GLUTAMIN AND MALIC ACID INCREASED THE VASE LIFE OF CUT ROSE FLOWERS ('AVALANCH')

Rose is one of the worlds and Iran’s most popular flower or cut flowers. The study was aimed to increase vase life of cut rose flowers. The experimental factors were malic acid (0, 1.5 and 3 mM), succinic acid (0, 1.5 and 3 mM) and glutamin (0 and 5 mM). The treatments were compared with one external control treatment (200 mg L^-1 HQS). The effects of treatments and their interaction on the total chlorophyll content, membrane stability and malondialdehyde content, vase-life, solution uptake, wet weight and flower diameter of cut flowers of rose was observed. The results indicate that experimental factors significantly affected flower parameters. Maximum flower vase life was recorded in M₃S₀G₅ (malic acid 3 mM+ succinic acid 0 mM + glutamine 5 mM) with average vase life of 15 days.