance QTL was discussed. This case had originally been submitted prior + to February 2007, but had never been resolved. The initial claim had been rejected by the SGC, + but with a request to Dr. Lightfoot for additional information to support it. Additional data + and explanations were submitted, but inconsistencies among molecular maps and the low + resolution of some maps made it difficult to determine whether there is more likely to be one + or two SDS resistance QTL near the top of LG G. (The SIU group claimed to have + sufficient evidence to show that there were two.) This group also claimed to have confirmed a + third QTL on LG C2.
As the SGC was unable to reach a consensus on how to reply at the time + of the meeting, a motion was made and passed to review the data again, and to announce a + decision within six weeks of the date of the meeting.
Other Topics of Discussion:
1. + David Hyten and Gary Stacey were confirmed as new members of the Soybean Genetics + Committee.
2. Terms were to expire for Vince Pantalone and David Walker, but due to + inability of either Rouf Mian or Jim Narvel to commit sufficient time to serve as the sole + Chair, David Walker agreed to stay on as a co-Chair.
3. Rouf Mian and David Walker were + approved as co-Chairs.
4. David Grant presented an update on the Soybean Breeder's Toolbox + and led a discussion of topics related to it:
Dr. Grant and his assistants had been working + on integration of the most recent consensus genetic map (from 2007) with the previous (2003) + map of Song et al. They had also been developing ideas about how to integrate sequence data + from the Joint Genome Initiative (JGI) project with the genetic maps of SoyBase.
Future + plans: (1) Add all mapped QTLs to the 2003 map, but make it easy for users to move between the + 2003 and 2007 maps using common markers as reference points. (2) As sequence data are released + by the JGI project, these will be added to the database. The physical map will contain a subset + of markers to allow users to orient themselves when moving between maps.
5. David Walker + proposed making the SGC more international to gain/retain more credibility and recognition + outside of North America. A suggestion was made to look up the original bylaws in the Soybean + Genetics Newsletter to find out whether there any rules that pertained to this action. Another + suggestion was made to expand the size of the committee as an alternative to replacing North + American members with members from other continents.
6. David Sleper suggested considering + the use of conference calls to improve discussion of cases being considered by the SGC." diff --git a/_data/sgn/sgn_2009/issue.yml b/_data/sgn/sgn_2009/issue.yml new file mode 100644 index 00000000..355d8ce9 --- /dev/null +++ b/_data/sgn/sgn_2009/issue.yml @@ -0,0 +1,36 @@ +--- +- title: "Induced variation in quantitative traits due to physical (gamma rays), chemical (EMS) and combined mutagen treatments in soybean [Glycine max L.)Merrill]" + authors: "M. H. Khan and S. D. Tyagi: Department of Plant Breeding and Genetics K.P.G. College, Simbhaoli, Gaziabad (U.P)" + abstract: " Abstract
Seeds of these two soybean genotypes viz., Pusa-16 and PK-1042 were exposed to + various doses of gamma rays, ethyl methane sulphonate (EMS) and combination of both. + Observations on germination %, lethality % (30 days after sowing and at flowering) and pollen + sterility were recorded on M1 generation. The results indicated that a reduction in the + germination percent over control was noticed in all the mutagenic treatments in both the + cultivars. In general, reduction in germination percent was associated with the increase in the + dose/concentration of the mutagen. The LD-50 for Pusa-16 was found to lie between 30KR + 0.2% + EMS and 45 kR + 0.2% EMS, while in PK-1042, it was found to lie between 30 kR and 45 kR gamma + rays and in between the higher doses/concentrations of combined treatment. In case of pollen + sterility combined treatment exhibited high percentage of pollen sterility followed by EMS and + gamma-rays. In Pusa-16, the increase in the dose/concentration of gamma rays and EMS was + associated with the increase in the pollen sterility percent, while in combined treatment, the + increase was noticed upto the intermediate dose level followed by decrease at higher level. On + the other hand in PK-1042, increase in EMS concentration was associated with increase in + sterility percent, while no definite trend was noticed in gamma rays and combined + treatment.
