高级检索+

基于SSR荧光标记的广西天冬种质资源遗传多样性分析

Genetic Diversity Analysis of Asparagus cochinchinensis (Lour.) Merr. Germplasm Resources in Guangxi Based on Fluorescent SSR Markers

  • 摘要: 为充分利用天门冬种质资源,采用荧光SSR分子标记毛细管电泳技术,对广西及其周边不同生态环境的25份天门冬材料进行了遗传多样性分析。结果表明,从24对引物中筛选出8对位点多态性高且重复性好的引物,共扩增出33个多态性位点,平均每对引物扩增4.1个,每个引物扩增多态位点在2~10之间,多态性位点百分率为68.75%;材料间遗传相似系数为0.084~1.00,平均值为0.44。聚类分析结果表明,25份天门冬材料可分为两个大类,不同来源地的天冬资源穿插分布,地理分化不明显。荧光SSR分子标记毛细管电泳技术适合分析天门冬的遗传多样性,广西天冬具有较丰富的遗传多样性,来自隆林的16号野生资源与多个材料的遗传差异较大。

     

    Abstract: In order to make full use of Asparagus cochinchinensis germplasm resources, the genetic diversity of 25 Asparagus cochinchinensis materials from different ecological environments in Guangxi and its surrounding areas was analyzed by fluorescent SSR molecular marker capillary electrophoresis. The results showed that 8 primers with high polymorphism and good repeatability were selected from 24 pairs of primers. A total of 33 polymorphic loci were amplified, with an average of 4.1 polymorphic loci per pair. The polymorphic loci of each primer ranged from 2 to 10, and the percentage of polymorphic loci was 68.75%. The coefficient of genetic similarity between materials ranged from 0.084 to 1.00, and the mean value was 0.44. The results of cluster analysis showed that the 25 Asparagus cochinchinensis materials could be divided into two categories, and the Asparagus cochinchinensis resources from different sources were interspersed and the geographical differentiation was not obvious. Fluorescent SSR molecular marker capillary electrophoresis is suitable for analyzing the genetic diversity of Asparagus cochinchinensis. Asparagus cochinchinensis of Guangxi had a relatively rich genetic diversity, and the genetic difference between wild resource No. 16 from Longlin and other materials was large.

     

/

返回文章
返回