Agritrop
Accueil

Wild cacao trees (Theobroma cacao L.) in French Guiana

Lachenaud Philippe. 2015. Wild cacao trees (Theobroma cacao L.) in French Guiana. Academic Journal of Suriname (6) : 555-560. International Congress on Biodiversity of the Guiana Shield. 3, Paramaribo, Suriname, 5 Août 2013/8 Août 2013.

Article de revue ; Article de synthèse ; Article de revue sans comité de lecture
[img] Version publiée - Anglais
Accès réservé aux personnels Cirad
Utilisation soumise à autorisation de l'auteur ou du Cirad.
Lachenaud - Wild cacao trees in French Guiana - Academic Journal of Suriname - 2015-6 pp555-560.pdf

Télécharger (87kB) | Demander une copie

Url - éditeur : http://www.adekusjournal.sr/adekusjournal/website/artikel.asp?sessionid=E438A908923543B1B9349DBEF0B9B8C2&menuid=4&categorieid=4&artikelid=84

Résumé : Spontaneous cacao trees ( Theobroma cacao L.) found in south-eastern French Guiana form a particular genetic group, the “Guiana” group, which could be used in cacao breeding. Since 1987, CIRAD* has set itself the objective of collecting and characterizing those cacao trees, carrying out agronomic and sensory assessments, and studying the ir diversity. The main results acquired are presented. Four surveys took place from 1987 to 201 2 in the upper reaches of the Oyapok and Tanpok rivers. The plant material collected, from 226 moth er-trees, has been planted in a collection at CIRAD 's Sinnamary station, as open-pollinated progenies or clones. The trees are observed individually for ten years for various agronomic descriptors: juvenile growth, adult vigour, early yielding, yields, “cropping efficiency”, percentage of rotten pods and average pod weight. Various morphological, biochemical and molecular de scriptors have been used to study the diversity of the “Guiana” group. Resistance to black pod rot caused by stramenopiles of the genus Phytophthora (P. palmivora and P. capsici) was assessed in early tests and many resistant clo nes have been identified. Sensory studies have revealed a cocoa f lavour that is statistically better than that of the industrial reference (“West African Amelonado”). As this germplasm seems very promising in cacao breeding, it is therefore important to continue sur veys in French Guiana (some zones have yet to be surveyed) and maybe in the Guiana Shield, and to as sess all clones for their performance in relation to other pests and diseases.

Mots-clés Agrovoc : Theobroma cacao, plante sauvage, résistance aux maladies, résistance aux organismes nuisibles, Phytophthora palmivora, Phytophthora capsici, Phytophthora, Moniliophthora, Miridae, biogéographie, génétique des populations

Mots-clés géographiques Agrovoc : Guyane française, France

Mots-clés complémentaires : Phytophthora megakarya, Moniliophthora perniciosa

Mots-clés libres : Cocoa, Theobroma cacao, Spontaneous wild natural populations, French Guiana

Classification Agris : F70 - Taxonomie végétale et phytogéographie
H20 - Maladies des plantes
H10 - Ravageurs des plantes
F30 - Génétique et amélioration des plantes

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

Auteurs et affiliations

  • Lachenaud Philippe, CIRAD-BIOS-UPR Bioagresseurs (FRA)

Autres liens de la publication

Source : Cirad-Agritrop (https://agritrop.cirad.fr/577223/)

Voir la notice (accès réservé à Agritrop) Voir la notice (accès réservé à Agritrop)

[ Page générée et mise en cache le 2024-03-25 ]