The stability of Quaternary speciation: a case study in Primula sect. Auricula

	The stability of Quaternary speciation: a case study in Primula sect. Auricula
	Kadereit, J. W. ; Goldner, H. ; Holstein, N. ; Schorr, G. ; Zhang, L-B
刊名	ALPINE BOTANY
	2011
卷号	121 期号:1 页码:23-35
关键词	Admixture AFLPs Edaphic differentiation Hybrid fitness Quaternary refugia Reproductive isolation
ISSN号	1664-2201
通讯作者	Kadereit, JW (reprint author), Johannes Gutenberg Univ Mainz, Inst Spezielle Bot, D-55099 Mainz, Germany.
产权排序	4
英文摘要	Primula sect. Auricula, a group of 25 species distributed in the European Alpine System, has been hypothesised to have diversified in the Quaternary through speciation in geographically isolated glacial refugia. We here examine whether the integrity of species is endangered through hybridisation upon contact in the Holocene. To do this, we (1) critically screened the literature for reported hybrids and supplemented this with our own knowledge of the group, (2) performed an admixture analysis of AFLP variation of two partly sympatric species pairs, P. hirsuta/P. daonensis and P. latifolia/P. marginata, and (3) analysed long-known hybrid populations of P. lutea 9 P. hirsuta in Wipptal/Austria to identify possible mechanisms of reproductive isolation. The literature survey revealed that populations of the 32 hybrid combinations known have been observed at 63 localities. In the admixture analysis, two admixed individuals per species were found among 524 individuals of P. latifolia and P. marginata, and 21 admixed individuals were found among 234 individuals of P. hirsuta. The analysis of P. lutea 9 P. hirsuta hybrids revealed that they show reduced pollen and seed fertility, and are limited to soils with intermediate pH values. We conclude that although species of P. sect. Auricula can readily be hybridised experimentally, hybridisation is rare in nature and species are stable. Mechanisms of reproductive isolation include geographical and ecogeographical isolation, ecological hybrid inviability and reduced hybrid fertility.
学科主题	Plant Sciences
收录类别	SCI
资助信息	Deutsche Forschungsgemeinschaft (DFG)
语种	英语
WOS记录号	WOS:000289414200004
公开日期	2012-11-09
内容类型	期刊论文
源URL	[http://210.75.237.14/handle/351003/23453]
专题	成都生物研究所_生态研究
推荐引用方式 GB/T 7714	Kadereit, J. W.,Goldner, H.,Holstein, N.,et al. The stability of Quaternary speciation: a case study in Primula sect. Auricula[J]. ALPINE BOTANY,2011,121(1):23-35.
APA	Kadereit, J. W.,Goldner, H.,Holstein, N.,Schorr, G.,&Zhang, L-B.(2011).The stability of Quaternary speciation: a case study in Primula sect. Auricula.ALPINE BOTANY,121(1),23-35.
MLA	Kadereit, J. W.,et al."The stability of Quaternary speciation: a case study in Primula sect. Auricula".ALPINE BOTANY 121.1(2011):23-35.