Cut flower buds of chrysanthemums were opened in sucrose solutions from 0 to 40%. Concentrations of 2% for ‘Albatross ’, 5% for ‘Fred Shoesmith’, 20% for ‘Streamer’ and 30% for ‘Bright Golden Anne’ were optimal under room conditions of 100 ft-c fluorescent light (24 hr); relative humidity, 40 to 70%; temp 19 to 21°C. Sucrose was better than glucose; manitol was toxic. Silver nitrate (25 ppm) and citric acid (75 ppm) resulted in best quality flowers without leaf injury; 200 ppm 8-hydroxyquinoline citrate caused leaf damage. Buds larger than 5.0 cm diam and 10 g fr wt were best for opening in sucrose solutions. Flowers opened in solution in 7-9 days and were better quality and had greater longevity than those opened on the plant in the greenhouse.
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Kofranek et al. (1972) studied this question.