Key words: Gamma rays, EMS, germination, lethality, pollen sterility, soybean." + file: "Khan120509.pdf" + +- title: "EVOLUTIONARY ASPECTS MICROSPOROGENESIS AND MICROGAMETOGENESIS INTERSPECIFIC HYBRIDS WITHIN THE GENUS Glycine L." + authors: "Margarita Kozak" + abstract: " Abstract
A cytogenetic study of interspecific Glycine max & G. soja + hybrids was made. The F1 - F2 meiosis and pollen formation was studied on preparations stained + by Felgen and by acetokarmin. The range in pollen diameter variability of interspecific hybrids + proved significant: 9, 6-31, 2 mkm, and giving evidence of some meiotic disturbances in the + process of microsporogenesis. Chromosomes of interspecific hybrids are from desynaped bivalents + univalents during diakinesis - metaphase-I. The interspecific hybrid chromosome composition + arises because of chromosome dissimilarity caused by the taxonomic differences in soja bean + species under study. Genome isolation in hybrids and chromosome conjugation within each of the + genomes confirmed the hypothesis on the leading role of polyploidy in the phylogeny of G. max + and G. soja.
Keywords: Glycine max, G. soja (G. ussuriensis), wild soybean, phylogeny, + Interspecific hybrid, Microsporogenesis, meiosis, Microgametogenesis, pollen." + file: "Kozak073009_10_28_09.pdf" + diff --git a/_data/sgn/sgn_2009/minutes.yml b/_data/sgn/sgn_2009/minutes.yml new file mode 100644 index 00000000..437c3940 --- /dev/null +++ b/_data/sgn/sgn_2009/minutes.yml @@ -0,0 +1,89 @@ +--- +- year: 2009 + document: "Minutes for the Soybean Genetics Committee meeting
16 February 2009
Sheraton Westport, St. + Louis, Missouri, U.S.A.
2008-2009 Members (all in attendance):
Rouf Mian (co-chair) +
David Walker (co-chair)
David Sleper
David Hyten
Bill Schapaugh
Gary + Stacey
Jim Narvel
David Grant (ex-officio)
Randy Nelson (ex-officio)
Also in + attendance: Jennifer Yates, Pengyin Chen, and several guests.
Brief review of cases and SGC + decisions from Feb 08 to Feb 09
1. Confirmation of two recessive seed phytic acid QTL: + cqPha-001 (on Chrom 3/LG N) and cqPha-002 (on Chrom 19/LG L). Confirmation status was requested + by Andrew Scaboo (former M.S. student with Vince Pantalone at the Univ. of Tennessee) in + February 2008 (Manuscript: Scaboo et al.; submitted to Crop Sci.).
2. Recommended and + approved naming a soybean rust resistance gene Rpp1-b.
Brian Diers (Univ. of Illinois) had + requested approval to name a resistance gene on Chrom 18/LG G of PI 549538A Rpp1b in June 2008 + (Manuscript: Chakraborty et al.). The SGC recommended insertion of the dash to comply with + nomenclature rules.
3. Recommended adoption of the name Ncl2 for a dominant salt tolerance + gene from G. soja accession PI 483463, and assigning Ncl1to a previously reported salt + tolerance gene from G. max line S-100. Grover Shannon (Univ. of Missouri, Portageville) had + requested permission to assign the symbol Ncl-Gs to the G. soja gene in July 2008 (Manuscript: + Lee et al.). Authors concluded from 15:1 segregation for tolerance:sensitivity among F2:3 + families from a cross of G. max S-100, PI 483463 that the G. soja gene was different from a + salt tolerance gene previously identified in S-100.
4. Recommended naming a newly mapped + maturity gene locus E8E8 on the basis of evidence that it is independent from previously named + maturity loci. Elroy Cober (Agriculture and Agri-Food Canada) requested advice on naming the + new locus in September 2008. (Manuscript: Cober et al.)
5. The SGC received a manuscript + from Curt Hill (Univ. of Illinois) in September regarding an aphid resistance gene from PI + 200538 that maps to the same region on LG F as Rag2 (from PI 243540). The SGC decided that this + did not really fall under the Committee's jurisdiction, since the authors were not proposing a + new name for the gene that they had mapped.
6. Approved recognition status and naming an + SCN resistance QTL on LG D2 as cqSCN-005. David Lightfoot (Southern Illinois Univ.) requested + recognition of confirmation status for this QTL in December 2008 (Manuscript by Kazi et + al.).
7. Received requests from Dechun Wang (Michigan State Univ.) for approval of gene + symbols for recessive aphid antibiosis resistance genes from PI 567598B (rag1b on LG M), PI + 567541B (rag4 on LG F, and rag1c), and for a recessive aphid antixenosis gene from PI 567543C + (rag3b). The Committee did not make a ruling on these requests, but they were discussed at the + meeting, and they illustrated the need for nomenclature that can be applied to genes and QTLs + that have not yet been confirmed by the SGC, but which scientists may want to include in + presentations prior to an SGC ruling. (More information on the discussion is provided + below.)
