关键词: 小苍兰切花, 可溶性糖, 小花开放率, 瓶插寿命

Abstract: The reason why not all ths florets of freesia (Freesia refracta) inflorescence cut at bud stage opened was lack of carbohydrate. In order to supplement carbohydrate, two methods were adopted; (1) Pretreated with sugar solution (10%, 20%, 30%), the sugar content in cut freesia in-floescence increased,therefore the floret opening rate increased and its vase life was prolonged 5 (2) Preserved in preservative solution containing sugar, STS (silver thiosulphate), 8-HQC (hydroxyquinoline citrate) and several growth regulators, the flower quality of freesia inflorescence was improved and senescence delayed. The best formula of preservative solution was. 5% sugar+300 ppm 8-HQC+50 ppm kinetin.

Key words: Cut freesia, Soluble sugar, Floret opening rate, Vase life