ISHS Acta Horticulturae 906: International Conference on Postharvest and Quality Management of Horticultural Products of Interest for Tropical Regions
INDUCTION OF ETHYLENE INSENSITIVITY INTO ONCIDIUM AND ODONTOGLOSSUM ORCHID SPECIES FOR IMPROVEMENT OF DISPLAY LIFE |
| Authors: | B. Raffeiner, M. Serek, T. Winkelmann |
| Keywords: | 1-methylcyclopropene, display life, flower senescence, postharvest quality |
| DOI: | 10.17660/ActaHortic.2011.906.32 |
| Abstract:
Two orchid species, Oncidium and Odontoglossum, are sensitive to ethylene. Exposure of cut inflorescences or potted flowering plants to 1 µl L-1 of ethylene accelerated bud drop, wilting of florets, and yellowing of leaves and pedicels. To prevent ethylene effects two strategies have been used in our studies: 1) treatment with the ethylene receptor blocker 1-methylcyclopropene (1-MCP), 2) Agrobacterium mediated transformation with an etr1-1 mutant gene from Arabidopsis thaliana. Selected cultivars of Oncidium and Odontoglossum orchids were pre-treated with 200 nl L-1 1-MCP at 20°C for 6 h and subsequently exposed to 0 or 1 µl L-1 ethylene. 1-MCP clearly improved postharvest characteristics of both investigated species as well in presence as in the absence of ethylene. | |
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