Registration of LG04‐6863 Soybean Germplasm Line with Diverse Pedigree

Abstract

Soybean [Glycine max (L.) Merr.] germplasm line LG04‐6863 (Reg. No. GP‐364, PI 658307) was developed and released by the University of Missouri Agricultural Experiment Station, Delta Center, Portageville, MO, the USDA–ARS, and the Illinois Agricultural Experiment Station, Urbana, IL. It was approved for release May 2009. LG04‐6863 is an F5 plant selection composited in the F6 generation from ‘Rend’ × LG97‐9486. It has shown high yield potential in tests across the southern United States with 38% of its pedigree from plant introductions and unique diversity not known in soybeans adapted to southern U.S. environments. LG04‐6863 (relative maturity 4.4) has yielded, 101, 100, and 97% of yields of ‘Asgrow AG4403’ (3193, 4047, and 3833 kg ha−1), a widely grown Roundup Ready cultivar of similar maturity, across eight locations in the USDA Uniform Preliminary Early Group IV Test–Southern States; eight locations in the United Soybean Board Southern Early Group IV Diversity Trials; and 15 southeastern Missouri tests, respectively. It is resistant to stem canker and bacterial pustule. Reaction to phytophthora root rot (PRR; caused by Phytophthora sojae M.J. Kaufmann & J.W. Gerdemann) is unknown, but LG04‐6863 has shown good performance on heavy clay soils where PRR often occurs. Soybean introductions have been under utilized in breeding programs. LG04‐6863 will have use as an elite parent in soybean breeding programs to improve yield and broaden the germplasm base.