Recurrent selection of tropical tree crops

Baudouin Luc, Baril C., Clément-Demange André, Leroy Thierry, Paulin Didier. 1997. Recurrent selection of tropical tree crops. Euphytica, 96 : 101-114. EUCARPIA meeting on tropical plants, Montpellier, France, 11 Mars 1996/15 Mars 1996.

Autre titre : Sélection récurrente des arbres tropicaux

Résumé : Synthèse des travaux entrepris en matière d'amélioration et de sélection pour 6 arbres tropicaux : le cacaoyer, le caféier, l'hévéa, le palmier à huile, le cocotier et l'eucalyptus. Pour chaque plante étudiée, un bref aperçu de contexte est suivi d'une description des options choisies dans le cadre d'un schéma de sélection récurrente réciproque et complété par un résumé des résultats obtenus

Résumé (autre langue) : The recurrent selection schemes recommended by CIRAD for 6 tropical tree crops are presented and compared. Breeding programmes are carried out under cooperation between CIRAD and its partners in regions where the crops are grown. The crops are cacao, coffee, rubber tree, oil palm, coconut and eucalyptus. After a short look at the background, the reasons behind the options chosen are given and the main characteristics of the schemes are described and illustrated. The state of progress and some major results are discussed. Over and above the differences linked to plant biology, the genetic diversity available and the type of varietal output, common characteristics are emphasized. The time taken for each generation means simplifying the intercrossing phases between successive breeding cycles, and thus, the parents tested are heterozygous: whenever possible, a clonal varietal output is an additional source of progress. The use of biotechnologies to study diversity is a valuable asset, and their application for early selection (QTL) is also promising. The preponderance of combining ability coexists with marked heterosis, which poses the problem of the latter's origin. As a result, all of the schemes described, but one, are reciprocal recurrent selection schemes.

Mots-clés Agrovoc : Theobroma cacao, Coffea, Hévéa, Elaeis guineensis, Cocos nucifera, Eucalyptus, génétique quantitative, sélection récurrente, méthode d'amélioration génétique

Classification Agris : F30 - Génétique et amélioration des plantes

Auteurs et affiliations

• Baudouin Luc, CIRAD-CP-Amélioration des plantes (FRA)
• Baril C.
• Clément-Demange André, CIRAD-CP-HEVEA (FRA)
• Leroy Thierry, CIRAD-CP-CAFE (FRA)
• Paulin Didier, CIRAD-CP-CACAO (FRA)

Source : Cirad - Agritrop (https://agritrop.cirad.fr/389484/)

Métriques

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