以高维生素C含量不结球白菜自交系乌塌菜和低维生素C含量不结球白菜自交系二青杂交获得的6个世代(P1、P2、F1、B1、B2和 F2)株系为材料,应用植物数量性状主基因+多基因混合遗传模型,对不结球白菜中维生素 C含量进行遗传分析。结果显示,不结球白菜中维生素C含量受1对加性主基因+加性-显性多基因控制,其中2011年结果中,主基因的加性效应为13.15,在 B1、B2、F2世代中主基因的遗传率分别为54.38%、38.58%和18.69%,多基因的遗传率分别为24.69%、36.92%和40.70%；2013年结果中,主基因的加性效应为6.04,在B1、B2、F2世代中主基因的遗传率分别为1.88%、6.41%和45.04%,多基因的遗传率分别为39.67%、16.57%和16.91%。可见,不结球白菜维生素 C 性状受环境影响较大,在不结球白菜高维生素 C 含量品种选育过程中,要注重环境影响,并可以通过分子标记辅助选择,对性状进行改良。
Major Gene Plus Polygene Inheritance of Vitamin C Content in Non-heading Chinese Cabbage
The mixed major gene plus polygene inheritance model was used to investigate the inheritance law of vitamin C in non-heading Chinese cabbage (Brassica campestris ssp. chinensis Makino) in six generations (P1, P2, F1, B1, B2, and F2) derived from Wutacai line (with high vitamin C content) × Erqing line (with low vitamin C content). The results showed that the trait of vitamin C was controlled by one additive major gene plus additive-dominant polygene in the joint analysis of six generations. The result in 2011 showed that the additive effect was 13.15. Heritabilities of major genes in B1, B2, and F2 populations were 54.38%, 38.58%, and 18.69%, respectively, while those of polygenes in the three populations were 24.69%, 36.92%, and 40.7%, respec-tively. The result in 2013 showed that the additive effect was 6.04. Heritabilities of major genes in B1, B2, and F2 populations were 1.88%, 6.41%, and 45.04%, respectively, while those of polygenes in B1, B2, and F2 populations were 39.67%, 16.57%, and 16.91%, respectively. The results from two years indicated that environmental factors could play roles in inheritance of vitamin C in non-heading Chinese cabbage. Thus, the marker assisted selection method could be used to screen high vitamin C cultivars of non-heading Chinese cabbage. In addition, environmental conditions should also be considered in the breeding process.
Non-heading Chinese cabbageVitamin CMajor gene plus polygeneInheritance model
国家科技期刊平台
NSTL
万方数据
维普
