Abstract

Abstract Nitric oxide (NO*) have been shown to extend the postharvest life of a range of flowers. In the present work, we have evaluated the effect of sodium nitroprusside (SNP), as nitric oxide donor on vase life, flower diameter, relative water content and electro leakage (EL) during postharvest of cut ros flowers. Flowers were treated for 24-h at 0, 20, 40, 60 μmol L-1 SNP and then hold in the solution include 8- HQS at 300ppm combination with 1% sucrose. Results showed that treatment cut flower with 40 μM L-1 SNP increased water relative content, flower diameter and vase life. Also the results showed that the concentration of 40 μmole L-1 SNP the greatest effect on the reduce of electro leakage. Keyword: nitric oxide, Postharvest, Rose, vase life.