| 濒危植物连香树居群的遗传多样性和遗传分化研究 |
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| 引用本文： | 王静,张小平,李文良,王磊,吴建勋,陈一锟. 濒危植物连香树居群的遗传多样性和遗传分化研究[J]. 植物研究, 2010, 30(2): 208-214 |
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| 作者姓名： | 王静 张小平 李文良 王磊 吴建勋 陈一锟 |
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| 作者单位： | 安徽师范大学安徽省重要生物资源保护与利用研究重点实验室；安徽师范大学生物环境与生态安全安徽省高校重点实验室，芜湖 241000 |
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| 基金项目： | 安徽省教育厅自然科学研究重点项目(KJ2007A092);;国家教育部高等学校博士学科点专项科研基金(20060370001);;安徽省高校自然科学研究重点项目(2006KJ061A);;教育部科学技术研究重点项目(206066) |
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| 摘 要： | 利用ISSR分子标记技术对濒危植物连香树10个居群的遗传多样性和遗传变异进行了分析,结果表明:连香树物种水平遗传多样性较高,多态位点百分率(PPB)达到69.59%,Nei’s基因多样性指数(H)和Shannon信息指数(I)分别为0.231 3和0.351 4;而在居群水平上,多态位点百分率(PPB)为30.61%,Nei’s基因多样性指数(H)和Shannon信息指数(I)分别为0.115 6和0.173 3。遗传变异分析表明,居群间遗传分化程度高,遗传分化系数(GST)为0.500 3,居群间基因流Nm为0.527 3。Mantel检测,居群间的遗传距离和地理距离之间不存在显著的相关性。生境的片断化使居群间的基因流受阻,可能是导致居群间高遗传分化和居群水平低遗传多样性的主要原因。
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| 关 键 词： | 濒危植物；连香树；遗传多样性；遗传分化；ISSR |
Genetic Diversity and Genetic Variation of Populations Endangered Tree Cercidiphyllum japonicum |
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| WANG Jing ZHANG Xiao-Ping LI Wen-Liang WANG Lei WU Jian-Xun CHEN Yi-Kun. Genetic Diversity and Genetic Variation of Populations Endangered Tree Cercidiphyllum japonicum[J]. Bulletin of Botanical Research, 2010, 30(2): 208-214 |
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| Authors: | WANG Jing ZHANG Xiao-Ping LI Wen-Liang WANG Lei WU Jian-Xun CHEN Yi-Kun |
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| Affiliation: | Provincial Key Laboratory of Conservation and Employment of Biological Resources/a>;Anhui Normal University/a>;Key Laboratory of Biotic Environment and Ecological Safety in Anhui Province/a>;Wuhu 241000 |
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| Abstract: | By using inter-simple sequence repeat(ISSR) markers technique,this paper studied the genetic diversity and variation of ten populations of Cercidiphyllum japonicum.The results showed that at species level,the percentage of polymorphic loci(P) was 69.59%,Shannon's index(I) was 0.351 4 and Nei's gene diversity(H) was 0.231 3,indicating a high level of genetic diversity.Whereas,at population level,they were only 30.61%,0.173 3 and 0.115 6,respectively,suggesting a low level of genetic diversity.Genetic variati... |
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| Keywords: | Endangered species Cercidiphyllum japonicum genetic diversity genetic variation ISSR |
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