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  • Author or Editor: John D. Faragher x
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Abstract

The effects of inhibitors of ethylene synthesis and action on the vase life and quality of fresh and cold-stored ‘Gabriella’ roses (Rosa hybrida L. cv. Gabriella) were investigated. Aminooxyacetic acid (AOA) as a 1-hr pulse at 3 or 10 mM had no effect on the longevity of fresh flowers. However, the 10 mM pulse, applied either before or after cold-storage, extended by up to 2.7 days the longevity of roses that had been stored for 3 weeks at 1C. Silver thiosulfate (STS), as a 0.5-hr pulse at 0.5 mM, extended the life of fresh and cold-stored roses by 2 and 3 days, respectively.

Open Access

Postharvest longevity of some cut flowers is shortened by exposure to ethylene gas. Adverse effects of ethylene may be prevented by treatment with 1-methylcyclopropene (1-MCP) gas. Responses of 14 different native Australian cut flowers to 1-MCP and ethylene applied at concentrations of 10 nL·L-1 and 10 μL·L-1, respectively, were examined. Each gas was applied alone for 12 hours at 20 °C and they were also applied in series. Vase lives of Ceratopetalum gummiferum, Chamelaucium uncinatum, Grevillea `Kay Williams' and `Misty Pink', Leptospermum petersonii, Telopea `Shady Lady', and Verticordia nitens were reduced by ethylene treatment. Treatment with 1-MCP generally protected these cut flowers against subsequent exposure to ethylene. The 1-MCP treatment usually did not extend their vase lives in the absence of exogenous ethylene.

Free access