C. General issues discussed and/or voted on:
1. Dr. Jennifer Yates (Monsanto, + Galena, MD) and Dr. Pengyin Chen (Univ. of Arkansas) were confirmed as the two new members from + North America.
2. A motion was passed to increase the number of members in the Soybean + Genetics Committee to include members from outside of North America. Another motion was passed + to expand the committee by four international members, adding two in 2009 and two more in 2010. + After that, additional international members would be elected to replace members rotating off + of the Committee, in order to maintain a complement of four international members. The intent + of the motion passed is to keep a balance between the number of representatives from Asia and + South America, since these are the other continents on which extensive soybean genetic research + is being conducted.
3. Bill Schapaugh and David Walker were elected as co-chairs of the SGC + to serve from February 2009 to February 2010. Rouf Mian and Jim Narvel rotated off of the + Committee.
4. The proportion of SGC members needed to support a proposed gene name or on + confirmation status for a QTL before it could be considered an SGC decision was discussed, and + a motion was passed to adopt decisions based on a simple majority (i.e., >50% of the members + supporting it).
5. A motion was passed to give the ex-officio members (currently Randy + Nelson and David Grant) voting rights. Although this privilege had been assumed, there was + apparently nothing in writing to confirm it.
6. A discussion was initiated about the need to + revise the existing gene nomenclature rules from 1997 in order to solve incompatibility + problems between some of the existing nomenclature rules and the SoyBase database. David Grant, + Dave Hyten and David Walker will draft a revision of the rules to submit to the SGC for + commentary.
7. A need for nomenclature rules for gene names proposed by researchers, but not + yet confirmed by the SGC, was also discussed. This was prompted by Dechun Wang's request to + have several aphid resistance gene names approved prior to a presentation that he was to give + the following day. In other cases, researchers may wish to 'reserve' a name when they feel that + they have sufficient data to support either a novel locus or likely allelism with a previously + reported gene. There was some concern about using the proposed name without any indication that + it had not yet been approved by the Committee. Some SGC members advocate using a unique gene + name for unconfirmed genes, an arrangement with precedence in some other plant genetics + communities. Other members were concerned about the fact that the name initially used for a + gene tends to stick, and that having two unique names for the same gene might cause unnecessary + confusion. A compromise was proposed in the use of the postscript '_provisional' to indicate + that a particular gene name had not yet been confirmed by Committee vote. For example, the + aphid resistance gene from PI 567598B would be named 'rag1-b_provisional'. A suggestion was + also made that authors be allowed to use this 'provisional' nomenclature in only one + manuscript, and that the next manuscript should provide evidence for confirmation or rejection + of the original name. This proposed nomenclature rule was accepted tentatively, but appeared to + warrant further debate and discussion.
8. There was also a discussion about the used of + chromosome numbers and linkage group designations, and the need for a Soybean Genetics + Committee policy regarding this. A debate took place about the validity of chromosome numbers + that had been assigned on the basis of genetic length instead of using cytogenetics studies + with primary trisomics. The point was raised that the DOE-Joint Genome Institute sequencing + project had insisted on using chromosome numbers instead of molecular linkage group names, + which had forced the issue. The JGI might have assigned numbers arbitrarily to the nine + unnumbered linkage groups if members of the soybean genetics community had not advocated + assignment of chromosome numbers to the remaining linkage groups on the basis of genetic + length. Although some members were uncomfortable with the method used, a majority agreed that + with the release of the Williams 82 sequence by the JGI, it would be difficult or impossible at + this point to halt the use of the chromosome numbers used in that project. However, it was also + pointed out that with the extensive use of Linkage Group names in the literature, it will be + helpful to provide both Chromosome number and Linkage Group name in articles. Therefore, the + Soybean Genetics Committee voted to encourage authors to use the appropriate Chromosome number + followed by the corresponding Linkage Group name." diff --git a/_data/sgn/sgn_2010/issue.yml b/_data/sgn/sgn_2010/issue.yml new file mode 100644 index 00000000..644c04d3 --- /dev/null +++ b/_data/sgn/sgn_2010/issue.yml @@ -0,0 +1,43 @@ +--- +- title: "Genotype x environment interaction and stability analysis for yield and its components in soybean [(Glycine max L.) Merrill]" + authors: "S. D. Tyagi and M. H. Khan" + abstract: " Department of Plant Breeding and Genetics
