文章摘要
李祥军,唐文秀,黄仕训.桂林大旗瓣凤仙花遗传多样性的ISSR分析[J].广东农业科学,2013,40(13):142-144
桂林大旗瓣凤仙花遗传多样性的ISSR分析
ISSR analysis for genetic diversity of Impatiens macrovexilla in Guilin
  
DOI:
中文关键词: 大旗瓣凤仙  ISSR 分子检测  遗传多样性
英文关键词: Impatiens macrovexilla  ISSR analysis  genetic diversity
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作者单位
李祥军,唐文秀,黄仕训 1.中国科学院广西植物研究所广西桂林5410062. 广西师范大学生命科学学院广西桂林541006 
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中文摘要:
      采用ISSR 分子标记技术对桂林3个居群的30份大旗瓣凤仙花样品进行遗传多样性分析,结果表明,6个被筛选到的ISSR 引物共扩增出52 条谱带,其中47 条为多态带,多态率达90.38%,表明桂林大旗瓣凤仙花资源的遗传多样性非常丰富。居群间遗传分化系数为0.04838,基因流为2.8626,表明居群间存在较低的遗传分化,这可能主要是由其繁育特性造成的。聚类分析结果表明,采自同一产地的不同大旗瓣凤仙花样品未能严格聚合在一起,此结果可能是由于采样地地理距离较近或者花粉的传播方式所致。
英文摘要:
      Inter simple sequence repeat (ISSR) molecular technique was used to analyze the genetic diversity of 30 Impatiens macrovexilla individuals from 3 populations. The results showed that 52 ISSR bands were amplified by 6 primers, among which 47 bands were polymorphic bands and the polymorphie rate reached 90.38%. This result revealed that there was rich genetic diversity among resources of I. macrovexilla in Guilin. The genetic distance among populations was 0.04838 and Nm was 2.8626. Such low level of population genetic differentiation might result from the breeding system of these species. UPGMA cluster analysis showed that several individuals from the same area failed to be grouped together first, which might result from the close distribution of 3 populations and the breeding system of this species.
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