Abstract
Alternaria alternata, Botryodiplodia theobromae and Botrytis cinerea were isolated from rotted fruits of mango cultivars Keitt, Kent, and Tommy Atkins, and proved to be highly pathogenic to all these varieties. Preliminary tests showed that dipping fruits in hot water (HW) at 50oC for 5 min or holding in hot air (HA) for 4 h at 40oC did not damage the fruit. Combination of HA for 4 h followed by HW for 5 min (HA + HW) was the most effective treatment for retarding postharvest disease without peel blackening and fruit damage. These heat treatments, especially HA + HW increased the shelf life of inoculated and uninoculated fruits. The quality characteristics of non-inoculated fruits of the three varieties including total soluble solids, titratable acidity and vitamin C contents were not significantly affected by these heat treatments.
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