ISHS Acta Horticulturae 167: II Symposium on Growth Regulators in Floriculture
THE ROLE OF PLANT HORMONES IN THE POSTHARVEST LIFE OF CUT FLOWERS |
| Authors: | Danuta M. Goszczynska, R.M. Rudnicki, M.S. Reid |
| Abstract:
The present state of information as to the role of each of the five major classes of plant hormones in the development and senescence of cut flowers is reviewed. In addition, the status of the "ovary factor" and the role of growth regulators in pollination-induced senescence are discussed. Much information has been accumulated in the last five years showing the importance of ethylene in the senescence of many flowers. The control of its biosynthesis during their senescence is now well understood, and the use of silver ion to inhibit its action has radically changed the handling and possible longevity of such flowers. The role of the other growth regulators in flower senescence remains controversial, and with the exception of auxin dips to delay floret and petal abscission, their practical use is minimal. A study of the many species of flowers not sensitive to ethylene may reveal more as to the role of other regulators in flower senescence. | |
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