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Asian Journal of Biochemistry
Year: 2012  |  Volume: 7  |  Issue: 3  |  Page No.: 158 - 164

Response of Carnation (Dianthus caryophyllus L.) to Salicylic Acid and Glutamine

M. Kazemi, M. Gholami, M. Asadi, S. Aghdasi and M. Almasi    

Abstract: Short postharvest vase life is one of the most important problems on the cut flowers. The study was conducted to investigate the effect of salicylic acid at different concentrations on carnation flower longevity, Aminocyclopropanecarboxylate oxidase (ACC-oxidase, ACO) activity and SOD activity vase solution of cut flowers carnation in laboratory condition. The treatments were distilled water, salicylic acid (0,1.5, 2.5, 3.5 mM) and glutamine (0, 2 and 4 mM). Results show that salicylic acid 2.5 mM followed by glutamine 4 mM is more effective than salicylic acid 1.5, 3.5 and 4.5 mM alone in improving the vase life of cut carnation flowers. The percent of wilting was minimized as a result of using this combined treatment. However, the percent of wilting increased with the increase in concentrations of salicylic acid. 2.5 mM salicylic acid+4 mM glutamine retarded the chlorophyll as well as carbohydrate degradation during the postharvest life. The results showed that salicylic acid and glutamine in preservative mixture increased the SOD activity of cut flowers and reduced ACC-xidase activity, free proline accumulation, number of bacterial on vase solution, as compared to control.

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