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ISHS Acta Horticulturae 1131: III International Conference on Quality Management in Supply Chains of Ornamentals

Enhancement of postharvest quality and antioxidant enzymes' activity of gerbera cut flowers through methyl jasmonate fumigation

Authors:   M. Sadeghi Raviz, N. Ahmadi, N. Safaei, I. Rahmani
Keywords:   catalase, peroxidase, quality characteristics, vapor treatment, vase life
DOI:   10.17660/ActaHortic.2016.1131.3
Abstract:
In this study, the effect of methyl jasmonate (MeJA) fumigation was evaluated on postharvest characteristics and biochemical traits of cut flower 'Pink Elegance' gerbera. Cut flower stems were placed in vase solution containing 8-hydroxyquinoline sulfate (200 mg L-1) and sucrose (30 g L-1), and were exposed to 0, 0.1, 0.2 and 0.3 ÁL
L-1 MeJA and 20 ÁL L-1 ethanol. Data showed that MeJA significantly increased vase life of gerbera flowers, in comparison to control and/or ethanol-treated flowers. Membrane stability index and anthocyanin content in petals were also significantly increased by MeJA, as compared to control and ethanol treatments. The solution uptake and fresh weight in flowers pretreated with MeJA were higher than other treatments, however, no significant difference was observed among treatments. MeJA treatment caused increasing activity of catalase and peroxidase enzymes. Among all treatments, 0.2 ÁL L-1 MeJA gave the best result in extending the vase life of cut flowers and increasing anthocyanin contents, membrane stability index and activities of catalase and peroxidase.

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