Location: Soybean and Nitrogen Fixation Research2012 Annual Report
1a. Objectives (from AD-416):
To develop productive group III, IV and V disease resistant, soybean varieties with improved protein, quantity, quality and stability.
1b. Approach (from AD-416):
Utilize classical and marker assisted breeding approaches to discover and introduce novel genes from adapted lines and plant introductions to develop high yielding group III, IV and V varieties with: a) 37% or greater protein and acceptable oil with resistance to nematodes and diseases, b) Improved lysine, methionine, cysteine, and other potentially limiting amino acids, c) Improve protein stability across environments, and c) Develop low phytate soybeans without seed germination issues.
3. Progress Report:
This project is related to Objective 2 of the in-house project: To discover novel genes/alleles in soybean for seed composition, determine their inheritance, determine genomic location, transfer to adapted germplasm, and release. A conventional group V line, S07-6557 with elevated protein content (37.5 %) and acceptable oil content (18.4%), has been evaluated in the Uniform Quality Traits test and in advanced tests in southeast Missouri for 3 years. This conventional line with higher than average protein is from Osage x Danbaekkong and has averaged about 2% more in protein content. It was the same yield as Jake and 5002T, high yielding conventional varieties. Three other productive conventional group V lines, S09-18186, S09-18244 and S09-14199 with about 37% protein and 19% oil were evaluated in advanced yield tests in southeast Missouri in 2010 &11 and Regional Uniform Group V tests in 2011. In addition to higher than average protein contents, these three lines have broad resistance to soybean cyst nematode (SCN) races which include races 2, 3, 5 and 14. These lines versus popular Roundup Ready and conventional checks of similar maturity were equal in seed yield.