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香梨(Pyrus bretschneideri Rehd.cv.Xiang-li)系新疆著名特产,肉细多汁、品质优良,具有浓郁的芳香。但香梨在贮运中腐烂较严重,直接影响市场供应和出口质量。廖明康等研究香梨气调贮藏获得良好效果。张维一等研究表明,香梨果实在气调贮藏条件下,因湿度太高可能导致果心和果肉迅速累积乙醇和乙酸乙酯,引起果点扩大或形成花斑。近年来在水果贮藏中采用钙处理引起人们的注意。有研究表明,钙能抑制果实呼吸,减少乙烯产生。Sams等认为,钙处理金冠苹果,果实乙烯释放量随着钙浓度的增加而逐渐下降,但对呼吸强度无明显影响。果实采后用钙处理能明显减轻内部溃烂、苦痘病和果肉变软等。本试验就香梨采后用钙处理对果实呼吸变化、乙烯释放、挥发性物质产生以及品质和生理病害等的影响进行了研究。 材 料 与 方 法 供试香梨果实采自新疆沙依东园艺场,成熟度一致,大小均匀,平均横径5.3cm、单果重108g。采后3天随机将果实分为4组,每组204个果实,3次重复,分别放入0％(对照)、4％、8％和16％(W/V)的CaCl_2溶液中(加压板使其全部浸没在溶液中),置于真空干燥箱(型号668)内减压至250mm汞柱 5分钟,然后解除减压,
Pear (Pyrus bretschneideri Rehd.cv.Xiang-li) Xinjiang famous specialty products, juicy meat, good quality, rich aroma. However, pear rot in storage and transportation is more serious, which directly affects the market supply and export quality. Liao Mingkang and other research Pear tone storage achieved good results. Zhang Wei and other studies have shown that fragrant pear fruits in the atmosphere under the conditions of storage, due to humidity may cause fruit heart and pulp quickly accumulate ethanol and ethyl acetate, causing the fruit to expand or form a flower spot. In recent years, the use of calcium in fruit storage has drawn people’s attention. Studies have shown that calcium can inhibit fruit respiration, reduce ethylene production. Sams et al. Showed that the ethylene release of fruit decreased gradually with the increase of calcium concentration, but had no obvious effect on the respiration rate. Postharvest calcium treatment can significantly reduce the internal ulcers, bitter pit disease and pulp softening. In this experiment, the effects of postharvest calcium treatment on the respiration, ethylene release, volatile matter generation, quality and physiological diseases were studied. Materials and methods for testing fragrant pear fruit collected from Xinjiang Shayidong horticultural field, the same maturity, uniform size, the average diameter of 5.3cm, single fruit weight 108g. The fruits were randomly divided into 4 groups (204 fruits per group, 3 replications) 3 days after harvest, and then were put into CaCl 2 solution of 0% (control), 4%, 8% and 16% Platen all immersed in the solution), placed in a vacuum oven (Model 668) decompression to 250mmHg for 5 minutes, then lifted decompression,