Registration of G08PR‐394 and G09PR‐80 Soybean Germplasm Lines with Diverse Pedigrees

Abstract

Increasing soybean [Glycine max (L.) Merr.] yield is a major goal of soybean breeding programs. Expanding the genetic diversity of the elite U.S. soybean gene pool is essential to maintain or increase the current rate of genetic gain for seed yield due to the current narrow genetic base of existing elite soybean germplasm. To increase the genetic diversity of southern U.S. soybean cultivars, two soybean lines—G08PR‐394 (Reg. No. GP‐380, PI 667741) and G09PR‐80 (Reg. No. GP‐381, PI 667742)—were developed and released by the University of Georgia agricultural experiment stations. G08PR‐394 is an F5 plant selection from ‘5601T’ × R01‐3637F and has 25% of its pedigree from a Japanese cultivar Misuzu Daizu (PI 423912). G08PR‐394 is a maturity group VI line that yielded 2, 4, and 20% greater than the seed yield of check genotypes: N6202, ‘Young’ and ‘N6201’. G09PR‐80 is an F5 plant selection from the 5601T × PI 157440 cross having 50% of its pedigree from a South Korean accession (PI 157440). G09PR‐80 is a maturity group V line that produced 95, 93, 87, and 84% of the seed yield of the check genotypes: ‘Dillon’, ‘Hutcheson’, JTN‐5503, and its elite parent 5601T. G09PR‐80 is resistant to bacterial pustule [caused by Xanthomonas campestris pv. glycines (Nakano) Dye] and southern root‐knot nematode [Meloidogyne incognita (Kofoid & White) Chitwood]. Based on their broad diversity and favorable yield potential, these lines could be used as parents to enhance genetic diversity and develop commercial cultivars.