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题名: High genetic diversity in a rare, narrowly endemic primrose species: Primula interjacens by ISSR analysis
作者: Xue, DW; Ge, XJ; Hao, G; Zhang, CQ
刊名: ACTA BOTANICA SINICA
关键词: Primula interjacens ; endemic ; ISSR ; genetic diversity ; variety ; conservation strategy
英文摘要: Primula interjacens Chen (Primulaceae) is a rare and narrow endemic species of centralsouth of Yunnan Province in China. This species consists of two varieties: P. interjacens var. interjacens known with only one population, and P interjacens var. epilosa with two populations. Inter-simple sequence repeat (ISSR) marker was used to detect the genetic diversity of the three extant populations. We expected a low genetic diversity level, but our results revealed a high level of intraspecific genetic diversity (at population level: P = 59.75%, H-E = 0.236 8, and Hpop 0.345 9; at species level: P =75.47%, H-T= 0.320 5, and Hsp = 0.461 8), probably resulting from floral heteromorphism and preferring outcrossing. A moderate level of genetic differentiation among populations was detected based on Nei's genetic diversity analysis (26.13%) and Shannon's diversity index (25.09%). Although P interjacens var. interjacens and P interjacens var. epilosa were morphologically distinct, UPGMA cluster analysis showed that the two varieties had no distinct genetic differentiation and may be treated as a single taxon. Conservation measures are suggested, including in situ and ex situ strategies, based on the observed population genetic information.
出版日期: 2004-10-01
卷号: 46, 期号:10, 页码:1163-1169
语种: 英语
收录类别: SCI
学科分类: Biochemistry & Molecular Biology; Plant Sciences
ISSN号: 1672-6650
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内容类型: 期刊论文
URI标识: http://ir.kib.ac.cn/handle/151853/13509
Appears in Collections:离退休_期刊论文

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作者单位: 1.Chinese Acad Sci, Kunming Inst Bot, Kunming 650204, Peoples R China
2.Chinese Acad Sci, S China Bot Garden, Guangzhou 510650, Peoples R China

Recommended Citation:
Xue, DW; Ge, XJ; Hao, G; Zhang, CQ.High genetic diversity in a rare, narrowly endemic primrose species: Primula interjacens by ISSR analysis,ACTA BOTANICA SINICA,2004,46(10):1163-1169
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