par Lauranson, Josiane;Jay, Maurice;Vekemans, Xavier ;Lefebvre, Claude
Référence Biochemical systematics and ecology, 23, 3, page (319-329)
Publication Publié, 1995
Article révisé par les pairs
Résumé : The leaf flavonoid content in individuals of Armeria maritima originating from populations with contrasted ecogeographical situations and belonging to seven distinct intraspecific taxa, is highly variable both quantitatively and qualitatively. Principal component analysis and comparison of frequency of individual flavonoid profiles show that congruence between classical taxonomic units and flavonoid pattern of variation is only circumstantial. The level of variability in flavonoids for ecogeographical groups of populations decrease in relation to change in breeding system from xenogamy to autogamy and to strong selection pressures (heavy metal toxicity). Populations within ecogeographical groups are significantly distinct for their level of variability. © 1995.