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题名: Low genetic diversity and high genetic differentiation in the critically endangered Omphalogramma souliei (Primulaceae): implications for its conservation
作者: Huang, Yuan1; Zhang, Chang-Qin1; null(李德铢)1
刊名: JOURNAL OF SYSTEMATICS AND EVOLUTION
关键词: genetic differentiation ; genetic diversity ; ISSR markers ; mating system ; Omphalogramma souliei
英文摘要: Omphalogramma souliei Franch. is an endangered perennial herb only distributed in alpine areas of SW China. ISSR markers were applied to determine the genetic variation and genetic structure of 60 individuals of three populations of O. souliei in NW Yunnan, China. The genetic diversity at the species level is low with P = 42.5% (percentage of polymorphic bands) and Hsp=0.1762 (total genetic diversity). However, a high level of genetic differentiation among populations was detected based on different measures (Nei's genetic diversity analysis: Gst=0.6038; AMOVA analysis: Fst=0.6797). Low level of genetic diversity within populations and significant genetic differentiation among populations might be due to the mixed mating system in which xenogamy predominated and autogamy played an assistant role in O. souliei. The genetic drift due to small population size and limited current gene flow also resulted in significant genetic differentiation. The assessment of genetic variation and differentiation of the endangered species provides important information for conservation on a genetic basis. Conservation strategies for this rare endemic species are proposed.
出版日期: 2009-03-01
卷号: 47, 期号:2, 页码:103-109
DOI标识: 10.1111/j.1759-6831.2009.00008.x
语种: 英语
收录类别: SCI
学科分类: Plant Sciences
ISSN号: 0529-1526
Citation statistics:
内容类型: 期刊论文
URI标识: http://ir.kib.ac.cn/handle/151853/2711
Appears in Collections:中国科学院东亚植物多样性与生物地理学重点实验室_期刊论文

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作者单位: 1.Chinese Acad Sci, Kunming Inst Bot, Key Lab Biodivers & Biogeog, Kunming 650204, Peoples R China

Recommended Citation:
Huang, Y; Zhang, CQ; Li, DZ.Low genetic diversity and high genetic differentiation in the critically endangered Omphalogramma souliei (Primulaceae): implications for its conservation,JOURNAL OF SYSTEMATICS AND EVOLUTION,2009,47(2):103-109
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