Efeito do 1-metilciclopropeno em ameixa e nectarina

Plums and nectarines shows reduced postharvest shelf life, partially, due to their respiratory rate and fast ripening. These processes are related to ethylene production, as well as its action. Plums cv. Reubennel and nectarines cv. Rosalina, were picked at two different ripening stages (mature green and ripe). Nectarines cv. Josefina were picked only ripe ripening stage. Fruits were treated with 1-methylciclpropene (1-MCP), the at concentrations of 0, 100, 300 and 900 nL L -1 for 12 hours at 25oC. After treatment, the fruits were stored at room temperature (25oC) for eight days. There were no effects of 1-MCP on ripening and shelf life of the fruits. It is possible that for in the tested varieties of plum and nectarine the absence of effect of the 1-MCP is related to the level of receivers in the pulp or to the presence of different types of ethylene receivers.