QTL mapping of PEG-induced drought tolerance at the early seedling stage in sesame using whole genome re-sequencing

文献类型： 外文期刊

第一作者： Liang, Junchao

作者： Liang, Junchao;Sun, Jian;Ye, Yanying;Yan, Xiaowen;Yan, Tingxian;Rao, Yueliang;Zhou, Hongying;Liang, Junchao;Sun, Jian;Ye, Yanying;Yan, Xiaowen;Yan, Tingxian;Rao, Yueliang;Zhou, Hongying;Le, Meiwang;Liang, Junchao;Sun, Jian;Ye, Yanying;Yan, Xiaowen;Yan, Tingxian;Rao, Yueliang;Zhou, Hongying;Le, Meiwang;Le, Meiwang

作者机构：

期刊名称：PLOS ONE （ 影响因子：3.24； 五年影响因子：3.788 ）

ISSN： 1932-6203

年卷期： 2021 年 16 卷 2 期

页码：

收录情况： SCI

摘要： Improvement in sesame drought tolerance at seedling stage is important for yield stability. Genetic approaches combing with conventional breeding is the most effective way to develop drought-tolerant cultivars. In this study, three traits and their relative values, including seedling weight (SW), shoot length (SL) and root length (RL), were evaluated under control and osmotic conditions in a recombinant inbred line (RIL) population derived from cross of Zhushanbai and Jinhuangma. Significant variation and high broad sense heritability were observed for all traits except SW under stress condition in the population. With this population, a high-density linkage map with 1354 bin markers was constructed through whole genome re-sequencing (WGS) strategy. Quantitative trait loci (QTL) mapping was performed for all the traits. A total of 34 QTLs were detected on 10 chromosomes. Among them, 13 stable QTLs were revealed in two independent experiments, eight of them were associated with traits under water stress condition. One region on chromosome 12 related to RL under osmotic condition and relative RL had the highest LOD value and explained the largest phenotypic variation among all the QTLs detected under water stress condition. These findings will provide new genetic resources for molecular improvement of drought tolerance and candidate gene identification in sesame.

分类号：

  • 相关文献
作者其他论文 更多>>

微信小程序