Authors: JU Malm HC Prentice
Publish Date: 2004/11/10
Volume: 250, Issue: 1-2, Pages: 27-38
Abstract
Analysis of PCR/RFLP variation in 57 Nordic populations of the herb Silene dioica revealed 13 composite chloroplast DNA cpDNA haplotypes The geographic distribution of the haplotypes suggests that the postglacial colonization of Fennoscandia by S dioica may have involved immigration of populations from two main directions The commonest cpDNA haplotype dominates in populations throughout most of Finland and northern and central Sweden but is absent from southern Sweden The distribution of this haplotype is interpreted in terms of immigration from an eastern or northern direction In contrast eight haplotypes that are absent from northern Fennoscandia are represented in populations in southern Sweden and in Denmark suggesting colonization by populations derived from one or several refugial areas further to the south in Europe The overall NESW pattern of cpDNA haplotype variation is similar to but less diffuse than the pattern revealed by allozyme markersWe would like to thank T Tyler L and K Malm A Kejonen A and C Hutchison H Vähätalo J Lindeberg O Jonsson L Lundberg and H Tegelström for field assistance and/or collecting seeds J and E Malm helped to organize the fieldwork We are grateful to M Hedrén A Palmé M Jaarola C Brunhoff and Y Ng for discussions and statistical advice to N J Ouborg K Wolff and A Thell for sharing their lab protocols and to K Wolff and H Nybom for commenting on an earlier version of the manuscript The study was funded by grants to JUM from Enanderska fonden Kungliga Vetenskapsakademien Jubileumsfonden and Henning Weimarcks fond Lunds Botaniska Förening and to HCP from NFR The Swedish Natural Sciences Research Council
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