Relationship between the bagging microenvironment and fruit quality in ‘Guibao’ peach [Prunus persica(L.) Batsch]

SummaryThe late-ripening peach [Prunus persica (L.) Batsch] cultivar ‘Guibao’ was chosen in order to study the effect of different bagging treatments on the appearance, skin quality, and internal quality of fruit. Diurnal variations in temperature and relative humidity (RH) in white single-layer paper bags (WPB), white single-layer polypropylene non-woven bags (WPPB), and black single-layer paper bags (BPB) were recorded for 15 d before harvest. Bagging treatments were applied 30 d after full bloom (DAFB). The WPB and WPPB treatments continued until harvest, while the BPB were removed 7 d before harvest. Observations were recorded on skin colour and fruit quality attributes such as fruit fresh weight (FW), flesh firmness, total soluble solids concentration (TSSC), colour, skin pigments, soluble sugar concentrations (SSC) and organic acid concentrations. The average temperature and RH increased slightly in the bags. Compared with unbagged control fruit, the average temperature in WPB, WPPB, and BPB increas...