Moreover, in general, total phenolic and anthocyanin concentrations were higher in fruit from treated trees than in those from control ones, either at harvest or during the whole storage period. In addition, changes in fruit colour and total soluble solid content were also delayed in fruit from melatonin treated trees with respect to controls. Results showed that these treatments reduced weight losses during storage, as well as losses in firmness and titratable acidity. In the present experiments, the effects of melatonin (0.1, 0.3, and 0.5 Mm) by foliar spray treatments of ‘Prime Giant’ and ‘Sweet Heart’ sweet cherry trees on fruit quality traits and antioxidants systems during storage was evaluated. Melatonin has been reported to have an important role in fruit ripening, although the effect of pre-harvest melatonin treatment on sweet cherry quality properties during storage is still unknown. 2Department of Applied Biology, University Miguel Hernández, Orihuela, Spain.1Department of Agro-Food Technology, University Miguel Hernández, Orihuela, Spain.Zapata 1, María Serrano 2* and Daniel Valero 1 Alberto Carrión-Antolí 1, Domingo Martínez-Romero 1, Fabián Guillén 1, Pedro J.
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