不同冷藏温度对蜜脆苹果采后生理的影响

Effect of Different Cold Storage Temperatures on Postharvest Physiology of Honeycrisp Apples

研究不同冷藏温度对蜜脆苹果贮藏期生理生化及货架期品质保持的影响。设置不同冷藏温度0℃和3℃,定期测定贮藏期间的各项生理生化指标和货架期品质指标,并在贮藏末期观察统计主要生理病害的病情指数。结果表明:3℃冷藏与0℃相比,能较好的抑制蜜脆苹果冷藏期间可滴定酸含量的下降,保持果实色泽,推迟呼吸、乙烯高峰的出现,抑制冷害的发生,具有较高的超氧化物歧化酶、过氧化物酶和过氧化氢酶活性,并能延缓货架期品质的下降,表现出较好的贮藏效果。各项测定指标表明,多数苹果品种适宜贮藏的0℃对蜜脆苹果来说并不适合,3℃更适合蜜脆苹果冷藏。

The effects of different cold storage temperatures （0 ℃ and 3 ℃） on postharvest physiology and shelf quality of Honeycrisp apples were studied. Physiological and biochemical parameters and quality parameters were measured regularly during cold storage. Chilling injury index and bitter pit disease index were statistically observed at the end of storage. Compared to 0 ℃, 3 ℃ storage was more effective in inhibiting the decrease in titratable acid content, preserving fruit color, postponing the occurrence of respiration and ethylene production peaks, reducing chilling injury incidence and delaying quality deterioration, thus having good preservation efficiency. The various measured parameters show that although most apple varieties are suitable for storage at 0 ℃, 3 ℃ is the better storage temperature for Honeycrisp apples.