玉米分蘖率的遗传研究  

Genetic Study of Tillering Rate in Maize

作　　者：李忠南[1] 王越人[2] 李光发[2] 李福林[2] 张建[2] 

机构地区：[1]吉林农业大学,长春130118 [2]通化市农业科学院,吉林梅河口135007

出　　处：《玉米科学》2016年第2期15-21,共7页Journal of Maize Sciences

摘　　要：以ph4cv(高分蘖率)×A6(低分蘖率)DH群体分蘖率为研究对象,应用主基因+多基因DH群体遗传模型及混合分布方法,研究玉米分蘖率的遗传特性,并对近缘群体、杂优群体和自交系群体分蘖率进行推导分析,利用六世代(ph6wc×ph4cv)分蘖率进行验证。结果表明,玉米分蘖率是由4对主基因和微效多基因共同决定的,主基因遗传力为95.6%,为加性-显性-上位性模型。主基因决定玉米分蘖率的稳定性,微效多基因是否表现及表现大小决定该群体的分蘖率。The genetic analysis of PH4CV（high tillering rate）×A6（low tillering rate） DH population tiller ratewere conducted by mixed major gene plus polygene gene DH population genetic model and mixed distribution meth-od. The tillering rate of the closely related groups, the heterosis group and the inbred line were analyzed, the six gen-eration（ph6wc×ph4cv, P1, P2, F1, B1, B2, F2） tillering rate was validated. The results showed that the tillering rate ofmaize was determined by 4 of the major genes and the genes of the micro-effect. The heritability of the major genewas 95.6%, which was the additive dominant super significant model. The main genes determine the stability of thetillering rate of maize. The performance of the micro- effect genes determined the tillering rate of the group.

关 键 词：玉米 分蘖率 主基因 微效多基因 

分 类 号：S513.032[农业科学—作物学]