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濒危植物资源冷杉遗传多样性研究
苏何玲;唐绍清
1.广西师范大学生物系;2.广西师范大学生物系 广西 桂林 541004;3.广西 桂林 541004
摘要:
资源冷杉(Abies ziyuanensis)属松科(Pinaceae)冷杉属(Abies),是国家一级保护的濒危植物。利用RAPD分子标记对分布于广西资源县银竹老山和湖南省炎陵县大院的2个资源冷杉种群共54株进行了遗传多样性分析。用20个随机引物共扩增到126个位点,其中66个位点是多态性的,总的多态位点百分率为52.4%,在两个种群分别为33.6%和31。2%。Nei's基因多样性为0.312,Shannon信息指数为0.475,两个种群的遗传分化系数Gst为0.455。基于Nei's遗传距离进行了UPGMA聚类分析,结果两种群的样品彼此明显区分开来。分析结果表明资源冷杉种群内的遗传多样性...
关键词:  资源冷杉    RAPD    遗传多样性    保护
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