Control and mechanism of superficial scald on ‘Huaniu'apples with 1- methylcyclopropene treatment

The effect of 1- methylcyclopropene( 1- MCP) on superficial scald and postharvest physiology of‘Huaniu'apples were investigated,with 1-MCP treatment in the cold storage( 0 ± 0.5) ℃ and Shelf 10 days after the cold strorage for 8 months( 25℃). The results showed that: 1- MCP treatment could effectively decrease the respiration rate and the ethylene production,delaye the peak of ethylene,decrease the content of the a- farnesene and conjugated trienes,inhibite the conversion of a- farnesene to conjugated trienes; while 1- MCP treatment could also effectively improve the content of endogenous antioxidants and total phenol,inhibite the activity of polyphenoloxidase( PPO),so that 1- MCP controlled the incidence of superficial scald rate and reduced disease in‘Huaniu'apples.