“玉露”桃的采后生理及其贮运技术研究

Studies on postharvest pbysiology aud technolcgy of storage and transport of YU- Lu peach fruits.

以七八成熟的“玉露”桃果实为试材，研究其采后生理的变化及与之适应的贮运技术．试验结果表明：①“玉露”桃果实采后常温下后熟衰老进程很快，果实组织中的ＳＯＤ活性急剧下降，果实迅速软化，采后第３天出现乙烯释放高峰，随之果实即达完熟；②３℃贮藏果实，可维持较高的ＳＯＤ活性，减缓果实软化，减少乙烯释放量并推迟其峰值的出现；③经３℃预冷１－３天后的果实，置于常温下仍能正常后熟并不影响其品质，且后熟进程得以推迟，从而为“玉露”桃的短期低温集结与批量外运提供了技术依据；④采用内有隔板瓦楞纸箱加聚乙烯发泡网套果包装，与传统的竹箩包装相比较，可明显减少运输过程的振动损伤，使果实商品率增加，腐烂率减少，货架寿命延长．

ripe Yu- Lu peach fruits (Prunus persica L)were used to investigate its postharvest physiology and technology of both storage and transport. The results were as follows:①The process of fruit senescence was very fast, SOD activity in fruit decreasing markedly, fruits became soften soon and a peak of ethylene release showed up on the 3rd day at room temperature after harvest. then completely ripened.②Fruits stored at 3 ℃ led to a higher level of SOD activity and firmness,lower ethlene productlon and delay of the occurrence of peak of ethlene pro-duction,③The Yu- Lu fruits pretreated with lower temperature at 3 ℃ for l-3davs could ripened normally at room temperature. The pretreatment manifected no effect on the fruit quality,but caused a delay of ripening process, thus providing the technological foundation for short- term and bulk transportation under lower temperature conditions,④As compared with the traditional bamboo basket package at production site,the peaking of fruits wrapped notably decreased me-chanical injury during transport,increased intact fruit rate, lowered fruit decay rate,and peo-longed its shelf-life with foamed poly-ethylene net and corrugated paper box.