芸薹属种与变种间杂交后代回交亲和性的研究  

Studies on the Compatibility of Backcrosses of Interspecific and Inter Varietal Hybrids in Brassica

作　　者：祝朋芳[1] 王兴[1] 张健[1] 魏毓棠[2] 

机构地区：[1]沈阳农业大学林学院,沈阳110866 [2]沈阳农业大学园艺学院,沈阳110866

出　　处：《中国农学通报》2011年第10期149-152,共4页Chinese Agricultural Science Bulletin

基　　金：辽宁省教育厅科学技术研究项目"羽衣甘蓝雄性不育系选育的研究"(2008664)

摘　　要：试验分别对"胞质不育大白菜×羽衣甘蓝"和"胞质不育结球甘蓝×羽衣甘蓝"进行了连续3代的回交亲和性的对比研究。结果表明,在"胞质不育大白菜×羽衣甘蓝"的回交进程中,BC2亲和指数为2.45,仍有较强的生殖隔离,但连续回交到BC4时,亲和指数提高到6.17,不亲和性已逐步被克服。在"胞质不育结球甘蓝×羽衣甘蓝"的回交进程中,BC2、BC3和BC4之间的回交亲和指数分别为6.20、6.23和6.27,方差分析表明差异不显著,符合羽衣甘蓝与结球甘蓝是变种间关系。2个回交转育组合比较,发现种间组合"大白菜×羽衣甘蓝"回交到BC4时亲和性已经接近变种间组合"结球甘蓝×羽衣甘蓝"。The paper studied on compatibilities of three backcross generations between interspecific hybrid,which was from CMSBrassica camperstris ssp.Pekinensis ×Brassica oleracea var.acephala f.tricolor,and inter varietal hybrid,which was from CMSB.oleracea var.capitata ×B.oleracea var.acephala f.tricolor.The results showed that there was segregation betweenB.camperstris ssp.Pekinensis andB.oleracea var.acephala f.tricolor in BC2 with a low compatible index of 2.45,but it had been overcome step by step until BC4 with a high compatible index of 6.17.While,there were no segregations betweenB.oleracea andB.oleracea var.acephala f.tricolor in BC2,BC3 and BC4 with compatible indexes of 6.20、6.23 and 6.27,respectively.The compatibility ofB.camperstris ssp.Pekinensis ×B.oleracea var.acephala f.tricolor closed toB.oleracea var.capitata ×B.oleracea var.acephala f.tricolor in BC4.

关 键 词：芸薹属 羽衣甘蓝 细胞质雄性不育 回交 亲和性 

分 类 号：S635.9[农业科学—蔬菜学]