| Summary: | The experiment was carried out to study the effect of different concentrations of ethanol on bougainvillea flower vase life and delay abscission. Young and fresh flowers were harvested from 4 years bougainvillea trees randomly. Flower stems (petiole) were placed individually in an open solution containing different concentrations of ethanol immediately after harvesting and were placed at 28 0C of room temperature. The treatments were water control, 2, 4, 8, 10, 20, 30, 40, 50 and 70% ethanol. Positive response was found in case of 8 and 10% ethanol after 5 days of treatment. Dry weight was higher in lower concentration of ethanol and lower in higher concentration. Flower longevity was 2 days more in 8 and 10% ethanol than water control and other concentrations of ethanol. Petal wilting and abscission occurred 2 days later than water control. Perianth abscission was later in 8 and 10% ethanol than water control. Percent petal scar (color changing) was later in water control, 2, 4, 8 and 10 than 20, 30, 40, 50 and 70% ethanol The result showed flower vase life was significantly affected by ethanol concentrations and longevity was more in 8 and 10% ethanol than water control and other concentrations.
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