ISHS Acta Horticulturae 329: VII International Symposium on Plant Growth Regulators in Fruit Production
POLYAMINES AND OTHER UNCONVENTIONAL PLANT GROWTH REGULATORS; FUTURE PROSPECTS. |
| Author: | Arthur W. Galston |
| Abstract:
Over the last several decades, considerable evidence has been accumulated linking polyamines (PAs) in plants to various physiological processes, including senescence, biological and physical stress avoidance, cell division, embryogenesis and flower initiation. Although there remains considerable uncertainty concerning the natural regulatory role played by polyamines, there is no doubt at all that the application of exogenous PAs can influence each of the above processes under particular conditions. Thus, whether or not endogenous PAs turn out to be important as hormones, they could have a place in horticultural practice as growth regulators. This paper will review the effects of exogenous polyamines on plant growth, development and general performance, and will cast a glance toward future use of these materials in horticulture. Insufficient horticultural attention has been given to other types of potential plant growth regulators such as jasmonic acid and variously substituted phenols, phenolic acids and flavonoids, as well as alkaloids and a few compounds unrelated to the larger naturally occuring groups. These compounds will be surveyed as well, with a view to analyzing their possible future use in horticultural practice. | |
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