Genetic Analysis of Plant-Type Characters in Maize(Zea Mays L.)by Using Joint Analysis of Multiple Generations

In this paper,the genetic models of 5 plant-type characters in maize were studied by using joint analysis of multiple-generations and genetic parameters of the model were estimated as well.The result showed that an additive-dominance-epistasis polygenes model was suitable for plant height,leaf area,branch No.of tassel,which had the negative super-dominant. An additive major gene+additive-dominance polygenes model was suitable for ear height and leaf shape coefficient,which hadn't dominant effect for major gene and epistasis effect for minor genes.Ear height had the highest major gene heritability(46.51%) in B_2 and the highest minor genes heritability(46.71%) in B_1.Leaf shape coefficient had the highest major gene heritability (36.76%) in F_2 and the highest minor genes heritability(26.31%) in B_1.