ISHS Acta Horticulturae 379: International Symposium on Quality of Fruit and Vegetables: Influence of Pre- and Post- Harvest Factors and Technology
GENETIC FACTORS IN THE SUSCEPTIBILITY OF CUCUMIS SATIVUS FRUIT TO CHILLING INJURY |
| Author: | Albert C. Purvis |
| Abstract:
Chilling injury is a physiological disorder that limits the storage life of many harvested warm-season fruits and vegetables. The relationship between moisture loss during low temperature storage and chilling injury was examined using fruit from 64 PI lines of field-grown Cucumis sativus. The fruit were stored for 5 days at 5°C and 65% RH followed by storage for 4 days at 15°C and 85% RH. Weight loss was determined during storage at 5°C and 15°C and pitting and decay were rated after 2 and 4 days of storage at 15°C following the chilling treatment. A wide variation existed among the lines in the sensitivity of their fruit to low temperature. Fruit from 8 of the lines developed severe symptoms of chilling injury and fruit from 21 lines developed no injury symptoms. Chilling injury symptoms developing during 2 and 4 days of storage at 15°C were highly significantly correlated with weight loss during the 5 days of storage at 5°C. Crosses were made between some of the chilling-sensitive and chilling-resistant lines growing in the greenhouse. Chilling injury symptoms of the F1 fruit were highly significantly correlated with weight loss during the 5 days of storage at 5°C. | |
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