Effect of Millipore Filtration, Citric Acid, and Sucrose on Peduncle Water Potential of Cut Rose Flower1

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Abstract
Millipore filtration of water was shown to accelerate the rate of hydration of rose peduncle tissue. In a stress test, aeration of deionized water decreased the rate of peduncle hydration, while millipore filtration of aerated water increased hydration rates. Solution acidification enhanced the rate of hydration, and the addition of sucrose to the solution significantly retarded hydration. Flower stems recut under deionized water hydrated as quickly as those recut in air and placed in millipore-acidified water. Flower stems recut in air and placed in deionized water hydrated slowly. These results suggest that air blockage in the cut rose stem reduces the rate of water uptake.

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