14个玉米自交系配合力与遗传力分析  

Combining Ability and Hereditary Capacity of 14 Maize Inbred Lines

作　　者：杨人震[1] 卢和顶[1] 薛珠政[1] 林建新[1] 卢济事[1] 

机构地区：[1]福建省农业科学院耕作轮作研究所

出　　处：《福建农业学报》1998年第2期6-10,共5页Fujian Journal of Agricultural Sciences

摘　　要：按Ｐ１×Ｐ２不完全双列杂交设计，分析了１４个玉米自交系及其组配的２４个组合的株高、穗位、穗长、穗粗、穗行数、行粒数、千粒重、产量等主要数量性状的配合力，从而筛选出５个优良自交系和６个强优势组合；配合力基因型方差与遗传力估算结果表明，大部分性状的加性方差明显大于显性方差，一般配合力表现出比特殊配合力较大的遗传份量，为此在选配组合时应注重选择一般配合力高的自交系做亲本。The combining ability for main quantitative characters of 14 maize inbred lines and 24 combinations were analysed in P1×P2 incomplete diallel crossing design,and 5 excellent inbred lines and 6 strong superiority combinations were selected from them.The results of combining ability in genotypic variance and hereditary estimation showed that additive variance of most characters were higher than their dominant variance,heritability of general combining ability was higher than that of special combining ability,so inbred lines which had high general combining ability should be selected as parent materials.

关 键 词：玉米 自交系 一般配合力 特殊配合力 遗传力 

分 类 号：S513.032[农业科学—作物学]