Agritrop
Home

Geographic and genetic structure of African oil palm diversity suggests new approaches to breeding

Cochard Benoît, Adon Benjamin, Rekima Samah, Billotte Norbert, Desmier De Chenon Roch, Koutou Anatole, Nouy Bruno, Omoré Alphonse, Razak Purba, Glaszmann Jean-Christophe, Noyer Jean-Louis. 2009. Geographic and genetic structure of African oil palm diversity suggests new approaches to breeding. Tree Genetics and Genomes, 5 (3) : pp. 493-504.

Journal article ; Article de revue à facteur d'impact
[img] Published version - Anglais
Access restricted to CIRAD agents
Use under authorization by the author or CIRAD.
document_549417.pdf

Télécharger (505kB)

Quartile : Q1, Sujet : FORESTRY / Quartile : Q1, Sujet : HORTICULTURE / Quartile : Q3, Sujet : GENETICS & HEREDITY

Abstract : Since the 1960s, there has been very little diversification of oil palm (Elaeis guineensis) seed production, with mainly Deli × La Mé and Deli × Congo type crosses. The Deli origin, which was introduced from Africa into Indonesia in 1848, is unavoidable in breeding. In order to understand the complementarity between the Africa and "Asia" origins, and to diversify the genetic base of oil palm production, the structure of the genetic resources involved in the history of oil palm breeding in relation to African germplasm including subspontaneous populations needs to be understood. In this study, 318 individuals from 26 origins and eight countries were analysed with 14 microsatellite loci. Descriptive and Bayesian analyses of oil palm genetic diversity (Principal Coordinates Analysis, Neighbour- Joining Tree and Structure software) revealed two original groups which reflected the discontinuity of African species at the Dahomey Gap, West Africa (Group I) on the one hand, and "Benin-Nigeria-Cameroon-Congo-Angola" (Group II) on the other hand. The Deli group (Group III), derived from group II, is the result of artificial selection (mass selection). The genetic structuring revealed showed the positive contribution of the within-population mass selection practiced in the Deli population, and explains the success of Deli × La Mé and Deli × Congo crosses. A selection strategy is proposed, based on the yet-to-beexploited complementarity that exists between the two African genetic groups and on within-group improvement. We suggest (Deli × Group II) × Group I crosses, so that group II benefits from the quality of the Deli origin. (Résumé d'auteur)

Mots-clés Agrovoc : Elaeis guineensis, Variation génétique, Provenance

Mots-clés géographiques Agrovoc : Afrique

Classification Agris : F30 - Plant genetics and breeding
F70 - Plant taxonomy and geography

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

Auteurs et affiliations

  • Cochard Benoît, CIRAD-BIOS-UMR DAP (FRA)
  • Adon Benjamin, CNRA (CIV)
  • Rekima Samah
  • Billotte Norbert, CIRAD-BIOS-UMR DAP (FRA)
  • Desmier De Chenon Roch
  • Koutou Anatole, CNRA (CIV)
  • Nouy Bruno, CIRAD-BIOS-UPR Génétique palmier (FRA)
  • Omoré Alphonse, INRAB (BEN)
  • Razak Purba, IOPRI (IDN)
  • Glaszmann Jean-Christophe, CIRAD-BIOS-DIR (FRA) ORCID: 0000-0001-9918-875X
  • Noyer Jean-Louis, CIRAD-BIOS-UMR DAP (FRA) ORCID: 0000-0002-7389-5621

Autres liens de la publication

Source : Cirad - Agritrop (https://agritrop.cirad.fr/549417/)

View Item (staff only) View Item (staff only)

[ Page générée et mise en cache le 2020-10-26 ]