Frequent germplasm exchanges drive the high genetic diversity of Chinese-cultivated common apricot germplasm

文献类型： 外文期刊

第一作者： Zhang, Qiuping

作者： Zhang, Qiuping;Liu, Ning;Zhang, Yuping;Xu, Ming;Zhang, Yu-Jun;Ma, Xiaoxue;Liu, Shuo;Liu, Weisheng;Zhang, Diyang;Sun, Wei-Hong;Yu, Xia;Hu, Wenqi;Lan, Si-Ren;Liu, Zhong-Jian;Yu, Kang;Ji, Jingjing;Liu, Zhong-Jian;Liu, Zhong-Jian

作者机构：

期刊名称：HORTICULTURE RESEARCH （ 影响因子：6.793； 五年影响因子：6.589 ）

ISSN： 2662-6810

年卷期： 2021 年 8 卷 1 期

页码：

收录情况： SCI

摘要： The genetic diversity of germplasm is critical for exploring genetic and phenotypic resources and has important implications for crop-breeding sustainability and improvement. However, little is known about the factors that shape and maintain genetic diversity. Here, we assembled a high-quality chromosome-level reference of the Chinese common apricot 'Yinxiangbai', and we resequenced 180 apricot accessions that cover four major ecogeographical groups in China and other accessions from occidental countries. We concluded that Chinese-cultivated common apricot germplasms possessed much higher genetic diversity than those cultivated in Western countries. We also detected seven migration events among different apricot groups, where 27% of the genome was identified as being introgressed. Remarkably, we demonstrated that these introgressed regions drove the current high level of germplasm diversity in Chinese-cultivated common apricots by introducing different genes related to distinct phenotypes from different cultivated groups. Our results highlight the consideration that introgressed regions may provide an important reservoir of genetic resources that can be used to sustain modern breeding programs.

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