Abstract: Abstract: An additive-dominance-maternal genetic model with genotype by environment interactions by Zhu Jun was applied to analyze genetic main effects and genotype by environment interactions for kernel rate in maize. The results indicated that maize kernel rate was mainly controlled by dominance effects, and secondly by additive effects. At the same time, Genotype×environment effects had significant influence on different genetic systems of kernel rate, such as additive×environment, dominance×environment, maternal×environment. Environment has great influence on selection effect for kernel rate, it is suitable to select on later generation. In the maize breeding, the maize parent was selected to cross according to predicted genetic effects of kernel rate of maize parents under different environments, in order to breed new hybrids for different or special area, then enhance breeding effect efficiency for kernel rate trait.