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山西省野生大豆资源遗传多样性分析
引用本文:王果,胡正,张保缺,王成社,张辉.山西省野生大豆资源遗传多样性分析[J].中国农业科学,2008,41(7):2182-2190.
作者姓名:王果  胡正  张保缺  王成社  张辉
作者单位:西北农林科技大学农学院
基金项目:国家重点基础研究发展计划(973计划)
摘    要: 【目的】明确山西省野生大豆的遗传多样性程度及其数量性状多样性的地理分布,为山西省野生大豆种质资源的利用和保护提供依据。【方法】以山西省已编目入库的544份野生大豆为材料,对其质量性状、数量性状及SSR标记进行遗传多样性分析。【结果】研究的8个质量性状,山西省半野生大豆的遗传多样性高于野生大豆;太原材料的遗传多样性高于山西省材料。4个数量性状的研究结果显示,野生大豆的变异程度高于半野生大豆,山西材料的变异程度高于太原材料;初步推断37~38°N、112~113°E经纬小区为山西省野生大豆数量性状的多样性中心。利用30对SSR引物分析了49份山西太原野生大豆材料,共检测到208个等位变异,每个SSR位点的等位变异范围为4~11个,平均为7个;引物的Shannon-weaver指数的分布范围为0.7451~2.1081,平均为1.5030;位点多态信息量(PIC)值的分布范围为0.3813~0.8575,平均为0.7007。【结论】表型和分子检测结果都表明,太原野生大豆材料的变异类型丰富、多样性程度较高。

关 键 词:野生大豆  表型性状  SSR  遗传多样性  山西省
收稿时间:2006-6-15

Genetic Diversity Analysis of Shanxi's Wild Soybean(Glycine soja)
WANG Guo,HU zheng,ZHANG Bao-que,WANG Cheng-she,ZHANG Hui.Genetic Diversity Analysis of Shanxi''s Wild Soybean(Glycine soja)[J].Scientia Agricultura Sinica,2008,41(7):2182-2190.
Authors:WANG Guo  HU zheng  ZHANG Bao-que  WANG Cheng-she  ZHANG Hui
Abstract:【Objective】Annual wild soybeans (Glycine soja), the ancestors of cultivated soybean (G. max), are important sources of major genes for resistance to pests, diseases and environmental stresses. The study of genetic diversity is invaluable for efficient utilization and conservation of annual wild soybeans.【Method】Genetic diversity of 544 accessions of annual wild soybeans, collected from Shanxi province, was evaluated by the traits of qualitative, quantitative and SSR molecular markers.【Results】Of 8 qualitative traits, the distribution of Shannon-weaver index and PIC were 0.0243-1.1814 and 0.0073-0.6582, with the mean of 0.5965 and 0.3262, respectively. The leaf shape value was the highest one of the Shannon-weaver index and the stem type value was the largest one of the PIC, while the cotyledon color value was the lowest in both. Of 4 quantitative traits, coefficients of variation were 99.40%, 24.63%, 13.49% and 5.70% for 100-seed weight, oil content, days to maturity and protein content, respectively; and the materials in 37-38W×112-113E plots were richest in accessions (190) and genetic diversity (1.9308). In 53 accessions, 218 alleles were found in 30 loci, with each locus having a mean of 7.27 alleles; and the mean of genetic diversity index was 1.5431,with a range of 0.7869~2.1561; while the mean of PIC was 0.6432, with a range of 0.3164~0.8637.【Conclusion】Of 8 qualitative traits and 4 quantitative traits, there was no correlation between genetic diversity index (shannon-weaver) and longitude or latitude (︱r︱=0.77 and ︱r︱=0.08,P﹥0.05) in Shanxi’s wild soybean. Based on the results of SSR analysis, Shanxi’s wild soybean, with high genetic diversity, was clustered into 5 groups, which showed some rules in the geographical distribution.
Keywords:Glycine soja  Agronomic traits  SSR  Genetic diversity
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