• Horticultural Science & Technology
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• v.16 no.4
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• pp.533-536
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• 1998

In order to develop a pretreatment solution for cut rose, the effects of surfactants [Tween 20, Triton X-100, polyoxyethylene 4 lauryl ether (PLE)], germicides (aluminum sulfate, $AgNO_3$, dichloroisocyanuric acid, STS, benzalkonium chloride, 8-hydroxyquinoline sulfate), sucrose, and hormones (ABA and kinetin) on the longevity and quality of 'Red Sandra' were investigated in environment-controlled room. Although 20 and 50 ppm Tween 20, and 500 ppm PLE appeared, in appearance, to be effective in retarding blueing and wilting, respectively, they didn't show statistical differences as compared to distilled water control. Among germicides, $AgNO_3$ was the most effective in delaying petal blueing, petal withering, and reduction of fresh weight, regardless of its concentration, while, in the case of STS, only 1mM treatment was effective in delaying of petal withering. Only 5% sucrose treatment delayed petal blueing, petal withering, and bent neck, but showed no significant difference as compared to 500 ppm aluminum sulfate. Finally, single or combination treatments of ABA and cytokinin were found to rather stimulate the senescence of cut rose.