K.P.G. College, Simbhaoli, Gaziabad (U.P)
M. H. + Khan: E-mail- kmudasirhafiz@yahoo.com
Abstract
The present investigation was carried out + to study stability performance over eight environments for seed yield and its components in 40 + genetically diverse genotypes (37 indigenous + 3 exotic) of soybean using a randomized complete + block design. The partitioning of (environment + genotype x environment) mean squares showed + that environments (linear) differed significantly and were quite diverse with regards to their + effects on the performance of genotypes for seed yield and majority of yield components. Stable + genotypes were identified for wider environments and specific environments with high per se + performance (over general mean) for seed yield per plant. The investigation revealed that the + genotype MACS-47 was desirable and stable across the environments. Other genotypes PK-308, + Bisra Soya, Indra Soya-9, Alankar, and IS-22 were found to be suitable for favorable + situations, while genotypes Pusa-16, Pusa-40, MACS-2, MACS-450, and JS-325 were responsible to + poor environments for seed yield.
Key words: G X E interaction, stability analysis, seed + yield, soybean" + file: "Khan191109.pdf" + +- title: "Gene Effects for Major Quantitative Traits In Soybean [Glycine Max (L.) Merrill]" + authors: "Rajneesh Kumar Singh, Pushpendra, Kamendra Singh and P. M. Bhardwaj" + abstract: " Department of Genetic and Plant Breeding, College of Agriculture, G. B. Pant University of + Agriculture and Technology, Pantnagar 263145 , U.S. Nagar, Uttarakhand, + India.
Abstract
Breeding methods are dictated by the gene action, interaction, and + linkage relationship of genes conditioning continuous phenotypic variation of various metric + traits. Thus both additive and non-additive components of genetic variance, along their allied + parameters are of immense use for plant breeders under different situations. An estimate of + additive variance and non-additive variance provides a measure of how likely particular traits + can be selected for or against and that of whether hybridization or a population improvement + programme. The present investigation was carried out at Crop Research Center, Pantnagar during + the Kharif season of 2008-2009. Five generations viz. P1, P2, F1, F2, and F3 were evaluated in + an experiment under a compact family block design to estimate gene effects for major agronomic + traits in three soybean single crosses (PS 1347 x G. soja, JS 335 x UPSM 534 and PS 1347 x JS + 335). The results showed additive gene effects determined the inheritance of agronomic + characters viz. days to 50 per cent flowering, days to maturity, plant height, and harvest + index. Dominance gene action was critical in determining the yield. Duplicate epistasis was + significantly important in inheritance of most traits studied. On the basis of results obtained + from the present investigation, it is suggested that these major quantitative traits in the + desirable genotypes play a major role in the improvement of high yielding varieties of soybean + through exploitation of additive and non-additive variances.
Key words: Soybean, + quantitative traits, gene effects, additive, non-additive." + file: "Rajneesh_Kumar_Singh_2_16_10.pdf" + diff --git a/_data/sgn/sgn_2010/minutes.yml b/_data/sgn/sgn_2010/minutes.yml new file mode 100644 index 00000000..b22cad66 --- /dev/null +++ b/_data/sgn/sgn_2010/minutes.yml @@ -0,0 +1,48 @@ +--- +- year: 2010 + document: "2010 Soybean Genetics Committee Annual Meeting Minutes
22 February 2010
Sheraton Westport, + St. Louis, MO
2009-10 Committee Members:
David Walker (Co-chair; USDA-ARS, Urbana, + IL)
Bill Schapaugh (Co-chair; Kansas State Univ.)
David Sleper (Univ. of Missouri - + Columbia)
David Hyten (USDA-ARS, Beltsville, MD)
Gary Stacey (Univ. of Missouri - + Columbia)
Jennifer Yates (Monsanto Corp., Galena, MD)
Pengyin Chen (Univ. of + Arkansas)
Suk-Ha Lee (Seoul National Univ., Rep. of Korea)
