文献类型： 外文期刊
作者： Mei, Hongxian 1 ; Liu, Yanyang 1 ; Cui, Chengqi 1 ; Hu, Chengda 2 ; Xie, Fuxin 3 ; Zheng, Lei 4 ; Du, Zhenwei 1 ; Wu, Ke; 1 ;
作者机构： 1.Henan Acad Agr Sci, Henan Sesame Res Ctr, Zhengzhou 450008, Peoples R China
2.Henan Inst Meteorol Sci, Zhengzhou 450003, Peoples R China
3.Nanyang Acad Agr Sci, Nanyang 473085, Peoples R China
4.Luohe Acad Agr Sci, Luohe 462300, Peoples R China
关键词： Sesamum indicum L; Genetic map; QTL; Yield-related traits
期刊名称：MOLECULAR BREEDING （ 影响因子：2.589； 五年影响因子：2.75 ）
ISSN： 1380-3743
年卷期： 2021 年 41 卷 7 期
页码：
收录情况： SCI
摘要： Improving yield is one of the most important targets of sesame breeding. Identifying quantitative trait loci (QTLs) of yield-related traits is a prerequisite for marker-assisted selection (MAS) and QTL/gene cloning. In this study, a BC1 population was developed and genotyped with the specific-locus amplified fragment (SLAF) sequencing technology, and a high-density genetic map was constructed. The map consisted of 13 linkage groups, contained 3528 SLAF markers, and covered a total of 1312.52 cM genetic distance, with an average distance of 0.37 cM between adjacent markers. Based on the map, 46 significant QTLs were identified for seven yield-related traits across three environments. These QTLs distributed on 11 linkage groups, each explaining 2.34-71.41% of the phenotypic variation. Of the QTLs, 23 were stable QTLs that were detected in more than one environment, and 20 were major QTLs that explained more than 10% of the corresponding phenotypic variation in at least one environment. Favorable alleles of 38 QTLs originated from the locally adapted variety, Yuzhi 4; the exotic germplasm line, BS, contributed favorable alleles to only 8 QTLs. The results should provide useful information for future molecular breeding and functional gene cloning.
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