effect of different chemical treatments on the vase life of cut gladiolus flowers (gladiolus grandiflorum l.) cv. 'rose supreme'

gladiolus is one of the flowers that used on cut flower and garden plants. an experiment was conducted to study the effects of chemical treatments on the vase life of gladiolus cut flower cv. ‘rose supreme’ with ten chemical treatment using complete randomize design with 3 replications. gladiolus cut flower was harvested when the 2-3 lowest bud had start showing color then cut flower were treated by different preservative solution as: sucrose (4%), 8-hydroxy quinoline citrate (100, 200, 300 mg l-1), citric acid (150 mg l-1), gibberellic acid (50, 100, 150 mg l-1), aluminum sulfate (100, 200, 300 mg l-1) and distilled water (control) for 24 h then transferred in distilled water and kept in the temperature of 22 ºc. effect of applied treatment was evaluated by different characteristic like vase life, water uptake, chlorophyll content, floret diameter, total soluble solid of petal, floret opening, and fresh weight of flower. results showed that treatment of sucrose + citric acid + 8-hydroxy quinoline citrate extend the vase life (2.79 day than control), water uptake, flower diameter, total soluble solid of petal, floret opening, fresh weight and and treatment of sucrose + citric acid + gibberellic acid maintain chlorophyll content of leaf and improve vase life of gladiolus.