QTL Analysis of Five Silique-Related Traits in Brassica napus L. Across Multiple Environments
文献类型： 外文期刊
作者： Zhao, Xiaozhen 1 ; Yu, Kunjiang 3 ; Pang, Chengke 1 ; Wu, Xu 1 ; Shi, Rui 1 ; Sun, Chengming 1 ; Zhang, Wei 1 ; Chen, Feng 1 ; Zhang, Jiefu 1 ; Wang, Xiaodong 1 ;
作者机构： 1.Minist Agr & Rural Affairs, Jiangsu Acad Agr Sci, Key Lab Cotton & Rapeseed, Inst Ind Crops, Nanjing, Jiangsu, Peoples R China
2.Nanjing Agr Univ, State Key Lab Crop Genet & Germplasm Enhancement, Nanjing, Jiangsu, Peoples R China
3.Guizhou Univ, Coll Agr, Guiyang, Guizhou, Peoples R China
关键词： Brassica napus; recombinant inbred line; silique-related traits; QTL mapping; candidate genes
期刊名称：FRONTIERS IN PLANT SCIENCE （ 影响因子：6.627； 五年影响因子：7.255 ）
ISSN： 1664-462X
年卷期： 2021 年 12 卷
页码：
收录情况： SCI
摘要： As an important physiological and reproductive organ, the silique is a determining factor of seed yield and a breeding target trait in rapeseed (Brassica napus L.). Genetic studies of silique-related traits are helpful for rapeseed marker-assisted high-yield breeding. In this study, a recombinant inbred population containing 189 lines was used to perform a quantitative trait loci (QTLs) analysis for five silique-related traits in seven different environments. As a result, 120 consensus QTLs related to five silique-related traits were identified, including 23 for silique length, 25 for silique breadth, 29 for silique thickness, 22 for seed number per silique and 21 for silique volume, which covered all the chromosomes, except C5. Among them, 13 consensus QTLs, one, five, two, four and one for silique length, silique breadth, silique thickness, seed number per silique and silique volume, respectively, were repeatedly detected in multiple environments and explained 4.38-13.0% of the phenotypic variation. On the basis of the functional annotations of Arabidopsis homologous genes and previously reported silique-related genes, 12 potential candidate genes underlying these 13 QTLs were screened and found to be stable in multiple environments by analyzing the re-sequencing results of the two parental lines. These findings provide new insights into the gene networks affecting silique-related traits at the QTL level in rapeseed.
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