Effects of Different Cultivation Methods and Post-harvest Treatments on the Quality of Stored Fruits of Chuncheng 1 Sweet Orange
[Objective]This paper investigated the effects of different cultivation methods and postharvest treatments on the quality of Chuncheng 1 sweet orange fruits under storage in order to provide a reference for the postharvest treatment and storage of citus fruits.[Method]The fruit qual-ity of Chuncheng 1 sweet orange was tested using the postharvested fruits without water rinse before storage but they came from both open field cultivation and facility cultivation,respectively.At the same time,the fruits of Chuncheng 1 sweet orange cultivated in facilities were treated with three ways,that is,no rinse,water rinse,and dipping in 250 mg/L imazamethapyr 25%aqueous emulsion for 1 min before storage,respectively,and the storage effects in different treatments were observed.[Result]The results showed that the facility cultivated fruits had better storage endurance,which re-sulted in lower decay and weight loss rates compared with the fruits from open field cultivation dur-ing the storage experiment duration.After 4 months of storage,the best storage effect was observed in the facility cultivated fruits treated with 250 mg/L miconazole 25%aqueous emulsion,which showed the lowest decay and weight loss rates among all the three traetments,and the decay rate,weight loss rate,soluble solids content,titratable acid content,and vitamin C content were 5.55%,20.86%,10.68%,0.59%,and 280.6 mg/kg,respectively,in this treatment.The water rinse treatment gave the worst results,failing to reduce the decay rate but showing a significant rise in weight loss.[Conclusion]In general,facility cultivation production was more conducive to the storage of Chuncheng 1 sweet orange fruits;water rinsing treatment was not beneficial to the fruit postharvest storage of the facility cultivated fruits;appropriate use of preservative treatment within the range of safety standards could reduce the postharvest decay loss,improve the storage endurance of orange fruits,and obtain a longer satisfactory shelf life.
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