Diploid ancestors of triploid export banana cultivars : Molecular indentification of 2n restitution gamete donors and n gamete donors

Raboin Louis-Marie, Carreel Françoise, Noyer Jean-Louis, Baurens Franc-Christophe, Horry Jean-Pierre, Bakry Frédéric, Tézenas Du Montcel Hugues, Ganry Jacky, Lanaud Claire, Lagoda Pierre. 2005. Diploid ancestors of triploid export banana cultivars : Molecular indentification of 2n restitution gamete donors and n gamete donors. Molecular Breeding, 16 (4) : pp. 333-341.

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Abstract : The origin of triploid export banana cultivars was investigated. They all belong to Cavendish and Gros Michel subgroups of triploid clones and have a monospecific Musa acuminata origin. The appearance of these cultivars is thought to be result of hybridization between partially sterile diploid cultivars producing non reduced gametes and fertile diploids producing normal haploid gametes. To trace these diploid ancestors we compared the RFLP patterns, revealed by 36 probe/enzyme combinations, of 176 diploid clones representing the worldwide available variability with that of clones from the Cavendish and Gros Michel subgroups. This lead us to the identification of the common putative diploid ancestor of cultivars from Cavendish and Gros Michel subgroups which contributed to triploid cultivar formation through the production of 2n restitution gametes. For cultivars of Gros Michel subgroup we also propose a normal gamete donor that may have complemented the triploid allele set. (Résumé d'auteur)

Mots-clés Agrovoc : Musa acuminata, Variété, Identification, Biodiversité, Phylogénie, Diploïdie, RFLP, Triploïdie

Classification Agris : F30 - Plant genetics and breeding

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

Auteurs et affiliations

  • Raboin Louis-Marie, CIRAD-AMIS-UMR PVBMT (REU)
  • Carreel Françoise, CIRAD-FLHOR-UPR Multiplication végétative (GLP)
  • Noyer Jean-Louis, CIRAD-AMIS-UMR PIA (FRA) ORCID: 0000-0002-7389-5621
  • Baurens Franc-Christophe, CIRAD-AMIS-UMR PIA (FRA) ORCID: 0000-0002-5219-8771
  • Horry Jean-Pierre, CIRAD-FLHOR-UPR Multiplication végétative (MTQ)
  • Bakry Frédéric, CIRAD-FLHOR-UPR Multiplication végétative (FRA)
  • Tézenas Du Montcel Hugues
  • Ganry Jacky, CIRAD-FLHOR-DIR (FRA)
  • Lanaud Claire, CIRAD-AMIS-UMR PIA (FRA) ORCID: 0000-0001-6411-7310
  • Lagoda Pierre, AIEA (AUT)

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