Skip to main content

Evolution and biogeography of alpine apomictic plants

Buy Article:

$15.00 plus tax (Refund Policy)

Asexual organisms often occupy larger and more northern distribution areas than their sexual relatives, and tend to colonize more frequently previously glaciated areas. These phenomena, summarized under the term "geographical partheno - genesis", seem to imply a short-term advantage of asexual reproduction. Alpine biota, for instance, with their short growing seasons, cold climates and climatic histories shaped by glaciations are predisposed for the evolution and spread of apomictic plants. However, patterns and causes of geographical parthenogenesis for alpine species remain elusive, and for many alpine taxa the mode of reproduction is only poorly characterized. A survey of apomictic species in the European Alps presents some examples and case studies on geographical parthenogenesis. The distribution pattern may be explained by better colonizing abilities of asexual organisms because of uniparental reproduction. Apomixis has been advantageous for re-colonization of the Alps after the retreat of glaciers, because of their ability to rapidly found populations via single individuals (Baker's Law). Asexual organisms also may perform better in diverse and narrow ecological niches. The distributional superiority of asexuals has also been attributed to indirect advantages of hybridity and/or polyploidy. Sexual hybrids or polyploids, however, when compared to sexual diploid progenitors, do not show patterns of geographical parthenogenesis. However, in the Alps, climatic oscillations may have triggered range fluctuations of species and breakdown of crossing barriers. Interspecific hybridization and polyploidy may have spurred recurrent origins of asexuality, while decreasing the fitness of sexual progenitor species. Biogeographical history in combination with the intrinsic advantages of apomixis may explain best the relative success of alpine apomictic plants.
No Reference information available - sign in for access.
No Citation information available - sign in for access.
No Supplementary Data.
No Article Media
No Metrics


Document Type: Research Article

Affiliations: Department of Systematic and Evolutionary Botany, University of Vienna, Rennweg 14, 1030 Vienna, Austria

Publication date: 2011-04-01

  • Access Key
  • Free content
  • Partial Free content
  • New content
  • Open access content
  • Partial Open access content
  • Subscribed content
  • Partial Subscribed content
  • Free trial content
Cookie Policy
Cookie Policy
Ingenta Connect website makes use of cookies so as to keep track of data that you have filled in. I am Happy with this Find out more