Genetic diversity of widespread Ophiopogon intermedius (Liliaceae sl): a   comparison with endangered O-xylorrhizus

doi:10.1016/S0006-3207(00)00068-9

CORC > 北京大学 > 生命科学学院

	Genetic diversity of widespread Ophiopogon intermedius (Liliaceae sl): a comparison with endangered O-xylorrhizus
	He, TH ; Rao, GY ; You, RL ; Ge, S ; Zhang, DM
刊名	生物保护
	2000
关键词	genetic diversity population differentiation endangered plant Ophiopogon CONSERVATION PLANTS CHINA RARE
DOI	10.1016/S0006-3207(00)00068-9
英文摘要	Allozyme electrophoresis was used to examine the levels and distribution of genetic diversity on Ophiopogon intermedius, a widespread perennial species. Based on allozyme variation at 17 putative loci, high levels of genetic variability were detected with 82.4% of the loci being polymorphic. The mean expected heterozygosity within population (Hep) and within species (HES) were 0.352 and 0.426, respectively. Differentiation among populations was detected with F-ST = 0.143. The high levels of genetic diversity in O. intermedius in the present allozyme survey are consistent with the results from the study on morphological and chromosomal characteristics variation. The results from the comparison of the levels of genetic diversity between O. intermedius and O. xylorrhizus, an endangered congener, showed that the widespread O. intermedius maintained much higher levels of genetic diversity than O. xylorrhizus (P = 46.2%, Hep = 0.091, Hes = 0.116; Ge, S., Zhang, D.M., Wang, H.Q., Rao, G.Y., 1997. Allozyme variation in Ophiopogon xylorrhizus: an extreme endemic species of Yunnan, China. Conservation Biology 11, 562-565). The present study seemly confirmed the general opinion that the widespread species maintains higher levels of genetic diversity than its rare and endangered congener with similar life history traits, while the latter does not necessarily have absolutely low genetic variation. Genetic drift in small populations and inbreeding could have contributed to the relative low genetic variation and gene flow within and among populations of O. xylorrhizus compared with it widespread congener. (C) 2000 Elsevier Science Ltd. All rights reserved.; http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000088945600013&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=8e1609b174ce4e31116a60747a720701 ; Biodiversity Conservation; Ecology; Environmental Sciences; SCI(E); 14; ARTICLE; 2; 253-257; 96
语种	英语
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/211978]
专题	生命科学学院
推荐引用方式 GB/T 7714	He, TH,Rao, GY,You, RL,et al. Genetic diversity of widespread Ophiopogon intermedius (Liliaceae sl): a comparison with endangered O-xylorrhizus[J]. 生物保护,2000.
APA	He, TH,Rao, GY,You, RL,Ge, S,&Zhang, DM.(2000).Genetic diversity of widespread Ophiopogon intermedius (Liliaceae sl): a comparison with endangered O-xylorrhizus.生物保护.
MLA	He, TH,et al."Genetic diversity of widespread Ophiopogon intermedius (Liliaceae sl): a comparison with endangered O-xylorrhizus".生物保护 (2000).