Effect of Pulse Treatment with Sucrose, Exogenous Benzyl Adenine and Gibberellic Acid on Vase Life of Cut Rose 'Red One'

摘要

Effects of postharvest application of two plant growth regulators viz., benzyladenine (BA) and gibberellic acid (GA_3) with sucrose in the pulse solution on the vase life of roses 'Red One' were investigated. Results show a maximum gain in fresh weight (18.01%) in the cut roses in the treatment with a 20 mg centre dot L~(-1) GA_3 + 100 g centre dot L~(-1) sucrose pulse solution. In contrast to the change in fresh weight, treatments of 10 or 20 mg centre dot L~(-1) BA and the control recorded the maximum water uptake. A pulse solution of 10 or 20 mg centre dot L~(-1) GA_3 + 100 g centre dot L~(-1) sucrose or 10 mg centre dot L~(-1) BA+ 10 mg centre dot L~(-1) GA3 + 100 g centre dot L~(-1) sucrose significantly increased vase life of cut roses thanthe control. Treatments of 100 g centre dot L~(-1) sucrose, control, 10 mg centre dot L~(-1) GA, 10 or 20 mg centre dot L~(-1) BA + 100 g centre dot L~(-1) sucrose recorded higher petal tissue electrolyte leakage and decrease in vase life. Pulsing witha solution of sucrose at lower concentrations along with GA3 (10 mg centre dot L~(-1) was promising in increasing vase life of cut roses 'Red One'.