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以青花菜86101×90196组合获得的DH群体和配制的6个联合世代(P1、P2、F1、B1、B2和F2)群体为试材,采用主基因+多基因混合遗传模型对花球‘荚叶’性状进行了遗传分析。DH群体分析结果表明,花球荚叶性状的遗传受到2对连锁并具有加性—加性×加性—上位性作用主基因+多基因(E-2-0模型)的控制;经6个世代联合分析结果表明,花球荚叶性状的遗传受到2对加性—显性—上位性主基因+加性—显性—上位性多基因(E模型)的控制,DH群体的主基因遗传率为70.80%,B1、B2和F2世代主基因遗传率分别为73.59%、57.70%和87.07%。上述结果表明:青花菜花球荚叶性状的遗传受到2对主基因+多基因的控制,主基因遗传率相对较高。
The DH population obtained from a combination of broccoli 86101 × 90196 and the six co-generation (P1, P2, F1, B1, B2 and F2) populations were used as experimental materials. Leaf traits were analyzed by genetic analysis. DH population analysis showed that the inheritance of pod-leaf traits was controlled by 2 pairs of linkage with additive-additive × additive-epistatic major gene + polygene (E-2-0 model); after 6 The results of joint generation analysis showed that the inheritance of pod-leaf traits was controlled by two pairs of additive-dominance-epistatic major genes plus additive-dominance-epistatic polygene (E model). The major gene inheritance of DH population The rate of the major genes in the B1, B2 and F2 generations were 73.59%, 57.70% and 87.07%, respectively. The above results showed that the genetic inheritance of pod leaf traits in broccoli was controlled by two major genes + polygene, and the heritability of major genes was relatively high.