Morphometric and AFLP Re-evaluation of Tetraploid Cardamine amara (Brassicaceae) in the Mediterranean
Abstract:Cardamine amara, an Eurasian species comprising several subspecies, was examined through morphometric and amplified fragment length polymorphism (AFLP) analyses to re-evaluate subspecific status of tetraploid C. amara subsp. olotensis from Catalonia (NE Spain) and to resolve the taxonomic position of Central Italian populations usually placed within C. amara and/or C. raphanifolia s. l. A presumptive close relative from the Caucasus, diploid C. wiedemanniana, was also analyzed for AFLPs. Morphometric results show Catalonian and Italian populations to be similar to each other, but distinct from other C. amara. With both principal coordinate analysis and the neighbour-joining tree based on AFLP data, three main groups are delimited: (1) tetraploid Catalonian C. amara subsp. olotensis and Italian populations, (2) all other diploid and tetraploid subspecies of C. amara, and (3) diploid C. wiedemanniana. As a result of this study, Italian and Catalonian populations are herein treated as a single species, C. amporitana, distinct from C. amara. Catalonian populations appear genetically depauperate, perhaps having experienced bottlenecks during Pleistocene glaciation, or originating via long-distance dispersal from the Apennine Peninsula.
Document Type: Research Article
Publication date: January 1, 2004
More about this publication?
- Systematic Botany is the scientific journal of the American Society of Plant Taxonomists and publishes four issues per year.
2011 Impact Factor: 1.517
2011 ISI Journal Citation Reports® Rankings: 87/190 - Plant Sciences
34/45 - Evolutionary Biology
- Editorial Board
- Information for Authors
- Submit a Paper
- Subscribe to this Title
- Membership Information
- Ingenta Connect is not responsible for the content or availability of external websites