AFLP ANALYSIS OF GENETIC DIVERSITY IN POPULUS CATHAYANA REHD ORIGINATING FROM SOUTHEASTERN QINGHAI-TIBETAN PLATEAU OF CHINA

	AFLP ANALYSIS OF GENETIC DIVERSITY IN POPULUS CATHAYANA REHD ORIGINATING FROM SOUTHEASTERN QINGHAI-TIBETAN PLATEAU OF CHINA
	Chen, Ke ; Peng, Youhong
刊名	PAKISTAN JOURNAL OF BOTANY
	2010
卷号	42 期号:1 页码:117-127
ISSN号	0556-3321
通讯作者	Peng, YH, Chinese Acad Sci, Chengdu Inst Biol, POB 416, Chengdu 610041, Peoples R China
中文摘要	The wide geographical and climatic distribution of Populus cathayana Rehd indicates that there is a large amount of genetic diversity available, which can be exploited for conservation, breeding programs and afforestation schemes. In our study, genetic diversity was evaluated in the natural populations of P. cathayana originating from southern and eastern areas of the Qinghai-Tibetan Plateau of China by means of AFLP markers. For four primer combinations, a total of 175 bands were obtained of which 173 (98.9%) were polymorphic. Six natural populations of P. cathayana possessed different levels of genetic diversity, high level of genetic differentiation existed among the populations (G(ST)=0.489) of P. cathayana. Individuals cluster and PCO analysis based on Jaccard's similarity coefficient also showed evident population genetic structure with high level of population genetic differentiation. The long evolutionary process coupled with genetic drift within populations, rather than contemporary gene flow, are the major forces shaping genetic structure of P. cathayana populations. Moreover, there was no correspondence between geographical and genetic distances in the populations of P. cathayana, seldom gene exchange among the populations and different selection pressures may be the causes. Our findings of different levels of genetic diversity within populations and high level of genetic differentiation among the populations provided promising condition for further breeding and conservation programs.
学科主题	Plant Sciences
收录类别	SCI
资助信息	National Natural Science Foundation of China [30525036]; Research Fundation of Southwest University of Science and Technology [08ZX7105]
语种	英语
公开日期	2011-07-08
内容类型	期刊论文
源URL	[http://210.75.237.14/handle/351003/22528]
专题	成都生物研究所_生态研究
推荐引用方式 GB/T 7714	Chen, Ke,Peng, Youhong. AFLP ANALYSIS OF GENETIC DIVERSITY IN POPULUS CATHAYANA REHD ORIGINATING FROM SOUTHEASTERN QINGHAI-TIBETAN PLATEAU OF CHINA[J]. PAKISTAN JOURNAL OF BOTANY,2010,42(1):117-127.
APA	Chen, Ke,&Peng, Youhong.(2010).AFLP ANALYSIS OF GENETIC DIVERSITY IN POPULUS CATHAYANA REHD ORIGINATING FROM SOUTHEASTERN QINGHAI-TIBETAN PLATEAU OF CHINA.PAKISTAN JOURNAL OF BOTANY,42(1),117-127.
MLA	Chen, Ke,et al."AFLP ANALYSIS OF GENETIC DIVERSITY IN POPULUS CATHAYANA REHD ORIGINATING FROM SOUTHEASTERN QINGHAI-TIBETAN PLATEAU OF CHINA".PAKISTAN JOURNAL OF BOTANY 42.1(2010):117-127.