江西农业学报2016，Vol.28Issue(2)：35-38,4.
甘蓝型油菜亲本遗传差异与杂种优势表现
Genetic Diversity of Pa rents and Heterotic Performance in Brassica napus L.
摘要
Abstract
Forty cross combinations of four genic male sterile lines and 10 restorer lines from different origins were obtained according to NC Ⅱmethod, the relationship analysis between parental genetic diversity and heterotic performances by using SSR molecular markers.The results showed that the parental molecular genetic distance ( PMGD) was highly and positively correlated compared with the control heterosis, but with a small coefficient of determination, there was no significant correlation between PMGD and transgressive heterosis, indicating that PMGD was not necessarily reliable for predicting the heterosis of their hybrids. Three groups were obtained according to cluster analysis on the 14 parents, the heterosis of cross combinations between groups was much stronger than that of in groups, suggesting that the high heterotic patterns could be obtained by crossing in between groups.关键词
甘蓝型油菜/亲本/分子遗传距离/杂种优势/聚类分析Key words
Brassica napus/Molecular genetic distance/Heterosis/Cluster analysis分类
农业科技引用本文复制引用
陈锋,张洁夫,张维,付三雄,陈松..甘蓝型油菜亲本遗传差异与杂种优势表现[J].江西农业学报,2016,28(2):35-38,4.基金项目
江苏省科技支撑计划（BE2013435）；江苏省农业三新工程［SXGC（2014）301］。 （）
