Analysis of Genetic Effect and Genetype by Environment of Ear Height on Maize

An additive-dominance-maternal genetic model with genotype by environment interactions was ap-plied to analyze genetic main effects and genotype by environment interactions for ear height on maize.The results in-dicated that maize ear height 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 ear height,such as dominance×environment,maternal×environment.Environment had great influence on selection effect for ear height,it was suitable to select on later generation.In the maize plant type breeding,the maize parent was selected to cross according to predicted genetic effects of ear height of maize parents under different environments,and then enhance breeding efficiency for ear height trait.