La Tour du Valat

Institut de recherche pour la conservation des zones humides méditerranéennes

Titre :	Taxonomic and evolutionary implications of intraspecific variability in chromosome numbers of species of Leucaena Benth. (Leguminosae)
Auteurs :	Milena Barcelos Cardoso, Auteur ; Maria Teresa Schifino-Wittmann, Auteur ; Maria Helena Bodanese-Zanettini, Auteur
Type de document :	Article
Dans :	Botanical Journal of the Linnean Society (134(4) 2000-12-01)
Article en page(s) :	549-556
Résumé :	Chromosome numbers were determined in 52 individuals of 14 taxa of Leucaena Benth. from 22 populations. For L. cuspidata and L. lempirana these are the first published chromosome counts. Intraspecific variability was found for L. lempirana, L. macrophylla and L. shanonii, and one diploid population of the tetraploid species L. pallida was identified. Comparison of our data with those in the literature showed that for L. collinsii and L. macrophylla there is a relationship between chromosome number and subspecies delimitation. The variability detected in chromosome numbers shows the complexity of the diploid and tetraploid species evolution, and suggests multiple origins for some of the polyploid taxa.
En ligne :	https://doi.org/10.1111/j.1095-8339.2000.tb00550.x

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