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Distribution of thiabendazole-resistant Colletotrichum musae isolates from Guadeloupe banana plantations

De Lapeyre de Bellaire Luc, Dubois Cécile. 1997. Distribution of thiabendazole-resistant Colletotrichum musae isolates from Guadeloupe banana plantations. Plant Disease, 81 (12) : pp. 1378-1383.

Journal article ; Article de revue à facteur d'impact
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Autre titre : Répartition des isolats de Colletotrichum musae résistants au thiabendazole dans les plantations de bananiers en Guadeloupe

Abstract : In Guadeloupe, anthracnose of bananas, caused by #Colletotrichum musae#, is commonly controlled by postharvest thiabendazole treatments. A survey was conducted in 45 banana packing stations of Guadeloupe to determine the proportion of isolates that were resistant to thiabendazole. Isolates resistant to thiabendazole concentrations of 1 pg/ml (R1), 5 pg/ml (R5), and 50 pg/ml (R50) were detected. Most of the resistant isolates were R1 or R5, and of 1,350 isolates, the proportion of resistant isolates (R1 + R5 + R50) was 23%, ranging from 0 to 70% depending on the location. The presence of resistant isolates was correlated with the exclusive use of benomyl as foliar aerial sprays from 1972 to 1982 to control Sigatoka disease. Isolates resistant to concentrations of 1 and 5 pg/ml were as pathogenic as the susceptible isolates and were not controlled satisfactorily by postharvest thiabendazole treatments. Alternative control measures and the importance of resistance in terms of anthracnose control in Guadeloupe are discussed. (Résumé d'auteur)

Mots-clés Agrovoc : Musa, Colletotrichum, Thiabendazole, Résistance aux produits chimiques, Distribution géographique

Mots-clés géographiques Agrovoc : Guadeloupe

Classification Agris : H20 - Plant diseases

Auteurs et affiliations

  • De Lapeyre de Bellaire Luc, CIRAD-FLHOR-BEP (GLP)
  • Dubois Cécile, CIRAD-FLHOR-BIOMETRIE ET INFORMATIQUE (FRA) ORCID: 0000-0002-9167-4080

Autres liens de la publication

Source : Cirad - Agritrop (https://agritrop.cirad.fr/389965/)

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