Genome wide association analysis for yield related traits in maize

Using 291 excellent maize inbred lines as materials, six yield related traits of maize, including grain yield per plant (GYP), grain length (KL), grain width (KW), kernel number per row (KNR), 100 kernel weight (HKW) and tassel branch number (TBN) were investigated in Jinan, in 2017, 2018 and 2019. The average values of six environments were taken as the phenotypic data of yield related traits, and they were statistically analyzed. Based on 38,683 high-quality SNP markers in the whole genome of the association panel, the MLM with PCA model was used for genome-wide association analysis to obtain significantly associated SNP sites, and candidate genes were predicted based on the LD interval sequence of these significant associated SNPs, and the functions of candidate genes were annotated.