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Effet De L'Elimination Du Virus De La Mosaïque Chez Dioscorea Trifida Cv Inra 5-20 Sur La Production De Tubercules Au Champ

Author

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  • Zinsou, Claude

Abstract

L'espèce D. trifida est entièrement virosée et sa culture est menacée de disparition dans la zone caraïbe. Les travaux de l'équipe de Degras (Saleil et al.1990) au Centre INRA des Antilles et de la Guyane, ont permis d'obtenir à partir du cultivar INRA 5-20, un clone CT 10 indemne du virus de la mosaïque (YMV). Ce papier donne les premiers résultats d'évaluation des potentialités de production de ce clone en vue de redynamiser la culture de l'espèce. Des vitroplants plantés en 1999 ont produit des semences dites de première génération. En 2000, des cultures comparées issues de ces semences et de vitroplants ont donné un rendement moyen de plus de 2 kg par plante, équivalent à plus de 40 t pour 20 000 pieds à l'hectare. De plus, le nombre de tubercules utilisables comme semences (25-100 g) représente 2.5 à 10 fois la quantité nécessaire à la replantation. Des essais d'évaluation des rendements obtenus dans les conditions de l'agriculteur sont en cours.

Suggested Citation

  • Zinsou, Claude, 2001. "Effet De L'Elimination Du Virus De La Mosaïque Chez Dioscorea Trifida Cv Inra 5-20 Sur La Production De Tubercules Au Champ," 37th Annual Meeting, July 15-20, 2001, Port of Spain, Trinidad and Tobago 256663, Caribbean Food Crops Society.
    • Handle: RePEc:ags:cfcs01:256663
    DOI: 10.22004/ag.econ.256663
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