Effects of the physiological ages bananas on their susceptibility to wound anthracnose due to Colletotrichum musae

Chillet Marc, Hubert Olivier, Rives Marie José, De Lapeyre de Bellaire Luc. 2006. Effects of the physiological ages bananas on their susceptibility to wound anthracnose due to Colletotrichum musae. Plant Disease, 90 (9) : 1181-1185.

Résumé : Wound anthracnose, caused by Colletotrichum musae, and early ripening are the main problems affecting the quality of export bananas (Musa AAA Cavendish) from the Caribbean. These problems generally concern bananas grown in lowland plantations during the rainy season. Three experiments were carried out to study the influence of the physiological age of bananas, calculated on the basis of mean daily temperature sums, on their susceptibility to anthracnose. Stressful growing conditions, especially soil flooding, slowed fruit growth but had no direct effect on fruit susceptibility to C. musae or on the green life. However, fruit that had accumulated lower temperature sums were less susceptible to wound anthracnose. By varying the source-sink ratio, we show that bananas of the same grade but different physiological ages had markedly different susceptibility to C. musae. Bananas with the same temperature sum accumulation but grown in different soil-climate conditions had different levels of susceptibility. Fruit grown in cooler, highland areas were less susceptible to C. musae than fruit of the same physiological age from lowland plantations. Our results suggest that temperature sum accumulation rate is a critical factor affecting the susceptibility of bananas to the pathogen.

Mots-clés Agrovoc : banane, physiologie après récolte, anthracnose, Colletotrichum, maladie fongique, résistance aux maladies, maladie postrécolte, âge, maturation, Musa, physiologie végétale

Mots-clés géographiques Agrovoc : Caraïbes

Mots-clés complémentaires : Colletotrichum musae

Classification Agris : Q02 - Traitement et conservation des produits alimentaires
H20 - Maladies des plantes

Champ stratégique Cirad : Axe 1 (2005-2013) - Intensification écologique

Auteurs et affiliations

• Chillet Marc, CIRAD-FLHOR-UPR Qualité des aliments (GLP)
• Hubert Olivier, CIRAD-FLHOR-UPR Qualité des aliments (GLP)
• Rives Marie José
• De Lapeyre de Bellaire Luc, CIRAD-FLHOR-UPR Systèmes bananes et ananas (CMR) ORCID: 0000-0003-1243-0887

Source : Cirad - Agritrop (https://agritrop.cirad.fr/533739/)

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