) Dianthus caryoph ylius L.( بررسي اثر محلول هاي نگهدارنده گل روي دوام و چند ويژگي كيفي گل بريدني ميخك

EFFECT OF FLORAL PRESERVATIVE SOLUTIONS ON THE VASE LIFE AND SOME QUALITATIVE CHARACTERISTICS OF CARNATION (DIANTHUS CARYOPHYLLUSL.)C\]T FLOWERS

An investigation was carried out to find the effect of sucrose and floral preservative solutions on the vase life and post harvest quality in cut carnation. Five sucrose concentrations (0, 1, 2, 3 and 5%) with three chemicals [AgNO3, citric acid (CA), 8-Hydroxy quinoline citrate (8-HQC)] were imposed on 240 cut carnations. The experiment was arranged in a factorial experimental design based on a completely randomized design (CRD). The location of study was Khalat-Paushan Experimental Station of Tabriz Agricultural Faculty. Cut carnations were kept in the storage room where the temperature and humidity were 5±1C and 70-80%. respectively. The solutions were replaced every 10 d and 2 cm of the stem ends were recut. The results showed that all treatments increased the vase life of cut carnations. In both experiments, 3% and 5% sucrose had the highest effects on the studied characteristics such as vase life, flower diameter and flower standards. Maximum vase life (40.67d) of cut carnation obtaind with (5% sucrose + 25 mg 1-1 AgNO3 and 50 rng 1 -1 CA) treatments and minimum (28d) with 50 mg 1-1 CA. The vase life of controls was 18.33 d while the addition of CA increased this time by 30-40%. It can be concluded that the addition of CA to the solution causes the reduction of pH and microbial activities consequently increasing the vase life of cut carnations.