Azam Ranjbar; Nourollah Ahmadi
Abstract
This research was conducted to evaluate the effects of 1-MCP and ethylene on extending the display quality and increasing vase life of cut carnation flowers in a completely randomized design with three replicationsat the laboratory of the postharvest physiology, Tarbiat Modares Universityin 2014. First, ...
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This research was conducted to evaluate the effects of 1-MCP and ethylene on extending the display quality and increasing vase life of cut carnation flowers in a completely randomized design with three replicationsat the laboratory of the postharvest physiology, Tarbiat Modares Universityin 2014. First, cut flowers were treated with 0, 0.5, 1 and 1.5 µl l-1 of 1-MCP for 24 h and then exposed to 1 µl l-1 ethylene for 16 h. The results showed that 1-MCP had significant effect on the physiological and biochemical characteristics and the activity of antioxidant enzymes. Maximum of vase life and the amount of chlorophyll and anthocyanin were revealed in samples treated with 1 µl l-1 1-MCP. Also, the highest peroxidase enzyme activity was observed in treatment of 1 µl l-1 1-MCP which had significant difference with other treatments. The highest and lowest catalase and superoxide dismutase activities were found in 1.5 µl l-1 1-MCP and control, respectively. In conclusion, 1-MCP treatment resulted in extending vase life and increasing activity of antioxidant enzymes in cut carnation cv. ‘Grand Slam’ by suppression of ethylene action.
Asghar Ramezanian; Seyyed Hossein Mirdehghan; Najmeh Roshanzamir
Abstract
In this research the effect of preharvest application of salicylic acid and methyl jasmonate on vase life and some qualitative and quantitative characteristics of cut rose flowers cvs. ‘Sweet Water’ and ‘Dolsevita’ was investigated. Salicylic acid at 0.01, 0.05 and 0.1 mM and ...
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In this research the effect of preharvest application of salicylic acid and methyl jasmonate on vase life and some qualitative and quantitative characteristics of cut rose flowers cvs. ‘Sweet Water’ and ‘Dolsevita’ was investigated. Salicylic acid at 0.01, 0.05 and 0.1 mM and methyl jasmonate at 0.1 and 0.2 mM foliar sprayed and distilled water used as control. This experiment was carried out using CRD with four replications. Harvested flowers kept at 3±1°C and 70-80% RH. Results showed that methyl jasmonate at 0.2 and salicylic acid at 0.1 mM on ‘Sweet Water’ and methyl jasmonate at 0.1 mM on ‘Dolsevita’ increased vase life with delay in senescence related processes through increase in solution uptake, increase in relative fresh weight, maintenance of plant membrane stability and stem total carbohydrate. Also, ‘Sweet Water’ with average of 40.56 days compared with ‘Dolsevita’ with average of 27.74 days increased the vase life. Overall, preharvest spray of roses with methyl jasmonate and salicylic acid as a method to increase postharvest quality and maintenance of cut roses is recommendable.