This experiment was conducted to study the effect of various preservative solutions containing SADH, sucrose, aluminum sulfate, silver nitrate, and benomyl singly or in combination, on extending longevity of cut flowers of ´Mary DeVor´ rose (Rosa hybrida L.) and ´Cherry Pink´ carnation (Dianthus caryopyllus L.) The results are summarized as follows.
1. Sucrose, aluminum sulfate, and benomyl had little or no effect on extending longevity of cut roses when used alone. However, when used in combination, sucrose 3∼5% and aluminum sulfate 300ppm were the most effective in extending cut rose vase-life.
2. The flower color of cut roses became apparently brighter by addition of sucrose in the preservative solution. Highly significant positive correlation was found between fresh weight increase and flower longevity.
3. The chemicals tested on cut carnations were mostly effective in extending vase-life, when used alone or in combination. Among the various combinations of these chemicals, sucrose 3% plus silver nitrate 50ppm was the most effective. The longevity of the treated flowers was more than doubled by the combination as compared to tap or distilled water alone.
4. Sucrose was found to be effective in reducing the flower stem collapse of cut carnations. On the other hand, SADH apparently accelerated the stem collapse.
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