843 PB 485 EFFECT OF SUCROSE SOLUTIONS ON POSTHARVEST LIFE OF SATIN FLOWER (Clarkia arnoena)

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  • 1 Department of Horticulture and Landscape Architecture, University of Kentucky, Lexington KY 40546

Greenhouse grown cut stems of satin flower were used in a series of postharvest experiments to determine the effect of sucrose on flower life, flower quality and the overall vaselife. Experiments in 1993 compared 0, 0.5, 1.0 and 2.0% sucrose in tap water with and without a biocide (4 ppm sodium hypochlorite). Cut stems of `Grace Rose Pink,' `Grace Salmon and `Grace Red' were harvested, stored in a refrigerator overnight at l-2” C.; all cut stems were maintained in randomized individual vases in a room kept at 22-23 C with fluorescent lighting (50 ft.c.) from 0800-2000 HR. Postharvest performance was best in tap water, tap water + biocide, and 0.5% sucrose + biocide with excellent flower opening and flower quality for 10-14 days. Leaf yellowing and leaf necrosis increased greatly with the increasing concentrations of sucrose. Flowers of `Grace Salmon' showed significant petal necrosis in the treatments with higher concentrations of sucrose.

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