Identification of QTLs Associated With Agronomic Traits in Tobacco via a Biparental Population and an Eight-Way MAGIC Population

文献类型： 外文期刊

第一作者： Liu, Yutong

作者： Liu, Yutong;Yuan, Guangdi;Si, Huan;Sun, Ying;Jiang, Zipeng;Liu, Dan;Jiang, Caihong;Pan, Xuhao;Ren, Min;Pan, Yi;Sun, Kefan;Meng, He;Wen, Liuying;Xiao, Zhiliang;Feng, Quanfu;Yang, Aiguo;Cheng, Lirui;Yang, Jun;Luo, Zhaopeng;Zhang, Jianfeng;Pan, Yi

作者机构：

关键词： agronomic traits; QTL; MAGIC population; RIL population; tobacco

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： 2022 年 13 卷

页码：

收录情况： SCI

摘要： Agronomic traits such as plant height (PH), leaf number (LN), leaf length (LL), and leaf width (LW), which are closely related to yield and quality, are important in tobacco (Nicotiana tabacum L.). To identify quantitative trait loci (QTLs) associated with agronomic traits in tobacco, 209 recombinant inbred lines (RILs) and 537 multiparent advanced generation intercross (MAGIC) lines were developed. The biparental RIL and MAGIC lines were genotyped using a 430 K single-nucleotide polymorphism (SNP) chip assay, and their agronomic traits were repeatedly evaluated under different conditions. A total of 43 QTLs associated with agronomic traits were identified through a combination of linkage mapping (LM) and association mapping (AM) methods. Among these 43 QTLs, three major QTLs, namely qPH13-3, qPH17-1, and qLW20-1, were repeatedly identified by the use of various genetically diverse populations across different environments. The candidate genes for these major QTLs were subsequently predicted. Validation and utilization of the major QTL qLW20-1 for the improvement of LW in tobacco were investigated. These results could be applied to molecular marker-assisted selection (MAS) for breeding important agronomic traits in tobacco.

分类号：

  • 相关文献
作者其他论文 更多>>

微信小程序