Geographic structure of genetic variation in the widespread woodland grass Milium effusum L. A comparison between two regions with contrasting history and geomorphology
(2002) In Genome 45(6). p.1248-1256- Abstract
- Allozyme variation in the forest grass Milium effusum L. was studied in 21-23 populations within each of two equally sized densely sampled areas in northern and southern Sweden. In addition, 25 populations from other parts of Eurasia were studied for comparison. The structure of variation was analysed with both diversity statistics and measures based on allelic richness at a standardised sample size. The species was found to be highly variable, but no clear geographic patterns in the distribution of alleles or in overall genetic differentiation were found, either within the two regions or within the whole sample. Thus, no inferences about the direction of postglacial migration could be made. Obviously, migration and gene flow must have... (More)
- Allozyme variation in the forest grass Milium effusum L. was studied in 21-23 populations within each of two equally sized densely sampled areas in northern and southern Sweden. In addition, 25 populations from other parts of Eurasia were studied for comparison. The structure of variation was analysed with both diversity statistics and measures based on allelic richness at a standardised sample size. The species was found to be highly variable, but no clear geographic patterns in the distribution of alleles or in overall genetic differentiation were found, either within the two regions or within the whole sample. Thus, no inferences about the direction of postglacial migration could be made. Obviously, migration and gene flow must have taken place in a manner capable of randomising the distribution of alleles. However, there were clear differences in levels and structuring of the variation between the two regions. Levels of variation, both in terms of genetic diversity and allelic richness, were lower in northern Sweden as compared with southern Sweden. In contrast, different measures of geographic structure all showed higher levels of population differentiation in the northern region. This is interpreted as due to different geomorphological conditions in the two regions, creating a relatively continuous habitat and gene flow in the southern region as compared with the northern region where the species, although common, is confined to narrow and mutually isolated corridors in the landscape. (Less)
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/137714
- author
- Tyler, Torbjörn LU
- organization
- publishing date
- 2002
- type
- Contribution to journal
- publication status
- published
- subject
- keywords
- allelic richness, allozymes, geographic differentiation, Milium effusum, population fragmentation
- in
- Genome
- volume
- 45
- issue
- 6
- pages
- 1248 - 1256
- publisher
- Canadian Science Publishing, NRC Research Press
- external identifiers
-
- pmid:12502271
- wos:000179862100029
- scopus:1842854779
- ISSN
- 0831-2796
- DOI
- 10.1139/g02-079
- language
- English
- LU publication?
- yes
- additional info
- The information about affiliations in this record was updated in December 2015. The record was previously connected to the following departments: Plant Ecology and Systematics (Closed 2011) (011004000)
- id
- ab804292-d874-4827-a661-64ba132dd979 (old id 137714)
- date added to LUP
- 2016-04-01 11:37:38
- date last changed
- 2022-02-25 18:56:39
@article{ab804292-d874-4827-a661-64ba132dd979,
abstract = {{Allozyme variation in the forest grass Milium effusum L. was studied in 21-23 populations within each of two equally sized densely sampled areas in northern and southern Sweden. In addition, 25 populations from other parts of Eurasia were studied for comparison. The structure of variation was analysed with both diversity statistics and measures based on allelic richness at a standardised sample size. The species was found to be highly variable, but no clear geographic patterns in the distribution of alleles or in overall genetic differentiation were found, either within the two regions or within the whole sample. Thus, no inferences about the direction of postglacial migration could be made. Obviously, migration and gene flow must have taken place in a manner capable of randomising the distribution of alleles. However, there were clear differences in levels and structuring of the variation between the two regions. Levels of variation, both in terms of genetic diversity and allelic richness, were lower in northern Sweden as compared with southern Sweden. In contrast, different measures of geographic structure all showed higher levels of population differentiation in the northern region. This is interpreted as due to different geomorphological conditions in the two regions, creating a relatively continuous habitat and gene flow in the southern region as compared with the northern region where the species, although common, is confined to narrow and mutually isolated corridors in the landscape.}},
author = {{Tyler, Torbjörn}},
issn = {{0831-2796}},
keywords = {{allelic richness; allozymes; geographic differentiation; Milium effusum; population fragmentation}},
language = {{eng}},
number = {{6}},
pages = {{1248--1256}},
publisher = {{Canadian Science Publishing, NRC Research Press}},
series = {{Genome}},
title = {{Geographic structure of genetic variation in the widespread woodland grass Milium effusum L. A comparison between two regions with contrasting history and geomorphology}},
url = {{https://lup.lub.lu.se/search/files/2567076/624672.pdf}},
doi = {{10.1139/g02-079}},
volume = {{45}},
year = {{2002}},
}