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Registration of Stout-Rps1k Soybean Germplasm Line

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Stout-Rps1k soybean [Glycine max (L.) Merr.]) (Reg. No. GP-360, PI 644024) germplasm line was developed jointly by the USDA-ARS and the Ohio Agricultural Research and Development Center in Wooster, OH. It was released in October 2006 because it had the Rps1k gene for race-specific resistance to Phytophthora root and stem rot (caused by Phytophthora sojae, M.J. Kaufmann and J.W. Gerdemann) in the semidwarf cultivar Stout. Stout-Rps1k, a maturity group III (RM 3.3) germplasm, was developed by backcrossing the Rps1k gene from cultivar Sprite 87 into Stout. BC5-derived lines homozygous for the Rps1k gene were bulked and evaluated for agronomic performance in local and regional tests. Agronomic performance of Stout-Rps1k was similar to the recurrent parent Stout. The Rps1k gene conditions resistance against a wider range of P. sojae populations in the north-central soybean growing region of the United States than the Rps1a gene. Thus, Stout-Rps1k should be useful for breeders and researchers interested in developing new soybean lines with broad resistance to P. sojae populations and specific adaptation to high-yield environments.
Mian, M. A. Rouf , Cooper, Richard L. , Dorrance, Anne E.
Glycine max , soybeans , germplasm , plant genetic resources , germplasm releases , Phytophthora sojae , plant pathogenic fungi , plant rots , disease resistance , genetic resistance , plant adaptation , Ohio
p. 255-257.
Includes references
Journal of plant registrations 2008 Sept., v. 2, no. 3
Journal Articles, USDA Authors, Peer-Reviewed
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