ISHS Acta Horticulturae 430: VII International Symposium on Flowerbulbs
ETHYLENE AS A PROMOTER FOR FLOWER INDUCTION AND DORMANCY BREAKING IN SOME FLOWER BULBS |
| Author: | H. Imanishi |
| Keywords: | Ethylene, Smoke treatment, Flower induction, Dormancy breaking, Tazetta narcissus, Dutch iris, Tulip, Freesia |
| Abstract:
Exposing bulbs to smoke or ethylene during storage induced a higher flowering percentage and earlier flowering in tazetta narcissus and Dutch iris. This response was observed in even bulbs which would normally be too small to flower. In tulip, ethylene was effective in ensuring and advancing flowering when applied at the vegetative stage. Ethylene was also effective in breaking the dormancy of freesia corms. Ethylene was shown to be the only active component of smoke. An optimum method of ethylene application, and the physiological basis for its stimulation of flowering or dormancy breaking, are described. | |
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