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United States Department of Agriculture

Agricultural Research Service

Research Project: Development and Characterization of Soybean Germplasm, Curation of Stored Accessions, and Regional Evaluations of New Genotypes

Location: Crop Genetics Research Unit

Project Number: 6066-21220-012-00
Project Type: Appropriated

Start Date: May 16, 2013
End Date: May 15, 2018

Objective:
Objective 1: Develop and release novel soybean germplasm with high yields, with improved quality, and with biotic and abiotic stress tolerance that are better suited for sustainable production, especially in the southern United States, and are useful for expanding soybean genetic diversity. Objective 2: Use conventional genetics and genomic tools to characterize genes controlling important seed and agronomic traits, and characterize the physiology of important traits in soybean. Sub-objective 2. A. Determine the inheritance and genomic location of genes controlling resistance to Phomopsis seed Decay (PSD). Sub-objective 2. B. Identify germplasm and soybean traits that maximize profitability for dryland producers in the midsouthern United States. Sub-objective 2. C. Use oleic acid Near Isogenic Line (NIL) to investigate potential relationships to Cercospora kikuchii infection in seed and leaves. Objective 3: Develop resources and techniques to enable more effective characterization of the genetics, genomics, and interactions of traits to aid in dissecting complex soybean traits. Objective 4: Conserve available genetic diversity in genus Glycine; maintain, characterize, and evaluate new accessions within the southern USDA Soybean Germplasm Collection. Objective 5: Manage and coordinate the Uniform Soybean Tests - Southern States, including seed distribution, data compilation, data analysis, and producing/distributing the annual report.

Approach:
Develop germplasm with resistance to soybean rust, charcoal rot and Phomopsis seed decay. Develop germplasm with low phytate, mid-oleic acid, high-oleic acid and low linolenic acid. Increase genetic diversity in improved southern soybean germplasm. Increase heat tolerance in soybean for improved seed germination and vigor, reduced wrinkling, hardseedness and seed discoloration. Determine inheritance and associated molecular markers of Phomopsis seed decay resistance. Characterize performance of new soybean lines with exotically-derived genetic ancestry. Elucidate relationships between disease responses and high-oleic acid soybean. Develop recombinant inbred populations, near isogeniclines, and molecular markers. Refine techniques and physiological, pathological and molecular methodologies to characterize complex soybean traits. Produce seed for maturity groups V-VIII in U.S. soybean germplasm collection and characterize new accessions. Coordinate regional testing of public soybean germplasm, analyze data and publish results annually.

Last Modified: 12/17/2014
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