A spring wheat nested associated mapping (NAM) population, KUWNSr (Kenyan and U.S. wheat nested association mapping population for stem rust resistance), was developed at the University of Minnesota, St. Paul, MN, USA. KUWNSr (Reg. no. MP‐12, NSL 533796 MAP, experimental designation SrNAM) was primarily developed to genetically characterize stem rust resistance as the 10 male parents—nine Kenyan and one University of Minnesota wheat cultivars—exhibited medium to high adult plant resistance to African and North American races of the stem rust pathogen (Puccinia graminis f. sp. tritici). Each parent was crossed to the stem rust susceptible line LMPG‐6, and populations were developed via single‐seed descent. Aggregately, the resulting 10 populations, consisting of 852 recombinant inbred lines, formed the KUWNSr population. KUWNSr was evaluated in four environments: two in the United States and one each in Kenya and South Africa. A high‐density genetic map was developed using genotyping‐by‐sequencing, resulting in 11,221 single nucleotide polymorphism markers mapped to all 21 chromosomes. In addition to stem rust resistance, the population segregates for other disease resistance traits such as leaf and stripe rust and agronomic traits such as plant height, spike morphology, and days to heading. As one of the first wheat NAM populations developed, KUWNSr is a valuable resource for understanding the genetic architecture of wheat growth and development, morphology, and resistance or tolerance to biotic and abiotic stresses.

中文翻译：

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小麦茎锈病嵌套关联图谱种群KUWNSr的注册

在明尼苏达州圣保罗市的明尼苏达大学开发了一种春小麦巢式关联作图（NAM）种群KUWNSr（针对茎杆抗锈病的肯尼亚和美国小麦巢式关联作图种群）。KUWNSr（注册号MP-12，NSL 533796 MAP，实验编号SrNAM）的主要开发用途是通过遗传鉴定茎锈病抗性，因为10个雄性亲本（9个肯尼亚人和一个明尼苏达大学的小麦品种）表现出中等至高的成年植物抗性在秆锈病病菌的非洲和北美的比赛（禾柄锈菌楼属小麦）。每个亲本都与易受茎锈病影响的系LMPG-6杂交，并通过单种子后代形成种群。总的来说，由852个重组自交系组成的10个种群形成了KUWNSr种群。在四种环境中对KUWNSr进行了评估：美国有两种，肯尼亚和南非各有一种。使用基因分型测序技术开发了一个高密度遗传图谱，结果将11,221个单核苷酸多态性标记映射到所有21条染色体。除抗茎锈病外，种群还分离出其他抗病性状，例如叶锈病和条锈病，以及农艺性状，例如株高，穗状形态和抽穗期。作为最早的小麦NAM种群之一，