USDA‐N6004 (Reg. no. GP‐441, PI 692264) is a 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 the 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 and is the first U.S. release derived from this exotic accession, as 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’. Over 35 test environments of the USDA Uniform Soybean Tests–Southern States (Uniform Tests), USDA‐N6004 yielded 99% of NC‐Roy, matured 2 d earlier, and exhibited 3.9 g greater 100 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 NC‐ Roy (its adapted parent) in the Uniform Tests. However, meal protein percentage of USDA‐N6004 was above the industry minimum standard of 48%. Thus, this germplasm should prove valuable as parental stock in applied breeding. This soybean release is among the first in the United States developed via a combination of bulk breeding and pedigree selection.

中文翻译：

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来自日本栽培种Blue Side的USDA‐N6004大豆种质的注册

USDA-N6004（注册号GP-441，PI 692264）是常规的晚熟组（MG）VI大豆[ Glycine max（L.）Merr。]种质的发展是为了增加北美应用大豆育种的遗传基础的多样性。该种质由USDA‐ARS和北卡罗莱纳州农业研究服务局于2019年9月发布。USDA‐N6004的血统书中有50％可以追溯到大型种子日本蓝变种Blue Side，并且是美国第一个从这种异国添加物中获得的版本，因为“蓝边”不是美国大豆历史悠久的遗传基础的一部分。USDA-N6004的收益潜力和到期日与其改编的母公司“ NC-Roy”相似。USDA-N6004在超过35个USDA均匀大豆试验－南部州（均匀试验）的测试环境中，产生了NC-Roy的99％，提前2天成熟，并且比NC-Roy的100粒重高3.9 g。联合大豆委员会南方生物多样性产量试验的23种环境中，USDA-N6004的NC-Roy产量为97％，精英品种NC-Dilday产量为91％。在统一测试中，释放的种子蛋白和粗粉蛋白含量较低，而种子油含量则高于NC-Roy（其亲本）。但是，USDA-N6004的粕粉百分比高于行业最低标准48％。因此，该种质应被证明可作为应用育种中的亲本。这种大豆释放是通过批量育种和系谱选择相结合而在美国开发的第一批大豆。USDA-N6004的粗蛋白含量高于行业最低标准48％。因此，该种质应被证明可作为应用育种中的亲本。这种大豆释放是通过批量育种和系谱选择相结合而在美国开发的第一批大豆。USDA-N6004的粗蛋白含量高于行业最低标准48％。因此，该种质应被证明可作为应用育种中的亲本。这种大豆释放是通过批量育种和系谱选择相结合而在美国开发的第一批大豆。