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题名: Ex situ genetic conservation of endangered Vatica guangxiensis (Dipterocarpaceae) in China
作者: Li, QM; Xu, ZF; He, TH
刊名: BIOLOGICAL CONSERVATION
关键词: ex situ conservation ; genetic diversity ; Vatica guangxiensis ; botanical garden
英文摘要: 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.
出版日期: 2002-08-01
卷号: 106, 期号:2, 页码:151-156
语种: 英语
收录类别: SCI
学科分类: Biodiversity Conservation; Ecology; Environmental Sciences
ISSN号: 0006-3207
Citation statistics:
内容类型: 期刊论文
URI标识: http://ir.kib.ac.cn/handle/151853/14365
Appears in Collections:离退休_期刊论文

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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

Recommended Citation:
Li, QM; Xu, ZF; He, TH.Ex situ genetic conservation of endangered Vatica guangxiensis (Dipterocarpaceae) in China,BIOLOGICAL CONSERVATION,2002,106(2):151-156
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