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Genetic variation in British Campanula rotundifolia L.

Telford, Annika; Cavers, Stephen; Shepherd, Jess; Wilson, Julia. 2011 Genetic variation in British Campanula rotundifolia L. [Poster] In: Pop Group 45, Population Genetics Group, Nottingham, 18-21 December 2011. (Unpublished)

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Abstract/Summary

The harebell (Campanula rotundifolia) is a short‐lived perennial native to the British Isles, where tetraploid, hexaploid and (rarely) pentaploid types occur. The hexaploid and tetraploid cytotypes show geographic separation; hexaploids are largely restricted to Ireland and the west coast of Britain. Here, we analyse morphometric and molecular genetic variation in harebell populations from across Britain and from three European locations, and assess quantitative genetic variation in phenology through a common garden trial, to determine levels of diversity and divergence, and test whether phenotypic divergence is associated with geographic variation in environment. Morphometric analysis resolves tetra‐ and hexaploids. Molecular data supported the separation of the cytotypes, with unique chloroplast DNA haplotypes in each cytotype and nuclear ITS data showing a single haplotype for hexaploids but numerous haplotypes in tetraploids. The molecular divergence between cytotypes suggests possible different origins and invasion pathways since the last glacial maximum.

Item Type: Publication - Conference Item (Poster)
Programmes: CEH Topics & Objectives 2009 onwards > Biodiversity > BD Topic 2 - Ecological Processes in the Environment
CEH Sections: Watt
NORA Subject Terms: Botany
Ecology and Environment
Date made live: 18 Jul 2012 11:21
URI: http://nora.nerc.ac.uk/id/eprint/18713

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