In: Annals of Botany, 2012, vol. 110, no. 3, p. 615-627
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In: Annals of Botany, 2012, vol. 110, no. 5, p. 977-986
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In: Annals of Botany, 2008, vol. 101, no. 7, p. 919-927
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In: Ecosphere, 2016, vol. 7, no. 9, p. -
Polyploidy is considered to be a major source of genetic diversity in plants. Genome duplication has been shown repeatedly to be associated with changes in biotic interactions, but little is known about whether species traits such as herbivore resistance consistently change with increasing ploidy level among closely related plant species. We tested whether larval survival and performance of...
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In: Ecology, 2013, vol. 94, no. 5, p. 1005–1014
The evolution of optimal life history strategies is central for the fitness of organisms in a given environment. Besides divergent selection, other factors may determine regional patterns of differentiation and contribute to life history evolution. In a common-garden environment over three years, we examined life history differentiation across different eco-geographical regions and effects of a...
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In: Annals of Botany, 2012, p. -
Background and Aims: In a mixed-ploidy population, strong frequency-dependent mating will lead to the elimination of the less common cytotype, unless prezygotic barriers enhance assortative mating. However, such barriers favouring cytotype coexistence have only rarely been explored. Here, an assessment is made of the mechanisms involved in formation of mixed-ploidy populations and coexistence...
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In: International Journal of Plant Sciences, 2011, vol. 172, no. 3, p. 386-402
The taxonomy of the Centaurea stoebe complex is controversial. Diploid and tetraploid plants occur in its native European range, but to date only tetraploids have been recorded from its introduced range in North America. We examined morphological differentiation of C. stoebe using multivariate and univariate approaches to clarify the taxonomic status of the known cytotypes. We measured more...
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