Responses of ‘Anna’, a rapidly ripening summer apple, to 1-methylcyclopropene
Claire Pre-Aymard, Asya Weksler and Susan Lurie,
Postharvest Biology and Technology Volume 27, Issue 2 , February 2003, Pages 163-170
2003
บทคัดย่อ
The summer apple ‘Anna’ was treated with the ethylene inhibitor 1-methylcyclopropene (1-MCP) at concentrations of 0.01, 0.1 and 1 ml l-1 for times from 4 to 24 h at 20 °C immediately after harvest, and the ripening of the fruit was monitored for 12 days at 20 °C. Fruit were also treated with 1 ml l-1 at 20 °C or at 0 °C and then stored for 5 weeks at 0 °C before ripening, or treated after 1, 4, and 8 days at 20 °C and ripening monitored. Apples treated with 0.01 ml l-1 1-MCP ripened similarly to control apples. Apples treated with 0.1 and 1 ml l-1 1-MCP had lower ethylene production and respiration, slower loss of firmness and acidity, and less of a change in peel color from green to yellow. The inhibition conferred by 0.1 ml l-1 disappeared after 4 or 5 days and the apples ripened similarly to controls, while 1 ml l-1 treated apples remained less ripe throughout the ripening period. There was no benefit gained from treating the fruit for 24 h rather than 4 h. The apples responded to 1 ml l-1 at 0 or 20 °C for 24 h similarly. If treatment with 1-MCP was delayed for 4 days, or if the fruit were treated at the end of the storage period, there was little or no effect on fruit ripening. ‘Anna’ apple responded very well to 1-MCP by both delay of ripening during shelf life and maintenance of quality following storage.