Assessment of Different Preservative Solutions on Vase

The postharvest vase life of cut roses was studied to determine theeffects of various physiological factors that influence the vase life of cut flower.cut roses were obtained from commercial area of siliguri. to assess the effectof preservatives on the postharvest life of rose, cut flowers were treated withfollowing preservative solutions: fixed amount of citric acid (ca) (300 ?g/ml)and 8-hydroxyquinoline (8-hq) (200 ?g/ml) with various concentrations (1%to 8%) of sucrose solution. each treatment consisted of 3 replicates. cut roseswere treated with different solutions and were kept at normal room temperature(20° c) under normal day light and natural ventilation. the biochemicalparameters such as phenol, flavonol content, total soluble sugar, reducingsugar, non-reducing sugar, and for antioxidant property 1,1-diphenyl-2-picrylhydrazyl (dpph) free radical scavenging activity was determined inflowers treated for 0, 2, 4, 6 and 8 days, respectively. the physiologicalparameters such as vase life, water uptake, transpiration rate and water balancewere also observed. the results demonstrated that the flowers which weretreated with 5% of sucrose extended the vase life of cut flower from 4 to 8 daysby improving the carbohydrate supply and reducing oxidative stress mediateddamages during rose flower senescence.