Abstract
The occurrence of postharvest diseases in peaches ( Prunus persicae ) compromises the quality and quantity of fruit harvest. The objectives of this paper were to characterize the postharvest diseases and to evaluate the physico-chemical characteristics of ‘Regis’ peaches grown in P residente Prudente-SP. Fruits were individualized and kept in a humid chamber for 24 h, and more six days at 25±2 ? C and 65±5% RH. The incidence of rots was assessed after two and seven days of storage. The fruits presented a firmness of 4.50 Kgf on average and soluble solids content of 11.86 Brix, titratable acidity of 0.56% of citric acid and ascorbic acid of 7.08 mg.100 g -1 of pulp, 24 h after harvest. The incidence of fungi rots was 16.6% two days after harvest, and 50.3% six days after harvest. Infestation by fruit flies reached 18.1% of fruits. The main p athogens detected were Colletotrichum gloeosporioides (22.0%), Fusicoccum sp. (10.4%) and Rhizopus stolonifer (6.1%). The physico-chemical characteristics evaluated did not influence the occurrence of fungi rots . The high incidence of rots is the main cause of postharvest damages in ‘Regis’ peach cultivated in Presidente Prudente-SP, evidencing the necessity of a careful phytosanitary procedure in the field and during post harvest stage aiming to produce commercial quality fruits.
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