doi:10.1017/S1477200007002423 Printed in the United Kingdom C © The Natural History Museum
Towards understanding the dynamics of hybridization and apomixis in the evolution of the genus Boechera (Brassicaceae) Abstract We have reviewed past and recent research on the radiation of the North American genus Boechera (Brassicaceae), and discuss future prospects for our un-derstanding of the e...
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| Format: | Text |
| Language: | English |
| Published: |
2004
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| Online Access: | http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.452.2927 http://rubus.bot.uni-heidelberg.de/Koch/Publikationen/NO-71-Boechera-apomixis.pdf |
| Summary: | Towards understanding the dynamics of hybridization and apomixis in the evolution of the genus Boechera (Brassicaceae) Abstract We have reviewed past and recent research on the radiation of the North American genus Boechera (Brassicaceae), and discuss future prospects for our un-derstanding of the evolutionary processes and patterns of differentiation in this highly polymorphic genus. Boechera comprises about 80 biennial to perennial spe-cies of exclusively North American and Greenlandic distribution. Hybridization and apomixis, in conjunction with polyploidy, were found to play a major role in the origin and maintenance of intraspecific and interspecific polymorphism. However, taxonomic classification within the genus has mainly been based on morphological characters, and diagnostic features discriminating between taxa are often limited. Molecularmarkers are promising tools for: the assessment of infrageneric phylogen-etic relationships, the isolation of basal sexual taxa, the detection of hybridization |
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