小苍兰切花不完全开放的原因探讨及防止措施

本文探明了小苍兰切花瓶插过程中小花不完全开放的原因,是由于采收时切花体内自身糖分积累不足所致。用高浓度(10％,20％,30％)蔗糖液处理,可增加切花各主、侧花序含糖量,提高开放率并延长瓶插寿命。同时还研究了几种含糖、化学药剂及激素的瓶插液对小花开放、花色和瓶插寿命的效应,以S+8-HQC+KT(蔗糖+8-羟基喹啉柠檬酸盐+激动素)效果较佳。此外,还比较了糖液处理和化学药剂保鲜两种方法的利弊和应用范围。

THE REASON FOR LOW FLORET OPENING RATE IN CUT FREESIA INFLORESCENCE AND IMPROVING METHODS

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 + 300ppm 8 - HQC +50ppm kinetin.