ISHS Acta Horticulturae 804: Europe-Asia Symposium on Quality Management in Postharvest Systems - Eurasia 2007
AN ALTERNATIVE TO EXTENDING POSTHARVEST QUALITY OF DENDROBIUM WATER OUMAE (4N) INFLORESCENCES USING 1-MCP FUMIGATION |
| Authors: | K. Obsuwan, A. Uthairatanakij |
| Keywords: | bud opening, displayed-life, flower dropped, 1-MCP, Dendrobium |
| Abstract:
1-Methylcyclopropene (1-MCP) gas has been reported to delay plant senescence. The effect of 1-MCP on the postharvest quality and display-life of Dendrobium Water Oumae (4N) was investigated. Sprays of Dendrobium Water Oumae (4N) were harvested with 4-5 open florets. They were placed in sealed plastic containers and fumigated with 1-MCP at 100, 200 or 400 nL.L-1 at 25°C for 1.5 h compared to unfumigated flower (control). Thereafter, they were transferred and held in a vase solution containing 2% glucose + 150 mg.L-1 8-HQS and treated with 1-MCP at 400 nL.L-1 reduced flower wilting. All concentrations of 1-MCP (100, 200, 400 nL.L-1) significantly reduced flower abscission. However, 1-MCP did not affect water uptake of orchid sprays compared to the control. Sprays treated with 1-MCP had longer display life (30 days compared to 26 days for the control). In conclusion, 1-MCP fumigation may be used as an alternative for extending the postharvest quality of orchid inflorescences before export or transport to customer. | |
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