Abstract
Potted Marsh grapefruit [Citrus paradisi (Mad.)] trees with mature fruit were subjected to successive 7-day exposures to 20, 15, 10, and 5C, followed by 7 days at 25C in controlled-environment walk-in rooms. Circular depressions (pits), characteristic visible symptoms of chilling injury, developed in the peel of the fruit. To the best of our knowledge, this is the first report of inducible chilling injury of grapefruit on trees under artificial environments. The ability to induce chilling injury in the peel of grapefruit on trees enhances opportunities to study the mechanism of resistance to chilling injury that can be developed by various preharvest strategies.
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