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Journal of Applied Horticulture. 2005: 7(1): 3-7

Ethylene and anti-ethylene treatment effects on cut 'First Red' rose

Esmaeil Chamani; Ahmad Khalighi; Joyce, D C; Irving, D E; Zamani, Z A; Younes Mostofi; Mohsen Kafi

Centre for Native Floriculture, School of Agronomy and Horticulture, The University of Queensland, Gatton Queensland 4343, Australia.

A laboratory experiment was conducted to determine the effects of ethylene and anti-ethylene treatments on the postharvest life of cut rose cv. First Red flowers. The treatments comprised: exogenous ethylene applied at 1, 10 and 100 micro l/litre for 48 h at 22 degrees C. Ethylene at different concentrations reduced postharvest life, with 100 micro l/litre having the greatest effect. Ethylene production measurements suggested that First Red is climacteric during senescence. Pre-treatment of First Red flowers with 0.5 mM silver thiosulfate (STS) for 2 h at 22 degrees C increased vase life, but pre-treatment with 1 micro l/litre 1-methylcyclopropene (1-MCP) did not. Pre-treatment of First Red with 0.5 mM STS and, to a lesser extent, 1 micro l/litre 1-MCP for 2 h at 22 degrees C, protected flowers from subsequent exposure to 10 micro l/litre ethylene. Maximum vase life in both ethylene-treated and non-ethylene-treated First Red flowers was obtained with 0.5 mM STS.


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