Annals of Botany 89: 321-327, 2002
© 2002 Annals of Botany Company
Testing Taxonomic and Biogeographical Relationships in a Narrow Mediterranean Endemic Complex (Hippocrepis balearica) using RAPD Markers
1Jardín Botánico de Valencia, Universidad de Valencia, c/Quart 80, E-46008, Valencia, Spain and 2CREAF, Universitat Autònoma de Barcelona, E-08193 Bellaterra, Barcelona, Spain
* For correspondence. Fax +34 963156826, e-mail rossello@uv.es
Received: 18 May 2001; Returned for revision: 2 September 2001; Accepted: 3 December 2001.
Analyses of RAPD profiles from 17 populations of the Hippocrepis balearica complex revealed a highly structured geographic pattern, not only among continentalinsular areas but also within the eastern Balearic islands. In marked contrast to previous morphometric results, a clear separation between continental and insular samples was found, and intermediates between H. balearica and H. valentina samples were not detected. Molecular data indicated that western and eastern Balearic populations of the complex (H. grosii and H. balearica) were more closely related to each other than to continental populations (H. valentina). Multivariate analyses of the RAPD data clearly indicated that the similarities between continental and eastern Balearic samples of the H. balearica complex recovered by morphometric methods are due either to parallel evolution or to retention of plesiomorphic features.
Key words: Hippocrepis balearica, Hippocrepis grosii, Hippocrepis valentina, interspecific variation, species boundaries, Mediterranean flora, vicariant taxa, DNA fingerprinting.
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