Abstract

Nitric oxide (NO) and thidiazuron (TDZ) have been shown to extend the postharvest life of a range of flowers possibly by downregulating ethylene production. In this study, we have evaluated the effect of sodium nitroprusside (SNP), a nitric oxide donor and thidiazuron on postharvest senescence of cut Rosa life. Flowers were treated for 24 h with 0, 20, 40 μmol.L held in the solution, 8-HQS at 300 ppm combination with 1% sucrose. Treatment with NO and TDZ delayed the ethylene production and prolonged shelf life. It was observed that, treating with NO and TDZ at a 40 μMol.L and senescence of floweres. SNP at 60 μMol.L could decrease ethylene output, by inhibiting ACC synthase activity and reducing ACC content. Key words:   flower. Therefore, we examined the effects of SNP and TDZ on its ethylene production and shelf-1 TDZ and 0, 20, 40, 60 μmol L-1 SNP and then-1concentration and 40 μM.L-1 TDZ with 40 μM.L-1 SNP decreased ethylene production-1 harmed the flowers. It was suggested that NO and TDZ Rose, nitric oxide, thidiazuron, ethylene biosynthesis, postharvest.