海南假臭草地理群遗传多样性RAPD分析  

RAPD Analysis of Genetic Diversity of Different Geographic Populations of Praxelis clematidea in Hainan

作　　者：李传军[1,2] 杨礼富[2] 袁坤[2] 王真辉[2] 陈秋波[2] 

机构地区：[1]海南大学环境与植物保护学院,海南儋州571737 [2]中国热带农业科学院橡胶研究所农业部橡胶树生物学重点开放实验室,海南儋州571737

出　　处：《热带作物学报》2011年第8期1523-1526,共4页Chinese Journal of Tropical Crops

基　　金：国家自然科学基金项目(No.30960088)

摘　　要：对海南省18个市（县）的假臭草地理种群进行RAPD—PCR聚类分析，将海南假臭草地理群分为5个类群：其中澄迈、海口、文昌、临高、儋州、昌江为一类群，东方、乐东、三亚、保亭、五指山、琼海、万宁、陵水、定安为一类群，屯昌、白沙、琼中各为一个类群。通过NTsys—pc2．10数据处理，分析各假臭草地理群的遗传相似系数，其遗传相似系数范围在0．5396825-0．9047619之间，说明快速进化是假臭草生物入侵的一种手段。Geographical diversity of Praxelis clematidea from eighteen various cities in Hainan were divided into five groups by RAPD-PCR cluster analysis. The first group included those from Chengmai, Haikou, Wenchang, Lingao, Danzhou and Changjiang. The second group consisted of those from Dongfang, Ledong, Sanya, Baoting, Wuzhishan, Qionghai, Wanning, Lingshui and Ding＇an. Those from Tunchang, Baisha or Qiongzhong belonged to another group. The genetic similarity coefficient of each geography group of Praxelis clematidea was analyzed via NTsys-pc2.10 data processing. The genetic similarity coefficient ranged from 0.539 682 5 to 0.904 761 9, suggesting that rapid evolution was one of the methods for Praxelis clematidea biological invasion.

关 键 词：假臭草 地理群 DNA多态性 RAPD—PCR 

分 类 号：Q948.11[生物学—植物学]