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Population structure and interspecific differentiation of peat moss sister species Sphagnum capillifolium and S. rubellum in northern Europe.

Cronberg, Nils LU (1998) In Plant Systematics and Evolution 209(3-4). p.139-158
Abstract
Isozyme electrophoresis was used to study the morphologically similar sister speciesSphagnum rubellum andS. capillifolium from a sample of 1313 plants representing 37 populations from Scandinavia, Great Britain and S Germany. The mean pairwise genetic identities (I) among conspecific populations were 0.976 forS. rubellum and 0.969 forS. capillifolium, versus 0.627 between populations of the two species. Interspecific gene flow was indicated by the observation of occasional plants in sympatric populations with alleles otherwise unique to the other species. Populations of bisexualS. capillifolium were significantly more variable than populations of unisexualS. rubellum. Alpine populations ofS. rubellum andS. capillifolium were dominated by... (More)
Isozyme electrophoresis was used to study the morphologically similar sister speciesSphagnum rubellum andS. capillifolium from a sample of 1313 plants representing 37 populations from Scandinavia, Great Britain and S Germany. The mean pairwise genetic identities (I) among conspecific populations were 0.976 forS. rubellum and 0.969 forS. capillifolium, versus 0.627 between populations of the two species. Interspecific gene flow was indicated by the observation of occasional plants in sympatric populations with alleles otherwise unique to the other species. Populations of bisexualS. capillifolium were significantly more variable than populations of unisexualS. rubellum. Alpine populations ofS. rubellum andS. capillifolium were dominated by few genotypes, and differentiation among populations was pronounced, indicating a low level of sexual recombination. InS. rubellum, maximum variability was found in western areas with high annual precipitation. Distribution of alleles inS. rubellum indicated restricted gene flow between Great Britain and Scandinavia. Postglacial migration from separate refugia may explain large-scale variation inS. rubellum. (Less)
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author
organization
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type
Contribution to journal
publication status
published
subject
keywords
Bryophyta - Sphagnum rubellum - S. capillifolium - Isozymes - allozymes - genetic distance - genetic diversity - clonal diversity - breeding system - hybridization - gene flow - postglacial migration
in
Plant Systematics and Evolution
volume
209
issue
3-4
pages
139 - 158
publisher
Springer
ISSN
1615-6110
DOI
10.1007/BF00985226
language
English
LU publication?
yes
id
4d4478b3-b0ec-4a4f-acd6-3f09691ede36 (old id 774645)
date added to LUP
2007-12-30 18:32:52
date last changed
2016-04-15 19:56:51
@article{4d4478b3-b0ec-4a4f-acd6-3f09691ede36,
  abstract     = {Isozyme electrophoresis was used to study the morphologically similar sister speciesSphagnum rubellum andS. capillifolium from a sample of 1313 plants representing 37 populations from Scandinavia, Great Britain and S Germany. The mean pairwise genetic identities (I) among conspecific populations were 0.976 forS. rubellum and 0.969 forS. capillifolium, versus 0.627 between populations of the two species. Interspecific gene flow was indicated by the observation of occasional plants in sympatric populations with alleles otherwise unique to the other species. Populations of bisexualS. capillifolium were significantly more variable than populations of unisexualS. rubellum. Alpine populations ofS. rubellum andS. capillifolium were dominated by few genotypes, and differentiation among populations was pronounced, indicating a low level of sexual recombination. InS. rubellum, maximum variability was found in western areas with high annual precipitation. Distribution of alleles inS. rubellum indicated restricted gene flow between Great Britain and Scandinavia. Postglacial migration from separate refugia may explain large-scale variation inS. rubellum.},
  author       = {Cronberg, Nils},
  issn         = {1615-6110},
  keyword      = {Bryophyta -  Sphagnum rubellum  -  S. capillifolium  - Isozymes - allozymes - genetic distance - genetic diversity - clonal diversity - breeding system - hybridization - gene flow - postglacial migration},
  language     = {eng},
  number       = {3-4},
  pages        = {139--158},
  publisher    = {Springer},
  series       = {Plant Systematics and Evolution},
  title        = {Population structure and interspecific differentiation of peat moss sister species Sphagnum capillifolium and S. rubellum in northern Europe.},
  url          = {http://dx.doi.org/10.1007/BF00985226},
  volume       = {209},
  year         = {1998},
}