Patterns of introduction and diversification of Vanilla planifolia (Orchidaceae) in Reunion Island (Indian Ocean)
| Autor: | Séverine Bory, Pesach Lubinsky, Michel Grisoni, Pascale Besse, Marie-France Duval, Jean-Louis Noyer, Ange-Marie Risterucci |
|---|---|
| Přispěvatelé: | Peuplements végétaux et bioagresseurs en milieu tropical (UMR PVBMT), Centre de Coopération Internationale en Recherche Agronomique pour le Développement (Cirad)-Institut de Recherche pour le Développement (IRD)-Institut National de la Recherche Agronomique (INRA)-Université de La Réunion (UR), University of California [Riverside] (UCR), University of California, Développement et amélioration des plantes (UMR DAP), Centre National de la Recherche Scientifique (CNRS)-Université Montpellier 2 - Sciences et Techniques (UM2)-Institut National de la Recherche Agronomique (INRA)-Centre de Coopération Internationale en Recherche Agronomique pour le Développement (Cirad), Amélioration génétique d'espèces à multiplication végétative (Cirad-Bios-UPR 75 Multiplication végétative), Département Systèmes Biologiques (Cirad-BIOS), Centre de Coopération Internationale en Recherche Agronomique pour le Développement (Cirad)-Centre de Coopération Internationale en Recherche Agronomique pour le Développement (Cirad), Amélioration génétique d'espèces à multiplication végétative (UPR Multiplication végétative), Centre de Coopération Internationale en Recherche Agronomique pour le Développement (Cirad) |
| Jazyk: | angličtina |
| Rok vydání: | 2008 |
| Předmět: |
0106 biological sciences
Pollination Polymorphisme génétique Phénotype Plant Science 01 natural sciences F30 - Génétique et amélioration des plantes Crop 03 medical and health sciences Variation génétique Pollinator Multiplication végétative Botany Genetics [SDV.BV]Life Sciences [q-bio]/Vegetal Biology Cultivar Vanilla Ecology Evolution Behavior and Systematics 030304 developmental biology 2. Zero hunger 0303 health sciences Orchidaceae Genetic diversity biology Ecology Vanilla planifolia F70 - Taxonomie végétale et phytogéographie biology.organism_classification Sexual reproduction 010606 plant biology & botany |
| Zdroj: | American Journal of Botany American Journal of Botany, Botanical Society of America, 2008, 95 (7), pp.805--815. ⟨10.3732/ajb.2007332⟩ |
| ISSN: | 0002-9122 |
| DOI: | 10.3732/ajb.2007332⟩ |
| Popis: | International audience; The cultivated species Vanilla planifolia is a typical example of a crop introduced from its area of origin (America) to new regions where natural pollinators are absent. Although the Vanilla cultivars are exclusively vegetatively propagated, a high degree of phenotypic variation is observed among the cultivars in their introduction areas such as Reunion Island. To test several hypotheses explaining this variation-different introduction events, somatic mutations and sexual reproduction (through manual pollination)-we used AFLP markers to elucidate the patterns of introduction of V. planifolia. Most of the accessions cultivated in the world were derived from a single accession, possibly the Mexican cultivar Mansa. The patterns of diversification of this cultivated species were also studied and compared with other cultivated (V. tahitensis) and wild (V. pompona and V. bahiana) species. Except for one particular phenotype ('Aiguille'), which may come from sexual reproduction, cultivated accessions exhibit very low levels of genetic diversity. They have evolved by the accumulation of point mutations through vegetative multiplication. The genetic diversity revealed could not explain the phenotypic diversity, which may be related to epigenetics or polyploidy. This new understanding of the basis of genetic diversity of vanilla may assist to improve management of genetic resources. (Résumé d'auteur) |
| Databáze: | OpenAIRE |
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