1-Methylcyclopropene (1-MCP) Preharvest Aqueous Spray Delays Ripening of Mango (Mangifera indica L.) cv â€˜Carabaoâ€™
Keywords:1-methylcyclopropene, â€˜Carabaoâ€™ mango, preharvest 1-MCP application, 1-MCP aqueous spray
A preharvest 1-methylcyclopropene (1-MCP) aqueous spray was applied to mango fruits to determine whether it could effectively block ethylene and subsequent ethylene ripening responses.Â 1-MCP at 0, 10, 20 and 30 ppm was sprayed to mango fruits at 90, 100 and 110 days after flower induction (DAFI). Fruits were harvested at 117 DAFI and stored at 12.5oC. Ripening parameters were measured during storage. Significant difference in firmness was observed with treatment of 10ppm 1-MCP at 100 DAFI at 14 d storage compared with the rest of the treatments and controls. Delayed peel color development was observed for all the 1-MCP treatments but a significant difference was observed with 10 ppm 1-MCP sprayed at 100 DAFI at 17 d. This treatment also had significantly lowest peel color index (PCI) at the end of the 26 d storage. Slowest decline in visual quality rating (VQR) was also observed in this treatment. No significant differences in ethylene production was observed. A preharvest aqueous spray formulation of 10 ppm 1-MCP applied at 100 DAFI was proven effective to delay the ripening of mango. This is the first study on a preharvest 1-MCP aqueous spray application on â€˜Carabaoâ€™ mango fruits.
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