The objectives of this study were to investigate the symptoms and index of chilling injury of wax-apple when wax it was subjected to low temperature. Black DiamondR wax-apple suffered chilling injury while it was stored at 1℃ for two days. Symptoms of injury were first appered as the day of storage increased. Sinking of the skin happened earlier than than the development of discoloration. The abnormal ethylene production had been found after stored at 1℃ for 3 days then back to room temperature. The ethylene peak was more apparent after storage for four days, and it was more and more increased with storage days. Therespiration rate of wax-apple stored at 1 and 15℃ was low than of at 25℃. But showed an abnormal respiration peak after stored at 1℃ for 3 days. The peak remined abnormally high after storing for 4 days at 1℃ and then back to room temperature. Theresults showed that the abnormal ethylene production and respriation are not suitable indices of chilling injury in Black DiamondR wax-apple.
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