吉林农业大学学报Issue(6)：656-661,6.
玉米外引自交系及改良系穗部性状的遗传分析
Genetic Analysis of Ear Traits of Exotic and Improved Maize Inbred Lines
摘要
Abstract
Seven exotic and improved maize inbred lines were crossed with six elite Chinese inbred lines and 42 combinations were produced according to NCⅡ design.Eight main ear traits were genetically ana-lyzed.The results showed that inbred lines 7923,6WC and J1782 had high combining ability,which were good lines;combining ability and yield correlation analysis showed that in maize breeding,GCA was more important than SCA;we selected 7 high-yield combinations through heterosis analysis,like 7923 × 8-F349;broad heritability and narrow heritability of ear length,ear diameter and ear row number were high,so they could be selected in early generation;narrow heritability of kernel length,length of bare tip,seed ratio and hundred-grain weight was low,and they are easy to be impacted by environment,so they should not be selected in early generation.关键词
玉米/自交系/改良系/配合力/遗传力Key words
maize/inbred line/improved line/combining ability/heritability分类
农业科技引用本文复制引用
郭琦,李继竹,杨伟光,尹日成..玉米外引自交系及改良系穗部性状的遗传分析[J].吉林农业大学学报,2013,(6):656-661,6.基金项目
农业部“948”项目 （）
