The aim of this work was to evaluate the effect of 1-methylcyclopropene (1-MCP) application associated with different rates of cooling and settlement of controlled stored atmosphere (CA) on quality of 'Gala' apple fruits. In the first experiment, the treatments were with or without 1-MCP and two times to reach the storage temperature (0.5°C): 7 days (slow) and 3 days (fast). The second experiment evaluated the effect of 1-MCP application and the settlement of stored CA: slow (7 days) and fast (3 days). The CA condition was 1.2kPa O2 + 2.5kPa CO2 at 0.5°C. It was applied 660nL L-1 of 1-MCP during 24h at 0.5°C in the beginning of storage on both experiments. In the first experiment fast-cooled fruit had better quality than slow-cooled fruit, independently of 1-MCP application following 6 months of storage at 0.5°C plus 7 days at 20°C. Results obtained in the second experiment showed that after 8 months of CA storage at 0.5°C plus 7 days of shelf-life at 20°C, the fast CA allowed a similar quality to 1-MCP-treatment plus slow CA-stored fruit. These results suggest that fast cooling or fast CA can substitute 1-MCP application on 'Gala' apple fruits.
Malus domestica Borkh.; 1-MCP; storage; ethylene
