Effects of 1-MCP on Fruit Firmness, Respiration and Ethylene Production Induced by Exogenous Ethylene in Nectarine Fruit

Qinguang” nectarine was used to investigate the effects of 1-MCP (an inhibitor of ethylene) on fruit firmness, (respiration), ethylene production and activity of ACC oxidase induced by exogenous ethylene during fruit ripening. The results showed that 1-MCP could restrain the loss of fruit firmness, the increase of respiration rates and ethylene production rates induced by exogenous ethylene. It postponed the appearing time of respiration and ethylene production, degraded the height of ethylene peak, but increased the height of respiration peak induced by exogenous ethylene. 1-MCP didn’t inhibit the increase of the activity of ACC oxidase induced by exogenous ethylene.