Ricardo Abdelnoor (Embrapa, + Londrina, Brazil)
David Grant (ex officio; USDA-ARS, Ames, IA)
Randy Nelson (ex officio, + USDA-ARS, Urbana, IL)
Members present: David Walker, Pengyin Chen, David Grant, Jennifer + Yates and Bill Schapaugh. Guests present: George Graef (Univ. of Nebraska), Istavan Rajcan + (Univ. of Guelph, Canada) and Tri Vuong (Univ. of Missouri - Columbia).
David Walker called + the meeting to order at 7:05 p.m.
The Soybean Genetics Committee (SGC) voted to elect Harish + Gandhi (Syngenta Seeds, Slater, IA), George Graef (University of Nebraska), Istvan Rajcan + (University of Guelph) and Kristin Bilyeu (USDA-ARS, Columbia, MO) to serve three year terms + (2010 - 2013) on the Soybean Genetics Committee. Members completing their three year terms + include: David Walker, David Sleper and Bill Schapaugh.
The committee elected David Hyten to + serve as committee chair for 2010 - 11.
The committee voted to excuse Gary Stacey from SGC + membership as per his request, but noted that he was willing to serve as a consultant on cases + in which his molecular genetics expertise would be of value.
David Grant proposed that the + committee approve the use of temporary gene names, but recommended changes to the exiting + nomenclature rules. The advantages and disadvantages of using temporary names and the merits of + alternative naming formats were discussed. The committee voted to approve the use of temporary + gene names. The committee voted to designate temporary gene names by placing the gene name in + brackets, followed by an underscore and then the number of the plant introduction or genotype + in which the gene was identified.
An example of the new nomenclature format would be: + [Rpp3]_PI506764 instead of Rpp?(Hyuuga). This indicates that the gene (or QTL) mapped to the + same region as the Rpp3 gene, but that at present there is not sufficient data to determine + whether it is allelic to Rpp3, or located at a tightly linked locus, possibly in the same gene + family. Although PI numbers are more difficult for many people to remember than some cultivar + or local names for accessions, the SGC encourages their use to avoid confusing two accessions + with the same local name or two sublines of the same accession.
The committee discussed the + request of Joe Polacco to rename several urease genes and provided recommendations to modify + the proposed names. These include elimination of italic type in the name, and addition of a + prefix consisting of a five-letter abbreviation of the genus and species of the source + organism. In the case of soybean, for example, this would be 'Glyma'. In addition, the SGC + recommends the use of upper case letters to indicate that an allele is dominant over another + allele whose name begins with a lower case letter, rather than using upper and lower case + letters to indicate taxonomic origins of genes, as proposed in the manuscript. After evaluating + these suggestions the authors will be requested to resubmit the manuscript to the committee for + consideration.
David Walker informed the committee that Henry Nguyen will step down as + editor of the Soybean Genetics Newsletter on 1 March 2010. The committee suggested that David + seek input from participants attending the Soybean Breeder's Workshop on the usefulness of + continuing the newsletter. (This was done, and though no formal vote was taken, comments from + the audience seemed to suggest that the Soybean Genetics Newsletter may no longer be essential + to the soybean breeding/genetics community, particularly since so few reports had been + submitted to it in recent years.)
With no further business, a motion to adjourn the meeting + was approved at 8:02 p.m." diff --git a/_data/sgn_list.yml b/_data/sgn_list.yml new file mode 100644 index 00000000..47e81bf4 --- /dev/null +++ b/_data/sgn_list.yml @@ -0,0 +1,25 @@ +--- +- sgn_year: sgn_1999 + year: 1999 +- sgn_year: sgn_2000 + year: 2000 +- sgn_year: sgn_2001 + year: 2001 +- sgn_year: sgn_2002 + year: 2002 +- sgn_year: sgn_2003 + year: 2003 +- sgn_year: sgn_2004 + year: 2004 +- sgn_year: sgn_2005 + year: 2005 +- sgn_year: sgn_2006 + year: 2006 +- sgn_year: sgn_2007 + year: 2007 +- sgn_year: sgn_2008 + year: 2008 +- sgn_year: sgn_2009 + year: 2009 +- sgn_year: sgn_2010 + year: 2010 diff --git a/_layouts/sgn_issues.html b/_layouts/sgn_issues.html new file mode 100644 index 00000000..fbebc046 --- /dev/null +++ b/_layouts/sgn_issues.html @@ -0,0 +1,35 @@ +--- +title: {{ page.title }} +layout: default +--- +{% assign sgn_year = page.sgn_year %} +{% assign year = page.year %} +{% assign issue = site.data.sgn[sgn_year].issue %} + +

