玉米重组群体果穗性状的遗传潜势与杂种优势研究  

Hybrid Heterosis and Genetic Potential of Ear Characters of Recombined Population on Maize

作　　者：张兴端 晏庆九 霍仕平 张健 许明陆 向振凡 

机构地区：[1]重庆三峡农业科学研究所,重庆万州404001

出　　处：《玉米科学》2003年第4期21-24,共4页Journal of Maize Sciences

基　　金：重庆市"十五"种子创新工程项目部分内容。

摘　　要：选用含有Reid、Lancaster及国内地方种血缘的自交系和地方品种作为基础材料,按血缘关系分别合成3个群体,再进行群体间杂交,以3个群体和6个群体间杂交组合为试验材料,探讨群体内遗传潜力和群体间杂种优势。结果表明,穗长、穗粗、穗行数、行粒数、百粒重和子粒产量6个果穗性状在群体内遗传差异极显著,且群体间杂交后这6个性状的杂种优势均为正值,依次为子粒产量>行粒数>百粒重>穗长>穗粗>穗行数。综合这6个果穗性状表现,以D×R、R×L、R×D和L×R的总优势较强。Using inbred lines and local variety of Reid(R.),Lancaster(L.)and domestic germplasm(D.)as basic materials,3populations were combined according to their pedigree relationship.With3populations and6inter-op-ulation crosses as study materials,the genetic potential and hybrid heterosis were studied.The result showed that it was significant of the hereditary variation of ear length,ear diameter,rows of ear,grains per row,100 - grain weight and grain yield6characters in populations,and the heterosis values were positive of these6characters of inter - pop-ulation crosses.The order of the heterosis values from big to small was grain yield,grain per row,100 - grain weight,ear length,ear diameter and rows per ear.Comprehensive analysed the performance of the6characters,the crosses of strong total heterosis were D×R,R×L,R×D and L×R.

关 键 词：玉米 自交系 地方品种 血缘关系 群体 杂交 遗传潜力 性状 杂种优势 

分 类 号：S513.032[农业科学—作物学]