Effect of Hana leaf extract and sodium nitroproside on some physiological ‎characterestics and vase life of chrysanthemum cut flower ‎ ‎(Chrysanthemum morifolium)‎

In order to investigate the effect of Hana extract and sodium nitroprusside on antioxidant properties and vase life of chrysanthemum, an experiment as factorial in a completely randomized design with three replications was conducted. The first factor was Hana leaf extract at three levels (0, 100 and 200 ppm), the second factor was sodium nitroprusside at three levels (0, 0.5 and 1 mM) and the third factor was sampling time at three levels (1, 6 and 12 day). The results showed that with increasing sampling time, flower diameter, chlorophyll content, relative water content and relative fresh weight decreased and the activity of antioxidant enzymes increased significantly. The extract of hana and sodium nitroprusside at high concentrations reduced the activity of antioxidant enzymes and improved chrysanthemum quality parameters, indicating their positive effects on the elimination of free radicals. The Hana extract treatment on sixth day of sampling time was the best treatment for improving the parameters of chrysanthemum flower. The Hana leaf extract and sodium nitroprusside treatments suppressed reduction of chlorophyll a, chlorophyll b and total chlorophyll leaf content. The results of this study showed that hana extract and sodium nitroprusside had positive effect on vase life of chrysanthemum cut flower.