Effect of Low Temperature on Vase Life of Carnation Cut Flowers

[Objective] The aim was to explore the methods and conditions for prolonging the vase life of carnation cut flower.[Method] The effect of low temperature(0±1) ℃ for 5 d and 10 d and(4±1) ℃ for 5 days in refrigerator) on the harvested physiological metabolism and the vase life of carnation flower cut Maste was studied and the scape,fresh weight and soluble protein content in carnation and its respiratory intensity in different temperature during the vase period were measured.[Result] The low temperature treatment group stored at 0 ℃ for 5 days got the best vase effect,which could effectively control the physiological metabolism of carnation,delay the emergence of peak value of fresh weight and soluble protein in cut flower and make the vase life of carnation be prolonged for(4.7±0.3) d.The treatment group stored at 4 ℃ could shorten the vase life of cut flower by(2.3±0.3) d compared with control one.According to the linear regression equation of sensory grading/ time under different storage temperature,the sensory scores under different vase time could be obtained.[Conclusion] The optimal storage temperature for carnation cut flower in compact bud period was 0 ℃ and the best storage time was 5 d.