Chilling injury
nounPronunciation: /ˈtʃɪlɪŋ ˈɪndʒəri/
Non-freezing cold stress that occurs at temperatures above 0°C, causing disruption of membrane fluidity, enzyme kinetics, and metabolic processes without ice crystal formation. Symptoms include browning, necrosis, and premature senescence in chilling-sensitive species like tropical and subtropical plants.
Plain English
Exposure to cool but above-freezing temperatures damages plant cells and tissues without ice formation.
Etymology & History
Usage
"Tropical banana plants suffered chilling injury when exposed to 10°C temperatures during transport and storage."
Style guide notes: Distinguish chilling injury from freezing injury; chilling occurs above 0°C without ice formation while freezing involves crystalline ice.
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Related Terms
Frequently Asked Questions
What temperature range causes chilling injury?
Typically 0-15°C depending on species; tropical plants are damaged at higher thresholds.
How can chilling injury be prevented?
Use controlled temperature storage, pre-conditioning treatments, and cultivar selection for cold tolerance.
Why Test Candidates on This?
Chilling injury evaluation is essential for postharvest management of tropical crops and understanding cold adaptation in temperate species.
Required skill level: Mid