Dissection of additive, epistatic and QTL x environment effects involved in oil content variations in rapeseed

文献类型： 外文期刊

第一作者： Huang, Jixiang

作者： Huang, Jixiang;Chen, Fei;Ni, Xiyuan;Wang, Yilong;Liu, Han;Zhao, Jianyi;Chen, Fei;Zhang, Haozhong;Wang, Yilong;Yao, Xiangtan;Xu, Haiming;Wang, Hao;Meng, Jinling

作者机构：

关键词： additive x environment interaction;Brassica napus L;epistasis;quantitative trait loci (QTL);seed oil content

期刊名称：PLANT BREEDING （ 影响因子：1.832； 五年影响因子：1.956 ）

ISSN：

年卷期：

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收录情况： SCI

摘要： In this study, we observed variation of rapeseed oil content in SG population across 11 environments. A joint mapping was conducted to detect the quantitative trait loci (QTL) involved in oil content variation. We examined additive main (a), epistatic effects (aa) and their interactions with environments (QE). Apart from a of 12 QTL (collectively to 6.74% of oil content), aa of 18 locus pairs contributed to 5.36% difference, explaining 45.3% of phenotypic variation in the population. Moreover, 28 QE interactions contributed to a change of 1.55% in oil content in each environment, accounting for 13.3% phenotypic variation. Two environmentally sensitive QTL (OilC2 and OilC8-1) exhibited a small a (0.17) but strong ae (0.41 and 0.32 averagely). These two QTL were also frequently involved in epistatic interactions. However, two major QTL (OilA7 and OilC8-2) showed few QE and uninvolved in epistasis. In conclusion, a and aa were the dominant contributors to oil content in rapeseed, while QE accounted for 10-15% of variation. The results suggest OilA7 and OilC8-2 are potential candidates for breeding utilization and gene cloning.

分类号： S8

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