Fruit quality and shelf life improvement of grape cv. Rish Baba using Brassinosteroid during cold storage
2019
Pakkish, Zahra | Ghorbani, Bahareh | Najafzadeh, Roghayeh
Chilling injury (CI) and decay are primary postharvest problems for horticulture crops such as grape fruits during storage. In the present study brassinosteroid (BR) was used in concentration of 0, 0.75 and 1.5 ppm on fruit quality of grape cv. Rish Baba during cold storage and then the quality parameters such as CI and decay, ion leakage, lipid peroxidation and accumulation of malon dialdehyde, hydrogen peroxide (H₂O₂) content, vitamin C, organic acids, total soluble solids, activity of antioxidant enzymes including catalase, peroxidase, ascorbate peroxidase and superoxide dismutase were measured during 5 weeks. The results showed that BR effectively reduced CI and decay of grape fruits during chilling damage and also induced the activity of antioxidant enzymes, that 1.5 ppm showed the best effects. The results indicate that the elicitation of an antioxidant response in grape fruit by BR may be associated with CI alleviation. According to the results, BR maintained the grape fruit quality and shelf life. The present study is the first evidence that BR enhance grape fruit tolerance to cold stress.
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