Resumo

PACHON, Yerlendy Vanessa; BALAGUERA-LOPEZ, Helber Enrique  e  FLOREZ-VELASCO, Nixon. Postharvest behavior and chilling injury in avocado (Persea americana Mill) fruit cv. Hass treated with 1-methylcyclopropene, ethylene, and intermittent warming. Rev. Fac. Nac. Agron. Medellín [online]. 2022, vol.75, n.2, pp.9895-9907.  Epub 31-Maio-2022. ISSN 0304-2847.  https://doi.org/10.15446/rfnam.v75n2.98741.

Persea americana, cv. Hass has become an important crop in Colombia due to increased exports to European markets; however, the avocado is a climacteric fruit sensitive to chilling injury, reducing its shelf-life and affecting commercialization abroad. This research aimed to evaluate the effect of 1-methylcyclopropene, ethylene, and intermittent warming on chilling injury and postharvest behavior of avocado cv. Hass. Five treatments were evaluated: Control; Intermittent warming cycles of 4 days at 2 °C + 1 day at 18 °C; Intermittent warming cycles of 7 days at 2 °C + 1 day at 18 °C; 1-methylcyclopropene, and ethylene. The fruits were stored for 29 days at 2 °C and then up to 14 days in the shelf-life period. The intermittent warming treatment 4-days cycles reduced chilling injuries. However, this treatment increased weight loss, respiration, epidermal color index, and electrolyte leakage during the storage period at 2 °C. Intermittent warming showed that Hass avocado fruit ripens faster, regardless of the application of ethylene in the shelf-life period. The results indicated that intermittent warming reduced the chilling injury, the treatment with 1-methylcyclopropene delayed ripening but it is not recommended for avocado cv. Hass when stored at 2 °C because the chilling injury is not reduced.

Palavras-chave : Chilling injury; Postharvest quality; Ripening; Shelf-life.

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