Chlorophyll fluorescene and chilling injury of green pepper as affected by storage conditions
R. Kosson
ISHS Acta Horticulturae 628:379-385
2003
บทคัดย่อ
The effect of storage of green pepper (Capsicum annuum ) at 1 °C , 4 °C and 8 °C for 18 days on chlorophyll fluorescence parameters and chilling injury occurrence on fruit was investigated. ‘Roxy F1’ green pepper fruit were grown in non-heated plastic tunnel in soil and harvested at mature-green stage. After harvest fruit were stored in perforated PE bags, non-perforated PE bags or without bags. At 3-6 days intervals, the chlorophyll fluorescence parameters (Fo, Fm, Fv, Fv/Fm) were measured and chilling injury symptoms were evaluated at storage temperature and after additional 3 days of shelf life at room temperature. The results showed a gradual decrease of Fv/Fm fluorescence from about 0.85 for fresh-harvested pepper to 0.55 after 3 days of storage at 1 °C and to 0.45 after 18 days of storage for both packaged and non-packaged fruit. There were no significant differences in rate of Fv/Fm decrease between pepper stored for 6 days in non-perforated bags, perforated bags and without packaging. The earliest visible symptoms of chilling injury on non-packaged pepper were observed after 6 days storage at 1 °C or after 3 days storage at 1 °C and additional 3 days at room temperature. Packaging of pepper significantly delayed chilling injury occurrence, up to 6th of day storage at 1 °C and additional 3 days at room temperature or up to 18th day of storage at 4 °C.