Registration of R10‐5086 and R11‐6870 Soybean Germplasm Lines with Exotic Pedigree

Abstract

Initial narrow genetic base and selective breeding have produced a genetic bottleneck in soybean [Glycine max (L.) Merr]. In an effort to increase the genetic diversity among the parents used for breeding in southern US breeding programs, the Arkansas Agricultural Experiment Station released the soybean lines R10‐5086 (Reg. No. GP‐408, PI 682131) and R11‐6870 (Reg. No. GP‐409, PI 682132) in February of 2017 as conventional maturity group (MG) V germplasm because of their high yield potential and exotic germplasm in the pedigree. R10‐5086 has 25% of its pedigree from PI 290126 B and R11‐6870 carries 25% of PI 594208. R10‐5086 and R11‐6870 were evaluated in 49 and 31 locations, respectively, in Arkansas and other southern states including Tennessee, Kansas, Missouri, Mississippi, North Carolina, and Virginia, from 2012 to 2016. Based on results from the United Soybean Board Southern Diversity Yield Trials, the USDA preliminary MG V test, and the University of Arkansas Soybean Breeding Program yield trials, R10‐5086 yielded between 3848 and 4373 kg ha−1 (99 to 103% of commercial check yield). Similarly, R11‐6870 yielded between 4134 and 4467 kg ha−1 (101 to 106% of commercial check yield). Because of the high‐yield potential, wide adaptability, and good agronomic characteristics, such as lodging and shattering resistance, R10‐5086 and R11‐6870 can be used as parents to introduce novel “yield” genes in any public or private breeding program for cultivar development.