几个常用玉米自交系优势群划分的初步研究  

Preliminary Study on Genetic Distance of Ten Elite Inbred Lines in Maize

作　　者：宋锡章[1] 苏俊[1] 钟占贵[1] 李春霞[1] 张瑞英[1] 龚世琛 张坪[1] 

机构地区：[1]黑龙江省农业科学院玉米研究中心

出　　处：《玉米科学》1996年第2期11-14,共4页Journal of Maize Sciences

摘　　要：对１０个常用玉米自交系进行完全双列杂交，以杂种优势距离为指标进行聚类分析．结果表明，１０个自交系可划分为５类，即８１８、３３０为一类群；Ｍｏ１７、龙抗１１、龙抗９２为一类群；系１４、龙抗３１Ｂ、龙抗５６Ａ为一类群；８１１２和黄早四各成一类。各类群间有着不同的遗传背景，类群间平均优势值较高，类群内优势值较低．Heterozygosis distance of yield character in 45 progenies were evaluated and cluster analysed in a complete diallel crossing with 10 elite inbred lines in 1994 in Harbin.The result showed that five groups which have different genetic background were divided according to the hybrid vigor distance. The value of average hybrid vigor was higher in different group and lower in the same one.

关 键 词：玉米 自交系 杂种优势 

分 类 号：S513.035.1[农业科学—作物学]