论文部分内容阅读
利用生育期不同的转Bt基因抗虫陆地棉和非抗虫陆地棉进行品种间杂交 ,配制成中熟组合(中棉所19×中棉所32)和早熟组合 (中棉所24×中棉所30)的6个世代 (P1、P2、F1、F2、B1、B2)。应用多元分析法 ,对株高、产量和麦克隆值等12个性状进行了遗传分析。结果表明,株高、铃数和3个纤维品质性状由加性及上位性效应控制 ,不存在显性效应 ;衣指仅有上位性效应控制 ;子、皮棉产量主要由显性效应、加性效应和不同程度的上位性效应控制 ,产量性状和3个纤维品质性状均不存在显性×显性效应(l) ;其他性状的基因效应则因组合的不同而有较大差异。皮棉产量和铃重的基因效应表现为超显性。在本试验中超亲优势共有6种来源 ,即｜i｜>d、h>d +i、l>d +i、h +l>i、h>d和h +l>d +i ,其中显性效应(h)以及加性×加性效应(i)是杂种优势的主要来源
Bt transgenic cotton and non-insect-resistant Upland cotton with different growth stages were used to make the middle-aged and middle-aged cotton combination (Zhongxianxian 19 × Zhongmiange 32) and early-maturity combination Six generations (P1, P2, F1, F2, B1, B2) of the same genus. By using multivariate analysis, 12 traits such as plant height, yield and micronaire were analyzed. The results showed that the plant height, boll number and three fiber quality traits were controlled by additive and epistatic effects, and no dominant effect existed. The upper part of lint yield was mainly controlled by dominant effect, Effects and epistatic effects of different degrees of control, yield traits and three fiber quality traits are not dominant × dominant effect (l); other traits of gene effect due to the combination of different and have a greater difference. The genetic effects of lint yield and boll weight were super dominant. There are 6 sources of super-pro-dominant in this experiment, namely | i |> d, h> d + i, l> d + i, h + l> i, h> d and h + l> d + Sexual effects (h) and additive × additive effects (i) are the main sources of heterosis