利用小麦重组自交系群体对硒含量进行QTL定位。
QTL mapping of selenium content using a RIL population in wheat.
作者信息
Wang Pei, Wang Huinan, Liu Qing, Tian Xia, Shi Yanxi, Zhang Xiaocun
机构信息
College of Food Science and Engineering, Shandong Agricultural University, Tai'an, Shandong Province, China P.R.
State Key Laboratory of Crop Biology, Shandong Key Laboratory of Crop Biology, College of Agronomy, Shandong Agricultural University, Tai'an, Shandong Province, China P.R.
出版信息
PLoS One. 2017 Sep 7;12(9):e0184351. doi: 10.1371/journal.pone.0184351. eCollection 2017.
Selenium (Se) is an essential trace element that plays various roles in human health. Understanding the genetic control of Se content and quantitative trait loci (QTL) mapping provide a basis for Se biofortification of wheat to enhance grain Se content. In the present study, a set of recombinant inbred lines (RILs) derived from two Chinese winter wheat varieties (Tainong18 and Linmai6) was used to detect QTLs for Se content in hydroponic and field trials. In total, 16 QTLs for six Se content-related traits were detected on eight chromosomes, 1B, 2B, 4B, 5A, 5B, 5D, 6A, and 7D. Of these, seven QTLs were detected at the seedling stage and nine at the adult stage. The contribution of each QTL to Se content ranged from 7.37% to 20.22%. QSsece-7D.2, located between marker loci D-3033829 and D-1668160, had the highest contribution (20.22%). This study helps in understanding the genetic basis for Se contents and will provide a basis for gene mapping of Se content in wheat.
硒（Se）是一种必需的微量元素，在人体健康中发挥着多种作用。了解硒含量的遗传控制和数量性状位点（QTL）定位为小麦的硒生物强化以提高籽粒硒含量提供了基础。在本研究中，利用一组源自两个中国冬小麦品种（泰农18和临麦6）的重组自交系（RILs）在水培和田间试验中检测硒含量的QTL。总共在8条染色体（1B、2B、4B、5A、5B、5D、6A和7D）上检测到与6个硒含量相关性状的16个QTL。其中，在苗期检测到7个QTL，在成株期检测到9个QTL。每个QTL对硒含量的贡献率在7.37%至20.22%之间。位于标记位点D - 3033829和D - 1668160之间的QSsece - 7D.2贡献率最高（20.22%）。本研究有助于了解硒含量的遗传基础，并将为小麦硒含量的基因定位提供基础。
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