Effect of the mutant Danbaekkong alleles on soybean seed protein and oil concentration and amino acid composition
M. J. Cunicelli, H. Bhandari, V. R. Pantalone, and C. E. Sams.  2017.  World Soybean Research Conference 10, Poster completed and displayed in Plant Biotechnology Bldg. Conference cancelled due to Hurricane Irma.

Soybean [Glycine max (L.) Merr.] is the world’s leading source of vegetable oil and high quality protein meal. Increasing soybean protein concentration through selection while maintaining oil concentration and yield has been a constant goal for plant breeders, as there is a negative correlation between protein and oil and protein and yield. The Danbaekkong (Dan) protein allele on Chromosome 20 (Gm 20) has been linked to higher protein concentration in soybeans. Inheritance for the Dan allele is dominant. The objective of this study was to determine if marker assisted selection for the Danbaekkong (Dan) protein allele influences agronomic and seed quality traits. A population of 24 F8:10 near isogenic lines of soybean was created from a cross between G03-3101 and LD00-2817P. Of these 24 NILs, 12 were wild type (WT) and 12 were mutant Dan type. These NILs were grown in a replicated three location field trial across Tennessee. The Dan allele resulted in a significant increase in protein.