Ex situ genetic conservation of endangered Vatica guangxiensis (Dipterocarpaceae) in China

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	Ex situ genetic conservation of endangered Vatica guangxiensis (Dipterocarpaceae) in China
	Li, QM ; Xu, ZF ; He, TH
	2002-08-01
发表期刊	BIOLOGICAL CONSERVATION
ISSN	0006-3207
卷号	106 期号:2 页码:151-156
摘要	RAPD polymorphisms were applied to check the efficiency of ex situ genetic conservation of endangered Vatica guangxiensis X. L. Mo. endemic to southwestern China. Low level of genetic variation was revealed in three remaining natural populations. Twenty random primers, each with 10 base pairs, generated 231 bands with 53.68% being polymorphic, and with an average of 32.46% being polymorphic in each natural population. Strong Population differentiation was revealed by AMOVA (analysis of molecular variance) and Gst value was 0.3764. The population ML ex situ conserved in the Xishuangbanna Tropical Botanical Garden contained an intermediate genetic variation compared with natural Populations. with 30.74% bands being polymorphic. Of the total 231 bands generated in V. guangxiensis, 204 bands were also detected in population M L, indicating that 88.31% of the total genetic variations of this species were conserved in ex situ population. If only the alleles with moderate to high frequency (P>0.05) were considered, 204 out of 209 bands (97.61%) occurred in ex situ population M L. RAPD analysis also detected one exclusive band in natural population NS, and five in natural population NP, three of these exclusive bands were generated in every samples of natural population (NP), and other three had moderate to high frequencies. While none of these exclusive bands were detected in ex situ conserved population ML. Our conclusions Lire that the ex situ conserved population ML contains representative genetic variation to maintain long-term survival and evolutionary process of V. guangxiensis, and that more extensive ex situ sampling in natural population NS and NP is needed to conserve more exclusive alleles in ex situ population. The tropical area in the Botanical Garden would play a more important role in the ex situ conservation of rare and endangered plants. (C) 2002 Elsevier Science Ltd. All rights reserved.
关键词	Ex Situ Conservation Genetic Diversity Vatica Guangxiensis Botanical Garden
学科领域	Biodiversity Conservation ; Ecology ; Environmental Sciences
收录类别	SCI
语种	英语
WOS记录号	WOS:000176269900002
引用统计	被引频次：59[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.kib.ac.cn/handle/151853/14365
专题	离退休
作者单位	1.Chinese Acad Sci, Inst Bot, Lab Systemat & Evolutionary Bot, Beijing 100093, Peoples R China 2.Chinese Acad Sci, Xishuangbanna Trop Bot Garden, Mengla 666303, Peoples R China 3.Chinese Acad Sci, Kunming Inst Bot, Kunming 650204, Peoples R China
推荐引用方式 GB/T 7714	Li, QM,Xu, ZF,He, TH. Ex situ genetic conservation of endangered Vatica guangxiensis (Dipterocarpaceae) in China[J]. BIOLOGICAL CONSERVATION,2002,106(2):151-156.
APA	Li, QM,Xu, ZF,&He, TH.(2002).Ex situ genetic conservation of endangered Vatica guangxiensis (Dipterocarpaceae) in China.BIOLOGICAL CONSERVATION,106(2),151-156.
MLA	Li, QM,et al."Ex situ genetic conservation of endangered Vatica guangxiensis (Dipterocarpaceae) in China".BIOLOGICAL CONSERVATION 106.2(2002):151-156.

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