Articles
COMPARISON ON POSTHARVEST PHYSIOLOGICAL CHANGES BETWEEN MIDDLE-MATURE AND LATE-MATURE PEACHES
Article number
768_21
Pages
179 – 187
Language
English
Abstract
Two varieties of peach (Prunus persica), Okuba and Bayuecui, mid and late season maturing, respectively, used to investigate difference of postharvest physiological changes initial (22-25°C) and low (0-2°C) temperatures.
At the initial temperature, both varieties, Okuba and Bayuecui, showed typical climateric peaks of respiration and ethylene production, which occurred after 7 or 4 d, respectively, at the initial temperature, or after 8 d at 0-2°C. There were similar trends for changes of superoxide anion production rate (O2–), H2O2 content and superoxide dismutase activity in harvested fruit of both varieties, but values in Okuba were higher than those in Bayuecui. The results might account for the increased storage life of late maturing peaches compared with early or mid-maturing varieties and support the need for further research to explore the mechanism of senescence of fruit.
At the initial temperature, both varieties, Okuba and Bayuecui, showed typical climateric peaks of respiration and ethylene production, which occurred after 7 or 4 d, respectively, at the initial temperature, or after 8 d at 0-2°C. There were similar trends for changes of superoxide anion production rate (O2–), H2O2 content and superoxide dismutase activity in harvested fruit of both varieties, but values in Okuba were higher than those in Bayuecui. The results might account for the increased storage life of late maturing peaches compared with early or mid-maturing varieties and support the need for further research to explore the mechanism of senescence of fruit.
Authors
Zhang Hai-ying, Han Tao, Li Li-ping, Wang You-nian
Keywords
peaches, storage, variety, physiology
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