ISHS Acta Horticulturae 343: Physiological Basis of Postharvest Technologies
CHARACTERIZATION OF FRUIT EXUDATE ON THE CHILLING INJURY OF CUCUMBER FRUITS |
| Authors: | R.M. Cabrera, M.E. Saltveit |
| Abstract:
The chilling sensitivity of 13 lines of cucumbers were evaluated. Cucumbers were cut transversely and exudates were collected on filter paper. Fresh and dry weight, percent solids, and electrical conductivity of exudates were determined. Results were compared to the conventional method of measuring sensitivity to chilling injury (CI), i.e., pitting, decay, respiration rate, ethylene production, and ACC oxidase activity. Fresh and dry exudates ranged from 92 to 164 and 3.4 to 11 mg, respectively. Percent solids of 1.8 to 11% were higher in more resistant lines. The highest electrical conductivity of 60 uS/cm was observed in a line with greater susceptibility to CI. The percent solids of exudates appears to correlate with pitting. | |
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