Postharvest ethylene treatment for uniform ripening of West Indian type avocado fruit in Florida

Donald J. Huber, Steven A. Sargent, Jonathan H. Crane


A series of experiments were performed to determine the effects of postharvest application of ethylene on ripening uniformity and fruit quality of a late-season, West Indian-type avocado ('Monroe'). Fruit from three harvest dates (early, midand late season) were treated with ethylene (100 ppm) at 13 or 20C for 12 or 24 hours, or held continuously in air at 13 C. Avocados treated with ethylene (100 ppm) at 13C for 24 hours ripened more uniformly and had lower incidence of decay than those from the other treatments. Uniform ripening was defined as fruit within a given lot with less variability in firmness at the full-ripe stage. Fruit from all treatments exhibited no significant differences in peel color, dry matter, or oil content during ripening.


persea americana; ethylene; firmness; ripening

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Proc. Fla. State Hort. Soc.     ISSN 0886-7283