Zhang Yong, Wan Jiyu, He Lian, Lan Hai, Li Lujiang
Maize Research Institute, Sichuan Agricultural University/Key Laboratory of Crop Genetic Resources and Improvement, Ministry of Education, Chengdu 611130, Sichuan, China.
Plants (Basel). 2019 Oct 21;8(10):432. doi: 10.3390/plants8100432.
Drastic changes in plant height (PH) are observed when maize adapt to a higher plant density. Most importantly, PH is an important factor affecting maize yield. Although the genetic basis of PH has been extensively studied using different populations during the past decades, genetic basis remains unclear in the F1 population, which was a widely used population in production. In this study, a genome-wide association study (GWAS) was conducted using an F1 population consisting of 300 maize hybrids with 17,652 single nucleotide polymorphisms (SNPs) makers to identify candidate genes for controlling PH. A total of nine significant SNPs makers and two candidate genes were identified for PH. The candidate genes, Zm00001d018617 and Zm00001d023659, were the genes most probable to be involved in the development of PH. Our results provide new insights into the genetic basis of PH in maize.
当玉米适应更高的种植密度时，会观察到株高（PH）发生剧烈变化。最重要的是，株高是影响玉米产量的一个重要因素。尽管在过去几十年中已使用不同群体对株高的遗传基础进行了广泛研究，但在生产中广泛使用的F1群体中，其遗传基础仍不清楚。在本研究中，利用一个由300个玉米杂交种组成的F1群体，通过17652个单核苷酸多态性（SNP）标记进行全基因组关联研究（GWAS），以鉴定控制株高的候选基因。共鉴定出9个与株高显著相关的SNP标记和2个候选基因。候选基因Zm00001d018617和Zm00001d023659最有可能参与株高的发育。我们的研究结果为玉米株高的遗传基础提供了新的见解。
