Contrasting patterns of genetic diversity in neutral markers and agromorphological traits in wild and cultivated populations of Medicago sativa L. from Spain

Crop/weed gene flow is often of great concern for a better understanding of germplasm diversity. This paper provides an overview of the levels and partition of genetic diversity assessed between wild and cultivated populations of Medicago sativa L. in Spain for both molecular markers and agromorphol...

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Published inGenetics selection evolution (Paris) Vol. 30; no. Suppl 1; pp. S103 - S119
Main Authors JENCZESKI, E, ANGEVAIN, M, CHARRIER, A, GENIER, G, RONFORT, J, PROSPERI, J.-M
Format Conference Proceeding Journal Article
LanguageEnglish
German
Published Les Ulis EDP Sciences 15.12.1998
BioMed Central Ltd
BioMed Central
BMC
Subjects
Alfalfa
Biological and medical sciences
Biological diversity
Classical genetics, quantitative genetics, hybrids
Fundamental and applied biological sciences. Psychology
Genetic diversity
Genetics of eukaryotes. Biological and molecular evolution
Medicago sativa
Pteridophyta, spermatophyta
Vegetals
Europe
Spain
Genetic marker
Medicago sativa
Genetic diversity
Population genetics
Gene flow
Germplasm
Leguminosae
Dicotyledones
Angiospermae
Wild plant
Spermatophyta
Fodder crop
Cultivated plant
Polymorphism
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Summary:Crop/weed gene flow is often of great concern for a better understanding of germplasm diversity. This paper provides an overview of the levels and partition of genetic diversity assessed between wild and cultivated populations of Medicago sativa L. in Spain for both molecular markers and agromorphological traits. We report that most wild populations preserve a great agronomic and morphological originality despite their occasional parapatry with cultivated forms and the occurrence of crop/weed gene flow in many locations. However, populations that display either a continuous range of intermediate plants between the typical wild and cultivated forms, or a mosaic of individuals that can be assigned to each gene pool respectively, were also identified. Providing that reproductive isolation is not strict, we hypothesise that contrasted selective pressure between wild and cultivated populations mainly accounted for the maintenance of their phenotypic integrity.
Bibliography:ObjectType-Article-2
SourceType-Scholarly Journals-1
ObjectType-Feature-1
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ISSN:0999-193X
1297-9686
1297-9686
DOI:10.1186/1297-9686-30-S1-S103