Abstract
The post-harvest management of anthracnose is a major challenge for the stakeholders in mango sector. This constraint is linked to lake of an effective product and prohibition of several chemical molecules in the post-harvest fruit treatment. The present study aims to evaluate the level of efficiency of hot water in the control of Colletotrichum gloeosporioides (Penz), the causal agent of mango anthracnose var. 'Amelie' under in vitro and in vivo test conditions and its effect on some physico-chemical parameters of the fruit. It is part of the research for alternative solutions to the chemical method of controlling mango anthracnose after harvest. The germination inhibitory capacity of C. gloeosporioides spores of water at 45°C and in contact with the fruit during 4 soaking times (5; 10; 15 and 20 min) was evaluated. In addition, the effect of hot water on the development of anthracnose symptoms of artificially inoculated fruits and on their quality was tested. Soaking times of 15 and 20 min effectively reduced (11.98±2.72 and 17.79±3.18%) the germination of C. gloeosporioides (Penz) spores after 18 hours of observation. Soaking the mangoes in 45°C hot water for 20 min showed low infection rates (22.00 ± 4.01%) with small lesion sizes (0.12 ± 0.03 cm). However, not all treatments influenced the physico-chemical parameters of the treated var. ‘Amelie’ mangoes. In sum, hot water at 45°C did not provide 100% protection of the fruits for a long time, but can be used in combination with other methods.
Highlights
The mango (Mangifera indica L.) is widely cultivated in several tropical and subtropical countries of the world
The present study aims to evaluate the efficacy of hot water in the control of anthracnose of mango var
The germination rates of C. gloeosporioïdes spores and the efficacy of each treatment are shown in Table 1: At the 6th hour of incubation, germination rates of 71.20 ± 2.06; 68.40 ± 1.63; 57.20 ± 1.62 and 48.80 ± 1.94% were induced by treatments T1 (05 min), T2 (10 min), T3 (15 min) and T4 (20 min) respectively
Summary
The mango (Mangifera indica L.) is widely cultivated in several tropical and subtropical countries of the world. In Côte d'Ivoire, mango production is estimated at more than 100,000 t/year [2]. It is mainly produced in the North of the country, where it plays a very important socio-economic role. It is the third source of income in this part of the country after cashew nuts and cotton. The mango sector provides an annual income of nearly 7 billion CFA francs to more than 7,000 village producers and supports more than 100,000 people in Côte d'Ivoire [3]
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