6533b85cfe1ef96bd12bd47d
RESEARCH PRODUCT
Isolation and biodiversity inCytisus villosusPourret (Fabaceae, Genisteae): enzyme polymorphism in disjunct populations
Angelo TroiaLucia ConteGiovanni Cristofolinisubject
Genetic diversitygeographygeography.geographical_feature_categoryEcologySettore BIO/02 - Botanica SistematicaBiodiversityEndangered speciesGenisteaePlant ScienceBiologyDisjunctbiology.organism_classificationAeolian islands biogeography dispersal endangered species isozymes Sicily flora evolutionlanguage.human_languageSettore BIO/03 - Botanica Ambientale E ApplicataArchipelagolanguageBiological dispersalSicilianEcology Evolution Behavior and Systematicsdescription
ABSTRACT The genetic diversity of isolated populations of Cytisus villosus has been studied by means of enzyme polymorphism 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 isolation of 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.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 1997-01-01 | Plant Biosystems - An International Journal Dealing with all Aspects of Plant Biology |