Journal
PLANT BIOSYSTEMS
Volume 143, Issue 3, Pages 528-542Publisher
TAYLOR & FRANCIS LTD
DOI: 10.1080/11263500902722964
Keywords
Cluster analysis; phylogenetic relationships; proteomics; species concept; systematics
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Funding
- Belgian Funds for Scientific Research (F.R.S.-FNRS)
- Gembloux Agricultural University (FUSAGx, Belgium)
- FWO (Fonds voor Wetenschappelijk Onderzoek)
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Species delimitation is fundamental in many areas of biology. Despite its importance, there is no agreement on criteria for species delimitation mostly due to divergence on the point of view adopted by the different biological disciplines. Two main groups of diagnostic characters are commonly used to distinguish species: the traditional morphological ones and the molecular ones. Field species recognition and sampling are generally based on morphological characters, but they can either fail to discriminate species and mask the presence of cryptic species or discriminate different species while in reality there is only one. To overcome this problem it is common to compare clusters obtained on the basis of the observed polymorphism of both characters, and to analyse their agreement. Here we compile a set of studies that have examined species delimitation with both markers. This provides a review of the different morphological and molecular markers, and of the sampling strategy and clustering methodology generally employed to delimitate species. Some conclusions are drawn with regard to species delimitation, when comparing diagnostic morphological and molecular markers.
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