Journal of Taiwan Agricultural Research

Author:Chia-Hui Tang, Ruey-Song Lin, Tan-Cha Lee and Yung-Hsiung Cheng

Abstract:

    e vase life of “Furore” and “Ornella” gerhera cut flowers treated with preservatives and exogenous ethylene at 0~10ppm concentrations were studied. Meanwhile, the water uptake, fresh weight change, respiration rate, and ethylene production of gerbera cut flower pulsed with preservative treatment were investigated. Ethylene all concentrations of tested increased the respiration rate and ethylene production of the treated flower, but not significantly affected their vase life. Pulse treatment with ethylene inhibitors, including aminotriazole (ATA) (1.2mM), 1 -methylcyclopropene (1-MCP) (1800ppb), retain (100ppm) and silver thiosulfate (STS) (0.1~2.0 mM), had no effect on prolong of the vase life of gerhera cut flower. The results showed that the cut flowers of gerbera were not sensitive to ethylene, and their senescence was not caused injury by ethylene. The vase life of these two cultivars prolonged for 4 days after pulse treatment with 1,3-dichloro-5, 5-dimethylhydantoin (DDMH), NiCl₂ and sucrose for 2 hours. The best effect was obtained with the treatment of combination of 1.25 ppm DDMH, 250 ppm NiCl₂ and 0.25% sucrose for “Furore” and treatment of combination of 25 ppm DDMH, 500 ppm NiCl₂ and 0.5% sucrose for “Ornella”.

Key words:Cut gerbera, Ethylene, Ethylene inhibitors, Preservative, Vase life

Download: PDF Links