Effects of pre-harvest AVG (aminoethoxyvinglycine) applications on fruit quality and cold storage time of 'fuyu' persimmon variety

In this thesis study, the effects of AVG (Aminoethoxyvinglicine) applications at different doses (75, 150 and 225 mg l-1) before harvest on the fruits of the 'Fuyu' variety collected from the persimmon orchard in Süleymanpaşa, Tekirdağ on fruit quality during storage were investigated. Fruits treated with AVG were packaged with modified atmosphere bags and stored at 0-1 oC temperature and 85-90% relative humidity for 4 months. In the research, weight loss, soluble solids content, titratable acidty, fruit firmness, ascorbic acid content, tannin content, total phenolic content, total antioxidant content, respiration rate, decay rate, external appearance and chilling injury rates were examined. In the study, while fruit firmness decreased during storage, it was determined that the weight loss of the fruits increased. In parallel with the delaying effect of AVG applications on fruit ripening, the occurrence of chilling injury was also delayed. The decay rate increased in the 4th month analysis. The inhibitory effect of AVG on respiratory rate and loss of biochemical compounds became evident with increasing doses. As a result, 150 and 225 mg l-1 AVG application applied before commercial harvest had a significant and positive effect on 'Fuyu' variety persimmon in terms of fruit quality during postharvest storage period. Keywords: Persimmon, Aminoethoxyvinglicine, Modified Atmosphere Bags, Quality, Storage, Biochemical Compounds