Effect of methyl jasmonate on reducing chilling injury symptom and maintaining postharvest quality of okra (Hisbiscus esculentus L.)
Conference proceedings article
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Publication Details
Author list: Boonyaritthongchai P., Srilaong V., Wongs-Aree C., Techavuthiporn C.
Publisher: International Society for Horticultural Science (ISHS)
Publication year: 2013
Volume number: 1012
Start page: 1119
End page: 1124
Number of pages: 6
ISBN: 9789066057265
ISSN: 0567-7572
eISSN: 2406-6168
Languages: English-Great Britain (EN-GB)
Abstract
Effect of methyl jasmonate (MeJA) at 10-2 M concentrations on physiological and biochemical changes in okra kept at 4ฐC was investigated. We found that weight loss in okra treated with 10-2 M MeJA was lower than untreated okra (control). The 10-2 M MeJA treated okra showed slight changes of peel color in L, a, and Hue when compared with control treatment. Moreover, percentage of electrolyte leakage was also lower than untreated okra. Chilling injury (CI) score was determined by observing the chilling injury symptoms of okra to evaluate damage score. The results showed that MeJA untreated okra revealed 5% of CI symptoms at 4 days. Meanwhile, 10-2 M MeJA treated okra showed 5% of CI symptom at 6 days of storage. Activity of lipoxygenase (LOX) was determined. The LOX enzyme is involved in senescence of membrane permeability and cell death. Okra treated with MeJA had lower LOX activity and malondialdehyde contents (MDA) than okra not treated with MeJA.
Keywords
Methyl jasmonate, okra
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