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为进一步将小白菜、芜菁的优良晚抽薹特性转育到大白菜材料中,同时为转育遗传提供理论依据,有必要对大白菜、小白菜、芜菁间的晚抽薹遗传效应进行研究。以4组晚抽薹与易抽薹的材料的对应亲本(YH和BY;FMS和BY;WS和BY;MM和BY)及其杂交、回交世代(F1,F2,B1,B2)为试材分别进行遗传模型分析及遗传参数估算,结果表明:大白菜(YH)、小白菜(FMS和WS)、芜菁(MM)的晚抽薹性遗传均符合加性-显性-上位性模型,加性效应为主,兼有显性效应和上位性效应,早抽薹呈显性,其中WS的晚抽薹显性效应值不显著。广义遗传力和狭义遗传力均较高。因此,采用常规杂交育种方法可望在晚抽薹育种方面取得良好的效果。要育成一个晚抽性强的杂交品种必须双亲同时具备晚抽性才能成功。
In order to further transfer the good late bolting characteristics of Chinese cabbage and turnip to Chinese cabbage material, and to provide the theoretical basis for transplanting inheritance, it is necessary to study the genetic effect of late bolting of Chinese cabbage, Chinese cabbage and turnip. Four groups of late-bolting and bolting-susceptible parents (YH and BY; FMS and BY; WS and BY; MM and BY) and their hybrids and backcross generations (F1, F2, B1 and B2) Genetic model analysis and genetic parameter estimation showed that the late bolting inheritance of Chinese cabbage (YH), Chinese cabbage (FMS and WS) and turnip (MM) all accorded with additive-dominance-epistasis model, Effect dominated both dominant and epistatic effects, early bolting was dominant, in which WS late bolting significant effect was not significant. Broad heritability and narrow heritability are high. Therefore, the use of conventional breeding methods is expected to breed late bolting breeding achieved good results. To breed a late blooming hybrid must have both parents with a late pumping ability to succeed.