不同温度冷藏对油桃生理变化的影响

Effects of Different Storage Temperatures on Physiological Changes of Nectarine

在(1±0.5)℃、(3±0.5)℃、(5±0.5)℃及常温条件下,研究了油桃的生理变化。结果表明:低温可延缓油桃果肉硬度的下降及叶绿素的分解速度,降低呼吸强度和乙烯释放量,延迟呼吸跃变时期,并抑制了果实后熟过程中PG、CX的活性。其中(1±0.5)℃的效果最为显著,(3±0.5)℃和(5±0.5)℃对果实成熟衰老进程的抑制作用相对较小,且后者还出现冷害现象。

This paper is to study the physiological changes of nectarine,which was placed under differe nt temperatures(1±0.5)℃,(3±0.5)℃,(5±0.5)℃and air.The results showed that the low temperature can delayed the fall in nectarine firmn ess and chlorophyll degradation speed,and lowered the respiration rate and ethy lene evolution,and delayed the appearing time of respiration peak,as well as inhibited activities of PG and CX.Among them(1±0.5)℃was most,(3±0 .5)℃and(5±0.5)℃had small controlled functions for the course of matu re and senescence,and the latter could cause the chilling injury.