Deng Ce, Li Huimin, Li Zhimin, Tian Zhiqiang, Chen Jiafa, Chen Gengshen, Zhang Xuecai, Ding Junqiang, Chang Yuxiao
College of Agronomy, Henan Agricultural University, Zhengzhou, 450002, China.
College of Life Science, Henan Agricultural University, Zhengzhou, 450002, China.
J Appl Genet. 2019 May;60(2):147-150. doi: 10.1007/s13353-019-00488-w. Epub 2019 Mar 5.
Southern corn rust (SCR) is a prevalent foliar disease in maize. Deployment of resistant cultivars is an effective way to control SCR. In this study, resistance to SCR was evaluated in a BCRIL population comprising 118 lines grown under three different field conditions. Combined with a genetic map constructed from 1635 SNP markers obtained from the maize 9.4 K SNP Affymetrix® Axiom® Genotyping Array, single quantitative trait loci (QTL) were mapped on chromosomes 4, 9, and 10, respectively. The QTL on chromosome 4 (qSCR4.08) and chromosome 9 (qSCR9.04) were stable across multiple environments, and each explained more than 10% of the phenotypic variation. The stable QTL detected could be desirable sources of SCR resistance in maize-breeding programs.
南方玉米锈病（SCR）是玉米中一种普遍的叶部病害。部署抗性品种是控制SCR的有效方法。在本研究中，在由118个品系组成的BCRIL群体中评估了对SCR的抗性，这些品系在三种不同的田间条件下种植。结合从玉米9.4K SNP Affymetrix® Axiom®基因分型阵列获得的1635个SNP标记构建的遗传图谱，分别在第4、9和10号染色体上定位了单个数量性状位点（QTL）。第4号染色体上的QTL（qSCR4.08）和第9号染色体上的QTL（qSCR9.04）在多个环境中均稳定，且每个QTL解释的表型变异均超过10%。检测到的稳定QTL可能是玉米育种计划中SCR抗性的理想来源。
