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Peach is highly perishable and need cold storage to have their preservation period extended. Rootstocks may affect both phenology and the development of plant, interfering with the potential of fruit preservation. Therefore, this study aimed at evaluating physicochemical characteristics and phytochemical contents of grafted Maciel var. peaches, on eight rootstocks in an orchard and in cold storage and commercialization simulation conditions. The measurements were carried out after 7, 14 and 21 days of cold storage at 1±0.5oC, followed by a 3-day commercialization simulation period at 22±1oC. The experimental design was a completely randomized design in factorial scheme 8x3 (8 rootstocks and 3 storage periods) with 4 repetitions of 20 fruits. Peaches were analyzed for pulp browning, total phenol content and antioxidant activity, mass loss, rot, firmness, ripening index, color, total soluble solids and titratable acidity. Lower total phenol content and lighter browning were observed in fruits harvested from trees grafted on both ‘Seleção Viamão’ and ‘Umezeiro’ rootstocks. Regardless of their rootstocks, peaches fruits retain their quality up to 14+3 days. After that, there was high mass loss, occurrence of rot, browning and softening. However, rootstocks interfered in the variables of peach quality throughout the cold storage period followed by commercialization simulation.

australian journal of crop science

Physicochemical characteristics and phytochemical contents of peach trees (Prunus persica (L.) Batsch) grafted on different rootstocks during cold storage