Evidence for spontaneous polyploidization in cassava Manihot esculenta Crantz

Sardos Julie, Rodier-Goud Marguerite, Dambier Dominique, Malapa Roger, Noyer Jean-Louis, Lebot Vincent. 2009. Evidence for spontaneous polyploidization in cassava Manihot esculenta Crantz. Plant Systematics and Evolution, 283 (3-4) : 203-209.

Quartile : Q2, Sujet : PLANT SCIENCES / Quartile : Q4, Sujet : EVOLUTIONARY BIOLOGY

Résumé : Cassava, Manihot esculenta Crantz (Euphorbiaceae), is a major tropical crop. It is a diploid and sexually fertile, but confined to vegetative propagation in agriculture. While polyploidization is a major evolutionary process in higher plants and is of importance in the creation of improved crop varieties, spontaneous polyploidization is poorly documented for M. esculenta. Molecular and cytological evidence is provided here for two cases of intraspecific triploidization events that occurred in smallholders' fields in Vanuatu, South Pacific. We then discuss the implications of triploidy for the crop and highlight the importance of this discovery for the evolution of this species in traditional cropping systems.

Mots-clés Agrovoc : Manihot esculenta

Mots-clés géographiques Agrovoc : Vanuatu

Classification Agris : F30 - Génétique et amélioration des plantes
F60 - Physiologie et biochimie végétale
F70 - Taxonomie végétale et phytogéographie

Champ stratégique Cirad : Axe 1 (2005-2013) - Intensification écologique

Auteurs et affiliations

• Sardos Julie
• Rodier-Goud Marguerite, CIRAD-BIOS-UMR DAP (FRA)
• Dambier Dominique, CIRAD-BIOS-UPR Multiplication végétative (FRA) ORCID: 0000-0002-9117-8853
• Malapa Roger, VARTC (VUT)
• Noyer Jean-Louis, CIRAD-BIOS-UMR DAP (FRA) ORCID: 0000-0002-7389-5621
• Lebot Vincent, CIRAD-BIOS-UPR Multiplication végétative (VUT)

Source : Cirad - Agritrop (https://agritrop.cirad.fr/552398/)

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