Agritrop
Home

Study of tree-to-tree yield variability among seedling-based cacao populations in an industrial plantation in côte d'ivoire

Wibaux Thomas, Konan Dany-Claude, Snoeck Didier, Jagoret Patrick, Bastide Philippe. 2018. Study of tree-to-tree yield variability among seedling-based cacao populations in an industrial plantation in côte d'ivoire. Experimental Agriculture, 54 (5) : pp. 719-730.

Journal article ; Article de recherche ; Article de revue à facteur d'impact
[img] Version Online first - Anglais
Access restricted to CIRAD agents
Use under authorization by the author or CIRAD.
study_of_treetotree_yield_variability_among_seedlingbased_cacao_populations_in_an_industrial_plantation_in_cote_divoire.pdf

Télécharger (317kB) | Request a copy
[img] Published version - Anglais
Access restricted to CIRAD agents
Use under authorization by the author or CIRAD.
study_of_treetotree_yields.pdf

Télécharger (312kB) | Request a copy

Quartile : Q1, Sujet : AGRONOMY

Abstract : In Côte d'Ivoire, the world's largest cocoa producer, cacao (Theobroma cacao L.) is usually grown from seed. The genetics consist of a mix of amelonado, trinitario and selected hybrids. This mix of varieties generates high phenotypic variabilities, including variability in tree productivity, within cacao populations in both smallholder and industrial plantations. Tree-to-tree variability in yield has been reported in cacao breeding trials under different environmental conditions. However, it has never been considered a limiting factor for agronomical performance of seedling-based cacao plantations. Around 10 000 cacao trees from seven plots under different environmental conditions in a cacao plantation in Côte d'Ivoire were monitored for 2 years. Pod production of individual trees was recorded and annual average tree pod yields were assessed. High heterogeneity in cacao-tree yields was observed in all plots, with coefficients of variation ranging from 56 to 102%. The distribution of cacao-tree yields in each plot was positively skewed. Analysis of these distributions showed that unproductive trees represented a significant proportion of cacao tree populations (7%), and the 20% least productive trees accounted for 3% of production. The 20% most productive trees were responsible for 46% of the total pod production of a plot. This heterogeneity reflects a major imbalance in the agronomical performances of low- and high-yielding trees and also represents possible efficiency gaps in seedling-based cacao plantations, which could be overcome through innovative corrective strategies, opening new pathways for improvement of cacao-based cropping systems. (Résumé d'auteur)

Mots-clés Agrovoc : Theobroma cacao, Culture de rapport, Productivité, Rendement des cultures, Sélection artificielle, Sélection individuelle, Hybridation, Phénotype, Plant

Mots-clés géographiques Agrovoc : Côte d'Ivoire

Mots-clés libres : Cacao, Côte d'Ivoire, Cacao seedlings, Yield variability, Yield distribution, Sustainable intensification

Classification Agris : F01 - Crop husbandry
F30 - Plant genetics and breeding

Champ stratégique Cirad : Axe 1 (2014-2018) - Agriculture écologiquement intensive

Auteurs et affiliations

  • Wibaux Thomas, CIRAD-PERSYST-UPR Systèmes de pérennes (FRA) - auteur correspondant
  • Konan Dany-Claude, Société Agricole du Bandama (CIV)
  • Snoeck Didier, CIRAD-PERSYST-UPR Systèmes de pérennes (FRA)
  • Jagoret Patrick, CIRAD-PERSYST-UMR SYSTEM (FRA)
  • Bastide Philippe, CIRAD-PERSYST-UPR Systèmes de pérennes (FRA)

Source : Cirad-Agritrop (https://agritrop.cirad.fr/585117/)

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

[ Page générée et mise en cache le 2020-10-15 ]