Restrepo Maria Teresa, Coppens D'Eeckenbrugge Géo, Jimenez Daniel Ricardo, Vega Jorge. 2005. Morphological diversity of mountain papayas (Vasconcellea spp.) in Ecuador. Proceedings of the Interamerican Society for Tropical Horticulture, 48 : 119-123. Annual Meeting of the Interamerican Society for Tropical Horticulture. 50, Limon, Costa Rica, 7 Octobre 2004/11 Octobre 2004.
Résumé : Babaco is the most important fruit crop among Ecuadorian mountain papayas. It belongs to Vasconcellea x heilbornii, which also includes plants with smaller fruit and interesting commercial perspectives, the baby-babacos. It is supposedly a hybrid between two occasionally cultivated species, V. stipulata and V. cundinamarcensis. Forty-three accessions of the three species were gathered in the collection of the University of Ambato, and characterized morphologically, using a list of 30 qualitative and 28 quantitative descriptors. The resulting data were submitted to factorial analyses and cluster analysis. Two types of babybabacos were identified on the basis of stipule and floral traits. One of them appeared closer to V. cundinamarcensis, suggesting varying degrees of introgression between the presumed parental species. Babacos and both types of babybabacos were separated in two or more distinct groups, showing a variation unexpected for vegetatively propagated crops. This differentiation shows an important geographic component. Once simply considered a sterile interspecific hybrid, the babaco appears submitted to a dynamic evolution and diversification process, which should be taken into account for creative hybrid breeding.
Classification Agris : F30 - Génétique et amélioration des plantes
Champ stratégique Cirad : Axe 1 (2005-2013) - Intensification écologique
Auteurs et affiliations
- Restrepo Maria Teresa, IPGRI (ITA)
- Coppens D'Eeckenbrugge Géo, CIRAD-FLHOR-ARF (COL)
- Jimenez Daniel Ricardo, IPGRI (ITA)
- Vega Jorge, Universidad Técnica de Ambato (ECU)
Autres liens de la publication
- Document en bibliothèque
- Localisation du document : CD_BR13235 [(Bibliothèque de Lavalette)]
Source : Cirad - Agritrop (https://agritrop.cirad.fr/534715/)
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