Molecular diversity and derivations of populations of Silene acaulis and Saxifraga oppositifolia from the high Arctic and more southerly latitudes

• DOI: 10.1111/j.1365-294x.1995.tb00209.x
• Publication Date: 2008-04-14T08:13:07Z
• Authors: R. J. ABBOTT; H. M. CHAPMAN; R. M. M. CRAWFORD; D. G. FORBES
• Keywords: Silene

Abstract A survey of allozyme diversity within and between populations Silene acaulis from Spitsbergen, Norway, Iceland Scotland, showed that the high Arctic (Spitsbergen, > 76°N) contained levels were genetically similar to more southern locations. Indirect measures gene flow ( Nm ), calculated Wrigh's F indicated there had been extensive Spitsbergen some Norwegian populations. restriction site analysis chloroplast DNA (cpDNA) in S. revealed all a single identical cpDNA haplotype, except one population Norway which also second haplotype. In contrast, five different haplotypes distinguished limited variation Saxifraga oppositifolia , with present two surveyed. The contrasting results for species suggest whereas high‐Arctic have most likely derived immigrants arrived south after last glacial period, may be derived, part, ancient northern stocks survived glaciation refugia.