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Sampling strategy for wild soybean(Glycine soja)populations based on their genetic diversity and fine-scale spatial genetic structure

查看全文 作　　者：ZHU [2]Weiyue;ZHOU [1]Taoying;ZHONG [1]Ming;LU [1]Baorong 高影响力作者 机构地区：[1]Fudan University,Shanghai 200433,China;[2]Shandong Institute of Light Industry,Jinan 250353,China高影响力机构 出　　处：《Frontiers in Biology》索引2007年第2卷第4期,共6页高影响力期刊 基　　金：This work was supported by the National Basic Research Program of China(No.2006CB403305). 摘　　要：A total of 892 individuals sampled from a wild soybean population in a natural reserve near the Yellow River estuary located in Kenli of Shandong Province(China)were investigated.Seventeen SSR(simple sequence repeat)primer pairs from cultivated soybeans were used to estimate the genetic diversity of the population and its variation pattern versus changes of the sample size(sub-samples),in addition to investigating the fine-scale spatial genetic structure within the population.The results showed relatively high genetic diversity of the population with the mean value of allele number(A)being 2.88,expected heterozygosity(He)0.431,Shannon diversity index(I)0.699,and percentage of poly-morphic loci(P)100%.Sub-samples of different sizes(ten groups)were randomly drawn from the population and their genetic diversity was calculated by computer simulation.The regression model of the four diversity indexes with the change of sample sizes was computed.As a result,27-52 individuals can reach 95%of total genetic variability of the population.Spatial autocorrelation analysis revealed that the genetic patch size of this wild soybean population is about 18 m.The study provided a scientific basis for the sampling strategy of wild soybean populations. 关 键 词：sampling strategy genetic diversity fine-scale spatial structure wild soybean simple sequence repeat(SSR)
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