华北农学报Issue(z1)：74-78,5.
转Bt基因抗虫棉品种间杂种优势及配合力研究
Study on Heterosis and Combining Ability of Transgenic Bt Cotton
摘要
Abstract
Crosses were made by Griffing4 design,using 6 transgenic Bt cotton varieties as parents ,to analyze heterosis of F1 hybrids and the combining ability from 16 traits.F1 hybrids showed an appreciable heterosis .13 of 16 characters measured had mid-parent heterosis ,5 showed high-parent heterosis and 14 expressed competitive hetero-sis.Path analysis indicated that plant height , single boll weight and lint percentage contributed greatly to the in-crease of output of the yield components .Combining ability analysis showed that the additive effects were predomi-nant in F1 traits,but non-additive effects of seed cotton yield ,lint yield,number of fruit branches ,single boll weight , lint percentage,rate of rotten boll,fiber strength and fiber length were also very strong .Jimian 616 and Hengmian 4 were high yied parents and Jimian 228 was a good quality parent with high genetic combining ability .8 excellent combinations were selected from 15 F1 hybrids,3 of which were high yield P1 ×P2,P4 ×P5,P1 ×P4,3 were good quality P5 ×P6,P2 ×P5,P3 ×P4 and 2 were high yield and good quality P2 ×P6,P3 ×P5.关键词
转Bt基因抗虫棉/杂种优势/配合力Key words
Transgenic Bt cotton/Heterosis/Combining ability分类
农业科技引用本文复制引用
戴茂华,刘丽英,吴振良..转Bt基因抗虫棉品种间杂种优势及配合力研究[J].华北农学报,2013,(z1):74-78,5.基金项目
国家科技支撑项目协作子课题 （）
