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Allozyme variation in calcicolous and silicicolous populations of Helianthemum nummularium

par Azzouzi, Khalid ;Vekemans, Xavier ;Meerts, Pierre Jacques ;Lefebvre, Claude
Référence Belgian journal of botany, 129, page (101-106)
Publication Publié, 1997

Article révisé par les pairs

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Résumé :

Allozyme variation in Belgian populations of Helianthemum nummularium (L.) Mill., growing on calcareous or siliceous bedrocks has been investigated. High levels of intrapopulation variation but very low levels of differentiation among populations were observed. It is suggested that important gene flow occurs among populations or that the sampled populations of H. nummularium have been recently derived from a common ancestor. No significant difference between calcicolous and silicicolous populations in genetic variation within populations was found, whereas low, but significant, differentiation between the two groups was present.