Allozyme variation and genetic structure of Calluna vulgaris (heather) populations in Scotland: the effect of postglacial recolonization

The effect of postglacial recolonization on allozyme variation and genetic structure of Calluna vulgaris (heather) populations in Scotland is discussed based on study of populations in a landscape glaciated at one time and now with low fragmentation levels vs continental regions. Genetic differentiation was low and consistent geographical patterns were not found at the regional level, so a high rate of gene flow was likely favored by the almost continuous range of the plant across Scotland and by environmental factors in the country.