ศูนย์นวัตกรรมเทคโนโลยีหลังการเก็บเกี่ยว

Chlorophyll fluorescence measurements for the determination of postharvest chilling injury.

Magnussen, A.; Weichmann, J.;

Deutsche Gesellschaft fur Qualitatsforschung (Pflanzliche Nahrungsmittel) DGQ e.V. XXXIV. Vortragstagung, Zerstorungsfreie Qualitatsanalyse, Freising-Weihenstephan, Germany, 22-23 Marz 1999. Year: 1999 Pages: 149-158 Ref: 20 ref.

1999

บทคัดย่อ

The photosynthetic capacity of pickling cucumber fruit was determined non-destructively by measuring the chlorophyll fluorescence. The optimal quantum yield of photosystem II (Fv/Fm), as an indicator of the physiological status of the plant and plant organs respectively, provides information about the quality of pickling cucumber fruit. The fruit were stressed during storage for 7 days at different temperatures (0.5, 6.5 and 13 deg C). Before and after storage, the optimal quantum yield was determined and compared to fruit damage. By use of fluorescence measurement, the stress intensity of pickling cucumbers could be quantified. Quality reduction by chilling injury or stage of senescence could be determined by fluorescence signals. The Fv/Fm ratio was highly correlated with fruit damage. The higher the Fv/Fm ratio, the better the fruit quality.