Origin and evolution of qingke barley in Tibet

文献类型： 外文期刊

第一作者： Zeng, Xingquan

作者： Zeng, Xingquan;Xu, Qijun;Yuan, Hongjun;Wang, Yulin;Wei, Zexiu;Zha, Sang;Tang, Yawei;Tashi, Nyima;Zeng, Xingquan;Xu, Qijun;Yuan, Hongjun;Wang, Yulin;Zha, Sang;Tang, Yawei;Guo, Yu;Mao, Likai;Liu, Qingfeng;Xia, Zhanfeng;Zhou, Juhong;Tai, Shuaishuai;Song, Li;Li, Shiming;He, Weiming;Zhao, Shancen;Fang, Xiaodong;Gao, Qiang;Yin, Ye;Mascher, Martin;Stein, Nils;Guo, Ganggang;Zhang, Jing;Li, Shuaicheng;Wei, Zexiu;Tashi, Nyima;Bai, Lijun;Zhuang, Zhenhua;Wang, Jian;Yang, Huanming;Wang, Jian;Yang, Huanming;Henry, Robert J.

作者机构：

期刊名称：NATURE COMMUNICATIONS （ 影响因子：14.919； 五年影响因子：15.805 ）

ISSN： 2041-1723

年卷期： 2018 年 9 卷

页码：

收录情况： SCI

摘要： Tibetan barley (Hordeum vulgare L., qingke) is the principal cereal cultivated on the Tibetan Plateau for at least 3,500 years, but its origin and domestication remain unclear. Here, based on deep-coverage whole-genome and published exome-capture resequencing data for a total of 437 accessions, we show that contemporary qingke is derived from eastern domesticated barley and it is introduced to southern Tibet most likely via north Pakistan, India, and Nepal between 4,500 and 3,500 years ago. The low genetic diversity of qingke suggests Tibet can be excluded as a center of origin or domestication for barley. The rapid decrease in genetic diversity from eastern domesticated barley to qingke can be explained by a founder effect from 4,500 to 2,000 years ago. The haplotypes of the five key domestication genes of barley support a feral or hybridization origin for Tibetan weedy barley and reject the hypothesis of native Tibetan wild barley.

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