Abstract

Abstract: Roses are the most economically important ornamental plant and belong to the top five ornamentals worldwide. Vase life considers as the most importint quality index of cut flowers which is applied to determine the value of flowers and evaluating of new introduced varieties. Quality and vase-life of cut flowers is influenced by different factors. Fresh flower lose their quality while passing through the market fharves! packaging transportation and salel and large deal of remaining flowers are sold at low quality conditions. Current study was conducted to investigate the effect of GABA in five doses included 0, 1, 5, l_0, 15 mM on postharvest indices of rose cut flowers cv. Red Naomi included vase life, chlorophyll, relative solution uptake, relative fresh weigh! dry weigh! ion leakage of flower. GABA neither does contraindication nor harmful effect on health and can be used as a safe chemical in agricultural crops and products. Results showed that GABA treatment had a significant effect (o/ol) on Relative solution uptake, chlorophyll, relative fresh weight as well as vase life (%5J compared to the control, however, no significant effect was observed related to dry weight and ion leakage.