大豆粒形的主基因＋多基因混合遗传  

Mixed Major-gene Plus Polygenes Inheritance Analysis for Seed Length and Width in Soybean

作　　者：李河南[1] 汪霞[1] 李广军[1,2] 程利国[1] 何小红[1] 张国政[1] 章元明[1] 

机构地区：[1]南京农业大学作物遗传与种质创新国家重点实验室,国家大豆改良中心,江苏南京210095 [2]临沂师范学院,山东临沂276005

出　　处：《大豆科学》2009年第1期16-20,共5页Soybean Science

基　　金：教育部新世纪优秀人才支持计划资助项目(NCET-05-489);国家自然科学基金资助项目(30470998);江苏省自然科学基金资助项目(BK2008335);高等学校博士点基金资助项目(20060307008);教育部“111”资助项目(B08025)

摘　　要：大豆粒形直接与产量相关,对其粒长、粒宽的遗传规律分析可以为其数量性状基因座定位、分子标记辅助选择育种和基因克隆奠定基础。调查大豆杂交组合溧水中子黄豆(P1)×南农493-1(P2)正反交的P1、P2、F1和F2:3四个世代的粒长和粒宽的表型资料,运用四个世代联合的主基因+多基因混合遗传分析方法,对这两个性状分别进行了遗传分析。结果表明:正反交杂种F1粒长和粒宽有显著差异,存在母性效应;粒长性状受一对加性-显性主基因和加性-显性-上位性多基因共同控制;粒宽受多基因控制。Seed length and width were related to soybean yield. The inheritance for the seed length and width may provide the foundation for mapping of quantitative trait loci（ QTL）, marker assisted selection and gene done. In this article, P1 and P2, F1 and F2：3 populations derived from the direct and reciprocal crosses between Lishuizhongzihuang and Nannong 493-1 were used to investigate the inheritance for the two traits mentioned above by using joint segregation analysis approach. The results showed that there were significant differences between the direct and reciprocal cross F1 for seed length and width, and seed length was controlled by one major gene with additive- dominant effects plus polygenes with additive-dominanceepistatic effects while polygenes with additive effect was principal in seed width.

关 键 词：粒长 粒宽 主基因+多基因混合遗传 

分 类 号：S565.1[农业科学—作物学]