Frost hardening
nounPronunciation: /frɔːst ˈhɑːrdənɪŋ/
A physiological process where plants acclimate to freezing temperatures through gradual cold exposure, involving increased solute accumulation, cell wall strengthening, and altered membrane composition. This cold-induced adaptation increases the temperature at which ice crystal formation causes cellular damage.
Plain English
The process where plants become tougher and more resistant to freezing damage by gradually exposing themselves to cold weather.
Etymology & History
Usage
"Spring frost hardening in grapevines reduced freeze damage to developing shoots when unseasonable cold returned."
Style guide notes: Specify whether discussing autumn hardening or spring dehardening phases when describing seasonal cycles.
Also known as
Contrasted with
Related Terms
Frequently Asked Questions
How long does frost hardening take in temperate plants?
Gradual hardening typically requires two to four weeks of progressively colder temperatures for maximum tolerance.
What happens if frost hardening is interrupted by warm weather?
Dehardening occurs, reducing frost tolerance, making plants vulnerable to unexpected freezing damage.
Why Test Candidates on This?
Essential for understanding seasonal stress physiology and agricultural frost protection strategies.
Required skill level: Mid