ISHS Acta Horticulturae 394: Plant Bioregulators in Horticulture
1-METHYLCYCLOPROPENE, A NOVEL GASEOUS INHIBITOR OF ETHYLENE ACTION, IMPROVES THE LIFE OF FRUITS, CUT FLOWERS AND POTTED PLANTS |
| Authors: | M. Serek, E.C. Sisler, M.S. Reid |
| Keywords: | Abscission, Bananas, Begonia, Binding constants, Carnation, Ethylene binding, Flower senescence, Kalanchoe, 1-MCP, Penstemon, Ripening, Rose, STS, Tomato |
| Abstract:
A gaseous compound, 1-methylcyclopropene (1-MCP) inhibited a range of plant responses to ethylene, including ethylene-induced ripening of tomatoes and bananas, senescence of carnation flowers, abscission of florets from cut penstemon flowers, and abscission of flowers from begonia plants. The effectiveness of the inhibition is demonstrated by the very low dissociation constants (Kd=2–8 nl.l-1) for the MCP-binding site complex. Treatment of plants with as little as 5 nl MCP per liter of air for six hours inhibited subsequent ethylene action to the same extent as an optimal treatment with STS (the anionic silver thiosulfate complex), the only commercial treatment presently available. In the absence of ethylene, treated ornamental plant materials performed similarly to those treated with STS, and significantly better than untreated controls. | |
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