Journal of Integrative Agriculture ›› 2016, Vol. 15 ›› Issue (11): 2481-2487.DOI: 10.1016/S2095-3119(15)61289-8

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  • 收稿日期:2015-11-02 出版日期:2016-11-04 发布日期:2016-11-04

Genetic diversity center of cultivated soybean (Glycine max) in China - New insight and evidence for the diversity center of Chinese cultivated soybean

WANG Li-xia1<...... LIN Fan-yun2<...... LI Lin-hai2<...... LI Wei3<...... YAN Zhe4<...... LUAN Wei-jiang2<...... PIAO Ri-hua3<...... GUAN Yuan4<...... NING Xue-cheng4<...... ZHU Li4<...... MA Yan-song5<...... DONG Zhi-min6<...... ZHANG Hai-yan4<...... ZHANG Yue-qiang4<...... GUAN Rong-xia1<...... LI Ying-hui1<...... LIU Zhang-xiong1<...... CHANG Ru-zhen1<...... QIU Li-juan......   

  1. 1 The National Key Facility for Crop Gene Resources and Genetic Improvement (NFCRI)/Key Laboratory of Germplamsm Utilization, Ministry of Agiculture/Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Beijing 100081, P.R.China
    2 College of Agriculture, Northwest A & F University, Yanglin 712100, P.R.China
    3 College of Agriculture, Northeast Agricultural University, Harbin 150030, P.R.China
    4 College of Science and Technology, Xinjiang Agricultural University, Urumqi 830046, P.R.China
    5 Department of Agronomy, Jilin Agricultural University, Changchun 130118, P.R.China
    6 Department of Agronomy, Liaoning Agricultural University, Shenyang 110161, P.R.China
  • Received:2015-11-02 Online:2016-11-04 Published:2016-11-04
  • Contact: QIU Li-juan, Tel: +86-10-82105843, Fax: +86-10-82105840, E-mail: qiulijuan@caas.cn
  • Supported by:

    This study was supported by the National Basic Research Program of China (973, G1998010203 and 2004CB117203) and the Agricultural Science and Technology Innovation Program (ASTIP) of Chinese Academy of Agricultural Sciences.

Abstract:     Information on the center of genetic diversity of soybean (Glycine max) will be helpful not only for designing efficient strategies for breeding programs, but also for understanding the domestication and origin of this species. Here, we describe an analysis of genetic diversity based on simple-sequence repeat (SSR) variations within a core collection of 2 111 accessions of Chinese soybean landraces. Prior to the diversity assessment, the geographic origin of each accession was mapped. The map was then divided into grids each 2.5° in latitude and 5° in longitude. We found two regions that had higher number of alleles (NA) and greater polymorphic information content (PIC) values than the others. These regions are adjacently located within grid position of 30°–35°N×105°–110°E, which includes the valley of the middle and lower reaches of the Wei River, and the valley of the upper reaches of the Hanjiang River. It was also observed that in many regions, genetic diversity decreased with the increase in distance from the center. Another region, in northern Hebei Province (115°–120°E×40°–42.5°N), was observed having higher diversity than any surrounding regions, indicating that this is a sub-center of soybean diversity. Based on the presented results, the domestication and origin of soybean are also discussed.

Key words: Glycine max ,  genetic resources ,  SSRs ,  diversity center ,  domestication