Isolation and biodiversity in Cytisus villosus Pourret (Fabaceae, Genisteae): enzyme polymorphism in disjunct populations

Angelo Troia, Angelo Troìa, Giovanni Cristofolini, Lucia Conte

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10 Citazioni (Scopus)

Abstract

The genetic diversity of isolated populations of Cytisus villosus has been studied by means of enzyme polymorpliism analysis. Two types of isolated populations were studied: "terrestrial islands" in Sicily, and "true islands" in the Aeolian archipelago. In the populations of "true islands" the number of alleles and the heterozygosity are lower than in "terrestrial islands". Isolation amongst Sicilian populations seems to be more recent than isolationof the Aeolian populations, and may be attributed to climatic changes which occurred during the Holocene and/or to human activities. The disjunction of the Aeolian populations seems much more recent than the origin of the isles themselves; the colonization of the archipelago is attributed to a single, recent dispersal event not followed by local evolution. In view of the biological structure of the Aeolian populations, C. villosus must be regarded as a locally endangered species.
Lingua originaleEnglish
pagine (da-a)93-101
Numero di pagine9
RivistaPLANT BIOSYSTEMS
Volume131
Stato di pubblicazionePublished - 1997

All Science Journal Classification (ASJC) codes

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  • ???subjectarea.asjc.1100.1110???

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