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ARS Home » Southeast Area » Raleigh, North Carolina » Soybean and Nitrogen Fixation Research » Research » Publications at this Location » Publication #364850

Research Project: Exploiting Genetic Diversity through Genomics, Plant Physiology, and Plant Breeding to Increase Competitiveness of U.S. Soybeans in Global Markets

Location: Soybean and Nitrogen Fixation Research

Title: Registration of R10-5086 and R11-6870 soybean germplasm lines with exotic pedigree

item MANJARREZ-SANDOVAL, PEDRO - University Of Arkansas
item CHEN, PENGYIN - University Of Missouri
item FLOREZ-PALACIOS, LILIANA - University Of Arkansas
item ORAZALY, MOLDIR - University Of Arkansas
item WU, CHENGJUN - (NCE, CECR)networks Of Centres Of Exellence Of Canada, Centres Of Excellence For Commercilization A
item Carter Jr, Thomas

Submitted to: Journal of Plant Registrations
Publication Type: Peer Reviewed Journal
Publication Acceptance Date: 5/24/2017
Publication Date: 9/28/2017
Citation: Manjarrez-Sandoval, P., Chen, P., Florez-Palacios, L., Orazaly, M., Wu, C., Carter Jr, T.E. 2017. Registration of R10-5086 and R11-6870 soybean germplasm lines with exotic pedigree. Journal of Plant Registrations. 12(1):118-123.

Interpretive Summary: Despite soybean’s importance to the U.S. economy, production stability can be jeopardized by depletion of genetic diversity in soy breeding programs. This depletion reduces breeding progress and imposes yield ceilings for the farmer. An important antidote to this agricultural challenge is to replenish lost diversity in the US soybean crop using exotic novel Asian soybean germplasm. In this study we used exotic Asian soybean types from Japan and China (PI 290126 B and PI 594208) to develop new Maturity Group V breeding stocks R10-5086 and R11-6870. These new stocks are high yielding and easily used by commercial breeders in their breeding programs. The novel diversity introduced by these materials into the US breeding pool holds the promise of boosting yields of new varieties derived from them. These new stocks have wide adaptability and good agronomic characteristics, such as lodging and shattering resistance.

Technical 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.