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中国农学通报 ›› 2015, Vol. 31 ›› Issue (24): 99-105.doi: 10.11924/j.issn.1000-6850.casb15010242

所属专题: 资源与环境 油料作物

• 农学 农业基础科学 • 上一篇    下一篇

陕西省野生大豆种质资源的SSR遗传多样性研究

李为民1,王宇超1,黎 斌1,张 燕1,卢 元1,周亚福1,柏国清1,丛晓峰1,李思锋1,2   

  1. (1陕西省西安植物园,陕西省植物研究所,西安 710061;2陕西省秦巴山区生物资源保护与利用工程技术研究中心,西安 710061)
  • 收稿日期:2015-01-30 修回日期:2015-03-18 接受日期:2015-03-25 出版日期:2015-08-26 发布日期:2015-08-26
  • 通讯作者: 李思锋
  • 基金资助:
    陕西省科学院青年人才培养项目“陕西省野生大豆种质资源遗传多样性及核心种质构建研究”(2012K-33)。

Analysis of Genetic Diversity of Glycine soja Germplasm Resources in Shaanxi Province

Li Weimin1, Wang Yuchao1, Li Bin1, Zhang Yan1, Lu Yuan1, Zhou Yafu1, Bai Guoqing1,   

  1. Cong Xiaofeng1, Li Sifeng1,2(1Xi’an Botanical Garden of Shaanxi Province, Institute of Botany of Shaanxi Province, Xi’an 710061;2Shaanxi Province Qinling-Bashan Mountains Engineering Research Centre of Conservation and Utilization of Biological Resources, Shaanxi 710061)
  • Received:2015-01-30 Revised:2015-03-18 Accepted:2015-03-25 Online:2015-08-26 Published:2015-08-26

摘要: 为了研究陕西地区野生大豆的遗传多样性特点,利用SSR分子标记分析了陕西省6个野生大豆(Glycine soja)天然种群和1个栽培大豆(Glycine max)种群的遗传结构与遗传多样性。结果显示:13个位点共检测出113个等位基因,平均每个位点的等位基因数(A)为8.69个,等位基因数目范围为4~13个,有效等位基因数(Ne)范围为2.135(Satt590)~9.385 (Satt487),平均有效等因基因数为5.623;观察杂合度(Ho)变化范围为0.033~0.121,平均为0.080;预期杂合度(He)的变化范围为0.312~0.658,平均为0.482;种群平均Shannon遗传多样性指数(I)为0.657;野生大豆种群基因多样度比率(FST)为0.465。该研究显示,陕西省野生大豆具有较高水平的遗传多样性,野生大豆的遗传多样性普遍高于栽培大豆;随着海拔的不断升高,野生大豆遗传多样性变低;陕西中部、南部的野生大豆种质资源丰富、种群具有较高的遗传多样性,推测该区域为陕西省野生大豆的遗传多样性中心。

关键词: 苎麻, 苎麻, 套作, 榨菜, 施肥量, 密度

Abstract: In order to evaluate the genetic diversity of the wild soybean (Glycine soja) in different regions of Shaanxi Province, the genetic diversity and genetic structure among 6 natural populations of wild soybean and 1 population of cultivated soybean (Glycine max) were analyzed by molecular markers of SSR. 113 alleles were detected in 13 microsatellite loci; the mean number of alleles per locus (A) was 8.69; the effective number of alleles per locus (Ne) was 5.632; the mean expected heterozygosity (He) was 0.482; and the mean observed heterozygosity per locus (Ho) was 0.080. The Shannon diversity index (I) was 0.657, with the proportion of genetic differentiation among populations (FST) as 46.5%. The research shows that the genetic diversity of wild soybean has a higher level in Shaanxi Province. The genetic diversity of wild soybean is generally higher than that of cultivated soybean. Along with the altitude increasing, the genetic diversity of wild soybean variation is declining. The wild soybean germplasm resource is rich in central and southern Shaanxi Province, and the population has high genetic diversity, therefore, it is speculated that the region is the center of genetic diversity of wild soybean in Shaanxi Province.