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	Population genetic survey of populus cathayana originating from southeastern qinghai-tibetan plateau of china based on ssr markers
	Peng, YH; Lu, ZX; Chen, K; Luukkanen, O; Korpelainen, H; Li, CY
刊名	Silvae genetica
	2005
卷号	54期号:3页码:116-122
关键词	Genetic differentiation Genetic diversity Heterozygosity excess Microsatellites Populus cathayana
ISSN号	0037-5349
通讯作者	Li, cy()
英文摘要	In this study, the genetic diversity of populus cathayana rehd was investigated using microsatellite markers. in a total of 150 individuals collected from six natural populations in the southeastern part of the qinghai-tibetan plateau in china, a high level of microsatellite polymorphism was detected. at the seven investigated microsatellite loci, the number of alleles per locus ranged from 5 to 16, with a mean of 11.3, the observed heterozygosities across populations ranged from 0.408 to 0.986, with a mean of 0.792, and the expected heterozygosities across populations ranged from 0.511 to 0.891, with a mean of 0.802. the proportion of genetic differentiation among populations accounted for 37.3% of the whole genetic diversity. the presence of such a high level of genetic diversity could be attributed to the features of the species and the habitats where the sampled populations occur: the southeastern part of the qinghai-tibetan plateau is regarded as the natural distribution and variation center of the genus populus in china. variation in environmental conditions and selection pressures in different populations, and topographic dispersal barriers could be factors associated with the high level of genetic differentiation found among populations. the populations possessed significant heterozygosity excesses, which may be due to extensive population mixing at the local scale. the cluster analysis showed that the populations are not strictly grouped according to their geographic distances but the habitat characteristics also influence the divergence pattern. in addition, we suggest that population shy should be regarded as an ecologically divergent species of p. cathayana.
WOS关键词	MICROSATELLITE MARKERS ; POPLAR POPULUS ; DNA MARKERS ; NIGRA L. ; DIVERSITY ; DIFFERENTIATION ; TREMULOIDES ; ASPEN ; CLONES
WOS研究方向	Forestry ; Genetics & Heredity
WOS类目	Forestry ; Genetics & Heredity
语种	英语
出版者	J D SAUERLANDERS VERLAG
WOS记录号	WOS:000233424700005
内容类型	期刊论文
URI标识	http://www.corc.org.cn/handle/1471x/2377870
专题	中国科学院大学
通讯作者	Li, CY
作者单位	1.Chinese Acad Sci, Chengdu Inst Biol, Chengdu 610041, Peoples R China 2.Chinese Acad Sci, Grad Sch, Beijing 100039, Peoples R China 3.Univ Helsinki, Viikki Trop Resources Inst, FI-00014 Helsinki, Finland 4.Univ Helsinki, Dept Appl Biol, FI-00014 Helsinki, Finland
推荐引用方式 GB/T 7714	Peng, YH,Lu, ZX,Chen, K,et al. Population genetic survey of populus cathayana originating from southeastern qinghai-tibetan plateau of china based on ssr markers[J]. Silvae genetica,2005,54(3):116-122.
APA	Peng, YH,Lu, ZX,Chen, K,Luukkanen, O,Korpelainen, H,&Li, CY.(2005).Population genetic survey of populus cathayana originating from southeastern qinghai-tibetan plateau of china based on ssr markers.Silvae genetica,54(3),116-122.
MLA	Peng, YH,et al."Population genetic survey of populus cathayana originating from southeastern qinghai-tibetan plateau of china based on ssr markers".Silvae genetica 54.3(2005):116-122.

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