玉米株高和穗位高的全基因组关联分析

以580份遗传多样性丰富的玉米自交系为关联群体，利用分布于全基因组的31 826个单核苷酸多态性(Single Nucleotide Polymorphisms，SNPs)分别对株高和穗位高性状3年表型值及BLUE(Best Linear Unbiased Estimate)值进行全基因组关联分析。结果表明，4个环境下共检测到58个显著性SNPs，共定位的SNPs有6个，其中3个与株高显著关联，4个与穗位高显著关联。在共定位显著标记440 kb范围内，共检测到76个关联基因，其中66个有基因描述，53个基因在GO(Gene Ontology)富集分析中得到分类，可归类到20类生物过程、10类分子功能以及8类细胞组成。综合基因功能注释和GO富集分析结果，预测了7个可能与株高和穗位高性状有关的候选基因。

Genome Wide Association Analysis of Plant Height and Ear Height in Maize

Five hundred and eighty maize inbred lines with rich genetic diversity were used as the association population, and 31 826 SNPs distributed in the whole genome were used to analyze the phenotypic values and BLUE(Best Linear Unbiased Estimate) values of plant height and ear height traits at 3 years separately. The results showed that 58 significant SNPs were detected in four environments, with 6 colocalized SNPs, of which 3 were significantly associated with plant height and distributed on chromosomes 3, 5 and 7; and 4 were significantly correlated with ear height. Within 440 kb range of the colocalized significant SNPs, a total of 76 associated genes were detected, of which 66 were described, and 53 genes were classified in GO enrichment analysis, which could be categorized into 20 biological processes, 10 molecular functions and 8 cellular components. Based on the comprehensive gene functional annotation and go enrichment analysis results, 7 candidate genes that may be related to plant height and ear height traits were predicted.