Agronomic assessment of wild cocoa trees (Theobroma cacao L.) from the Camopi and Tanpok basins (French Guiana)
A study was made of around 1600 individual cocoa trees (Theobromn cacao L.) representing 144 open-pollinated progenies and 11 wild populations identified in two river basins of French Guiana, based on the following selection criteria: juvenile growth (or vigour), adult vigour, the yield:vigour ratio, earliness of production, yield, average pod weight and losses due to rot in the field. Observations were carried out at CIRAD's Sinnamary station in French Guiana over a total of 10 years. The analysis of variance carried out on the seven most numerous populations (amounting to 97% of the individuals) revealed population and/ or progeny effects for all the criteria. It is proposed that the study material be incorporated into genetic improvement programmes, particularly for yield, the yield:vigour ratio and performance in the field with respect to rot diseases. To that end, practical indications are given to breeders for choosing from the populations and progenies.
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Bibliographic Details
| Main Authors: |
Lachenaud, Philippe,
Oliver, Gérald,
Letourmy, Philippe |
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| Format: | article
biblioteca
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| Language: | eng |
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| Subjects: | F30 - Génétique et amélioration des plantes,
F01 - Culture des plantes,
H20 - Maladies des plantes,
Theobroma cacao,
plante sauvage,
variété indigène,
critère de sélection,
amélioration des plantes,
caractéristique du peuplement,
caractère agronomique,
croissance,
vigueur,
productivité,
résistance aux maladies,
Phytophthora,
http://aims.fao.org/aos/agrovoc/c_7713,
http://aims.fao.org/aos/agrovoc/c_24126,
http://aims.fao.org/aos/agrovoc/c_32886,
http://aims.fao.org/aos/agrovoc/c_1078,
http://aims.fao.org/aos/agrovoc/c_5956,
http://aims.fao.org/aos/agrovoc/c_34910,
http://aims.fao.org/aos/agrovoc/c_210,
http://aims.fao.org/aos/agrovoc/c_3394,
http://aims.fao.org/aos/agrovoc/c_37512,
http://aims.fao.org/aos/agrovoc/c_6210,
http://aims.fao.org/aos/agrovoc/c_2328,
http://aims.fao.org/aos/agrovoc/c_5844,
http://aims.fao.org/aos/agrovoc/c_3093,
http://aims.fao.org/aos/agrovoc/c_3081, |
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| Online Access: | http://agritrop.cirad.fr/479202/
http://agritrop.cirad.fr/479202/1/ID479202.pdf
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