The use of RAPD markers for detecting genetic diversity, relationship and molecular identification of Chinese elite tea genetic resources [Camellia sinensis (L.) O. Kuntze] preserved in a tea germplasm repository

文献类型： 外文期刊

第一作者： Chen, L

作者： Chen, L;Gao, QK;Chen, DM;Xu, CJ

作者机构：

关键词： Genetic diversity;Genetic relationship;Molecular identification;RAPD;Tea genetic resources (Camellia sinensis)

期刊名称：BIODIVERSITY AND CONSERVATION （ 影响因子：3.549； 五年影响因子：3.915 ）

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收录情况： SCI

摘要： The genetic diversity, relationship and molecular identification of 15 well known, widely planted traditional Chinese elite tea genetic resources [Camellia sinensis (L.) O. Kuntze] preserved in the China National Germplasm Hangzhou Tea Repository in the Tea Research Institute of the Chinese Academy of Agricultural Sciences located in Zhejiang province, China, were investigated using RAPD markers. A total of 1050 bands with an average of 52.5 bands per primer, 70 bands per genetic resource were generated by the 20 selected primers from the 15 tea genetic resources. In the total of 137 amplified products, 129 were polymorphic, corresponding to 94.2% genetic diversity. The relative frequency of polymorphic products was from 0.24 to 0.83, with an average of 0.47. In general, this average frequency was relatively high. The genetic distances among the genetic resources were from 0.16 to 0.62, with an average of 0.37. The 15 tea genetic resources were grouped into three groups by UPGMA cluster analysis based on RAPD data. By using the presence of 20 unique RAPD markers and the absence of 11 unique markers, all the 15 investigated tea genetic resources could be easily identified. RAPD markers provided a practical method not only to evaluate the genetic diversity and relationship, but also to identify tea genetic resources.

分类号： Q

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