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• Main Authors: Julius Blum, Ricardo Antonio Ayub, Marcelo Barbosa Barbosa
• Format: Article
• Language: English
• Published: Universidade Federal de Santa Catarina 2011-09-01
• Series: Biotemas
• Subjects: Reguladores vegetais; Diospyrus kaki; Manejo
• Online Access: https://periodicos.ufsc.br/index.php/biotemas/article/view/20597

Harvest time and post-harvest quality of Fuyu persimmon treated before harvest with gibberellic acid and aminoetoxyvinilglycine. The aim of this work was to evaluate the effects of gibberellic acid (GA3) and aminoetoxyvinilglycine (AVG) applied in preharvest spraying, on the retardation of the harvest and on the quality of persimmon fruits cv. Fuyu. The experiment was carried in randomized complete block design. The treatments were: control, 136 mgL-1of AVG, 272 mgL-1of AVG, 36 mgL-1of GA3, 72 mgL-1of GA3 and 136 mgL-1of AVG + 36 mgL-1 of GA3, spraying 30 days before the fi rst harvest. The fruits were harvested twice and stored at 4ºC. The chemical and physical evaluations of the fruits were carried out the date of the harvest and at intervals of 15 days followed by four days at 20 ºC. In conclusion, the application of AVG (136 mgL-1) or GA3 (72 mgL-1) maintained the fi rmness of the fruits and delayed harvest by twenty days. However, fruits harvested in the initial state of ripening were more sensitive to chilling injury and were unable to support 15 days of storage at 4ºC. The plant growth regulators were not effi cient in prolonged storage. However, ripening was delayed due to the fact that the concentration of sugars was lower in the treatments than in the control.