Effects of Different Bagging Treatments on Fruit Quality of Non-astringent Persimmon

To study the effect of bagging on fruit quality of non-astringent persimmon,nine kinds of bags were used on 'Fuyu' fruit on July 10th,the bags were taken off on Oct.7th and the fruit were harvested on Nov.7th.The results showed that removing the bags 30 days ahead of harvest was beneficial to fruit color,the fruit pericarp of treatment 5 showed typical orange color.Pericarp pigment was significantly correlated to color.Treatment 7 significantly reduced the spots rate and the incidence of brown spots of fruits.All bags decreased the content of soluble solids and reducing sugar,the effect of double-layer bags was more obvious.Single-layer bags and treatment 6 significantly increased the total soluble sugars and vitamin C contents.Bagging improved the contents of free amino acids and proteins,treatment 7 made the protein content reach 6.1 × 10-3 mg·g-1 which reached significant difference level.Treatment 6 significantly increased the levels of the mineral elements except Zn.Considering the various indicators,white single-layer composite paper bag was most suited to improve the internal and external fruit quality,followed by outer yellow and inner white double-layer bag.