玉米穗高系数遗传主效应及与环境互作效应分析

Analysis of Genetic Effect and Genotype by Environment of Ear Height Coefficient in Maize

采用朱军提出的包括基因型×环境互作效应的加性-显性-母体遗传模型(ADM模型)分析方法,研究玉米穗高系数性状遗传主效应及其与环境互作遗传效应。结果表明:玉米穗高系数受加性效应、显性效应、母体效应遗传体系共同控制,同时还受显性×环境互作效应、母体×环境互作效应等不同遗传控制体系基因型×环境互作效应显著影响。对穗高系数性状的选择效果受环境影响较大,宜在较晚世代进行选择。育种中根据亲本穗高系数在不同环境中遗传效应预测值组配杂交组合,提高穗高系数育种效率。

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 ear height coefficient in maize. The results indicated that maize ear height coefficient was controlled by additive effects, dominance effects, and maternal effects. At the same time, Genotypexenvironment effects had significant influence on different genetic systems of plant height such as dominancexenvironment, maternalxenvironment. Environment has great influence on selection effect for ear height coefficient, it is suitable to select on later generation. In the maize plant type breeding, the maize was selected to cross according to predicted genetic effects of ear height coefficient of maize parents under different environments, then enhance breeding efficiency for the ear height coefficient.