Submitted to: Agronomy Abstracts
Publication Type: Abstract only
Publication Acceptance Date: 7/10/2000
Publication Date: N/A
Citation: Interpretive Summary:
Technical Abstract: Wild soybean (Glycine soja) could be an important genetic source for broadening the base of soybean breeding. Data available on variation within G. soja are limited. The objective of this research is to evaluate the accessions of G. soja in the USDA Soybean Germplasm Collection for agronomic, morphological and seed composition traits. All accessions were planted in 1998 and 1999. Those in MG 000 to IV were planted at Urbana, Illinois in aphid-proof cages. Accessions in MG V and greater were grown at Stoneville, Mississippi. Seed samples will be analyzed for oil, protein, fatty acid and isoflavone concentration. Data from the 1998 analyses identified accessions with either very high or very low concentrations for protein, accessions with very low concentrations of oil, and accessions with very high concentrations of linolenic acid. Digital images were taken of leaflets of each accession and will be analyzed to classify differences in leaflet shape. In 1999 nearly a 10-fold difference in plant length was noted among some accessions approximately 30 days after planting. Differences in plant growth were not related to relative maturity. Selected accessions were replicated 6 times in 2000 to verify these differences in early plant growth.