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Genetic diversity and differentiation of Chinese wild soybean germplasm (G-soja Sieb. & Zucc.) in geographical scale revealed by SSR markers

文献类型： 外文期刊

作者： Li, X. H. 1 ; Wang, K. J. 1 ; Jia, J. Z. 1 ;

作者机构： 1.Chinese Acad Agr Sci, Natl Key Facil Crop Gene Resources & Genet Improv, Inst Crop Sci, Beijing 100081, Peoples R China

2.China Agr Univ, Coll Biol Sci, Beijing 100094, Peoples R China

关键词： genetic diversity;genetic structure;geographical differentiation;Glycine soja;simple sequence repeat molyporphism

期刊名称：PLANT BREEDING （ 影响因子：1.832； 五年影响因子：1.956 ）

ISSN： 0179-9541

年卷期： 2009 年 128 卷 6 期

页码：

收录情况： SCI

摘要： P>Wild soybean (Glycine soja), as the progenitor of soybeans (G. max), is widely distributed in China and has been collected as a supplementary germplasm pool of soybeans. In this study, 375 wild soybean accessions from a set of genebank core collection were analysed for genetic diversity by using 42 simple sequence repeat primer pairs. The mean allele number per locus was 19.62. Ten-percent unique alleles involving 35 or 83.33% loci differentiated among the geographical regions. The mean gene diversity (h) per locus was 0.89. A very low mean coefficient of gene differentiation (G(ST) = 0.08) for geographical regions and a high mean within-region gene diversity (H(S) = 0.81) were observed, indicating that most genetic diversity existed within the regions. There was an obvious relationship between genetic distance and geographical distance. The results showed multiple centers of genetic diversity for Chinese wild soybean in North China, the Huanghe River Valley, and Central China as well as the Changjiang River Valley, implicating multiple site origins of soybeans within China.

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