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Evidence of spontaneous triploidy in cassava (Manihot esculenta Crantz) : [SP05-04, D09]

Sardos Julie, Rodier-Goud Marguerite, Triaire Dolorès, Dambier Dominique, Malapa Roger, Noyer Jean-Louis, Lebot Vincent. 2008. Evidence of spontaneous triploidy in cassava (Manihot esculenta Crantz) : [SP05-04, D09]. In : Cassava : Meeting the challenges of the new millennium. Proceedings of the first scientific meeting of the global cassava partnership. Donald Danforth Plant Science Center, Université de Gand, IPBO. Saint Louis : DDPSC, Résumé, 2 p. ISBN 978-0-9720723-3-5 Cassava Meeting the Challenges of the New Millenium. 1, Ghent, Belgique, 21 July 2008/25 July 2008.

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Abstract : Cassava originated from South America but is now cultivated all over the tropics and is an important crop for food and industrial processing. Polyploidy is a natural mechanism largely used in crop improvement, but spontaneous polyploidy has never been reported in strictly #Manihot esculenta# individuals. In the past, hybridization with wild relatives and chemical treatment has led to successful creation of triploids and tetraploids that were vigorous and gave high yields of starch but were not suitable for cooking. We report here on the discovery of two strictly #M. esculenta# spontaneous triploid clones that were selected, conserved and propagated by farmers in Vanuatu (Oceania, South Pacific). These two clones were grown in traditional home-gardens and are highly appreciated for domestic uses. Considering their phenotypes, we suspected polyploidization. Flow cytometry and cytogenetic chromosome counting were used to confirm this hypothesis. Finally, a set of 11 SSR markers was used to establish the #M. esculenta# origin of these clones. (Résumé d'auteur)

Mots-clés Agrovoc : Triploïdie, Manihot esculenta

Mots-clés géographiques Agrovoc : Vanuatu

Classification Agris : F30 - Plant genetics and breeding

Auteurs et affiliations

  • Sardos Julie, CIRAD-BIOS-UMR DAP (FRA)
  • Rodier-Goud Marguerite, CIRAD-BIOS-UMR DAP (FRA)
  • Triaire Dolorès, CIRAD-BIOS-UMR DAP (FRA)
  • Dambier Dominique
  • 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)

Autres liens de la publication

Source : Cirad - Agritrop (https://agritrop.cirad.fr/553058/)

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