Abstract
The effects of pulse treatment with gibberellin A3 (GA3), silver thiosulfate complex (STS), and with or without sucrose on chlorophyll degradation and vase life of cut flowers of Narcissus tazetta var. chinensis were investigated. The 20-hr pulsing treatment with STS extended the vase life of cut flowers of N. tazetta var. chinensis. Pulse treatments with GA3 delayed degradation of chlorophyll, but extended the vase life only slightly, whereas that with sucrose was ineffective, probably because the concentration of soluble carbohydrates in the stems and floral organs other than the petals was already high. Pulse treatments with STS at 0.1mM in combination with GA3 at 0.5 or 1mM were optimum for extending the vase life and preservation of leaf chlorophyll of N. tazetta var. chinensis.