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+ {% endif %} + +{% endfor %} + +

Back to the Soybean Genetics Newsletter index page

+ +{% comment %} +{% endcomment %} diff --git a/_layouts/sgn_minutes.html b/_layouts/sgn_minutes.html new file mode 100644 index 00000000..ca5beabd --- /dev/null +++ b/_layouts/sgn_minutes.html @@ -0,0 +1,17 @@ +--- +title: {{ page.title }} +layout: default +--- + +{% assign sgn_year = page.sgn_year %} +{% assign minutes = site.data.sgn[sgn_year].minutes %} + +{% for item in minutes %} +

Minutes for the Soybean Genetics Committee, {{ item.year }}

+

{{ item.document }}

+{% endfor %} + +

Back to the Soybean Genetics Newsletter index page

+ +{% comment %} +{% endcomment %} diff --git a/community/sgn/index.html b/community/sgn/index.html new file mode 100644 index 00000000..64fb2b25 --- /dev/null +++ b/community/sgn/index.html @@ -0,0 +1,35 @@ +--- +layout: default +title: Soybean Genetics Newsletter and Minutes +sitemap: community/sgn +--- +{% if site.data.sgn_list %} +{% assign groups = site.data.sgn_list | sort: "sgn_year" %} + +

Soybean Genetics Newsletter archive (1999-2010)

+ +

+ Welcome to the Soybean Genetics Newsletter (SGN), previously edited by Henry Nguyen and hosted by + the National Center for Soybean Biotechnology at the University of Missouri. + Based on open discussion at the 2010 Soybean Breeders Conference it was decided to cease publication of the Newsletter. + However, the community thought it was important that the past issues of the SGN remain available. + To accomplish this the entire SGN web site has been moved to SoyBase. +

+

+ Links below lead to each SGN issue and the papers associated with that issue, and also to the minutes of the Soybean Genetics Committee for that year. +

+ + + + + {% for group in groups %} + + + + + {% endfor %} + +
{{ group.year }} Issue{{ group.year }} Minutes
+ +{% endif %} + diff --git a/projects/index.html b/projects/index.html index 84907e9f..4b3578b6 100644 --- a/projects/index.html +++ b/projects/index.html @@ -1,7 +1,7 @@ --- layout: default title: Projects -sitemap: community +sitemap: projects --- {% if site.data.project_list %} {% assign groups = site.data.project_list | sort: "year" %}