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ACCESSIONPLANT NAMETAXONOMYORIGINGENEBANKIMAGEAVAILABILITYRECEIVEDSOURCE TYPESOURCE DATECOLLECTION SITECOORDINATESELEVATIONHABITATIMPROVEMENT LEVELNARRATIVE
0PI 692264USDA-N6004Glycine max (L.) Merr. North Carolina, United StatesSOY2019DEVELOPEDBreeding materialUSDA-N6004 (Reg. No. CV-... , Pl XXX) is a new conventional, late maturity group (MG) VI soybean [Glycine max (L.) Merr.] germplasm developed to increase the diversity of the genetic base of applied soybean breeding in North America. This germplasm was released by USDA-ARS and the North Carolina Agricultural Research Service in September 2019. USDA-N6004 traces 50% of its pedigree to the large-seeded Japanese cultivar Blue Side (Pl 632950) and is the first U.S. release derived from this exotic accession. Blue Side is not a part of the historic genetic base of U.S. soybean. USDA-N6004 has a yield potential and maturity similar to that of its adapted parent, NC-Roy (Pl 617045). Over 35 test environments of the USDA Uniform Soybean Tests­ Southern States (Uniform Tests), USDA-N6004 yielded 99% of NC-Roy, matured 2 days earlier, exhibited 3.9 g greater seed weight than NC-Roy. Over 23 environments of the United Soybean Board Southern Diversity Yield Trials, USDA-N6004 yielded 97% of NC-Roy and 91 % of the elite cultivar NC-Dilday. Seed protein and estimated meal protein content of the release were lower and seed oil content was higher than the adapted parent in the Uniform Tests. However, meal protein percent was above the industry minimum standard of 48%. Thus, this germ plasm release should prove valuable as parental stock in applied breeding. This F4-derived soybean release is among the first in the USA to be developed via a combination of bulk breeding and pedigree selection.2098642PI 692264