Genetic diversity in Isoetes yunguiensis,a rare and endangered endemic fern in China

作     者：CHEN Jinming Wahiti R.Gituru LIU Xing WANG Qingfeng 

作者机构：Laboratory of Plant Systematics and Evolutionary BiologyCollege of Life SciencesWuhan UniversityWuhan 430072China Botany DepartmentJomo Kenyatta University of Agriculture and TechnologyP.O.Box 62000-00200NairobiKenya 

出 版 物：《Frontiers in Biology》 (生物学前沿（英文版）)

年 卷 期：2007年第2卷第1期

页      面：46-49页

核心收录：

学科分类：0202[经济学-应用经济学] 02[经济学] 020205[经济学-产业经济学] 

基　　金：This study was supported by the State Key Basic Research and Development Plan(No.G2000046805) the National Natural Science Foundation of China(Grant No.30370098) 

主　　题：endemic fern genetic diversity Isoetes random amplified polymorphic DNA(RAPD) rare and endangered 

摘      要：Isoetes yunguiensis is an endangered and endem-ic fern in *** survey indicated that only one popula-tion and no more than 50 individuals occur in the *** genetic variation of 46 individuals from the population remaining at Pingba(Guizhou Province,China)was assessed by Random Amplified Polymorphic DNA(RAPD)*** primers were screened from sixty ten-bp arbitrary primers,and a total of 95 DNA fragments were *** these,62.1%were polymorphic loci,which indi-cated that high level genetic variation existed in the natural *** accumulation of genetic variation in the history of the taxon and the apparent minimal reduction effect on genetic diversity following destruction of habitat might be responsible for the high level genetic diversity presently remaining in the *** ***,with the continuing decrease of population size,the genetic diversity will gradually be *** suggest that the materials from the extant population should be used for re-establishment of the populations.