Abstract: This study was carried out to investigate the effect of pre-harvest spraying with 1-MCP on the postharvest mealiness development and shelf life of   Taishan Zaoxia,apple. Results showed that spraying with 1-MCP 8 days before harvest did not affect the coloring of the fruit, but significantly delayed the decrease of fruit firmness, the increase of titratable acid and soluble solid, and the release of ethylene during shelf life. This treatment effectively controlled the development of postharvest mealiness of   Taishan Zaoxia, apple, and its shelf life was extended to 10 d.

Key words: Taishan Zaoxia, apple, 1-MCP, mealiness