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Genetic Analysis of Vitamin C Content in Rapeseed Seedlings by the Major Gene Plus Polygene Mixed Effect Model

文献类型： 外文期刊

作者： Wang, Chao 1 ; Wang, Tao 2 ; Wang, Xinfa 1 ; Wang, Hanzhong 1 ; Dun, Xiaoling 1 ;

作者机构： 1.Chinese Acad Agr Sci, Oil Crops Res Inst, Key Lab Biol & Genet Improvement Oil Crops, Minist Agr, Wuhan 430062, Peoples R China

2.Guizhou Acad Agr Sci, Guizhou Rapeseed Inst, Guiyang 550007, Peoples R China

关键词： rapeseed seedlings; vitamin C; major gene; polygene; inheritance

期刊名称：CURRENT ISSUES IN MOLECULAR BIOLOGY （ 影响因子：3.0； 五年影响因子：3.2 ）

ISSN： 1467-3037

年卷期： 2024 年 46 卷 9 期

页码：

收录情况： SCI

摘要： Rapeseed (Brassica napus L.) seedlings are rich in vitamin C (Vc), which is beneficial for humans. Understanding the genetic variance in Vc content has practical significance for the breeding of "oil-vegetable dual-purpose" rapeseed. In this study, the joint segregation analysis of a mixed genetic model of the major gene plus polygene was conducted on the Vc content in rapeseed seedlings. Six generations, including two parents, P1 (high Vc content) and P2 (low Vc content), F1, and the populations of F2, BC1P1, and BC1P2 from two crosses were investigated. Genetic analysis revealed that the genetic model MX2-A-AD was the most fitting genetic model, which indicates that Vc content is controlled by two additive major genes plus additive and dominance polygenes. In addition, the whole heritability in F2 and BC1P1 was higher than that in BC1P2. The largest coefficient of variation for Vc content appeared in the F2 generation. Therefore, for Vc content, the method of single cross recross or single backcross are suggested to transfer major genes, and the selection in F2 would be more efficient than that in other generations. Our findings provide a theoretical basis for the quantitative trait locus (QTL) mapping and breeding of Vc content in rapeseed seedlings.

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