ISHS Acta Horticulturae 768: XXVII International Horticultural Congress - IHC2006: International Symposium on The Role of Postharvest Technology in the Globalisation of Horticulture
COMPARISON ON POSTHARVEST PHYSIOLOGICAL CHANGES BETWEEN MIDDLE-MATURE AND LATE-MATURE PEACHES |
| Authors: | Zhang Hai-ying, Han Tao, Li Li-ping, Wang You-nian |
| Keywords: | peaches, storage, variety, physiology |
| 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. | |
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