Heat stress tolerance
noun phrasePronunciation: /hiːt ˈstrɛs ˈtɒlərəns/
The physiological capacity of plants to survive and maintain metabolic function under elevated temperature conditions that exceed optimal growth ranges. This involves activation of heat shock proteins and membrane stabilization mechanisms.
Plain English
A plant's ability to survive and function normally when exposed to excessively high temperatures.
Etymology & History
Usage
"Heat stress tolerance in wheat varieties has become increasingly important for breeding programs addressing climate change impacts."
Style guide notes: Use 'heat stress tolerance' rather than 'heat hardiness' in formal scientific contexts.
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Frequently Asked Questions
How do plants develop heat stress tolerance?
Plants develop heat tolerance through activation of heat shock proteins, membrane lipid restructuring, and enhanced antioxidant defense systems.
Which crops show greatest heat stress tolerance?
Sorghum, millet, and certain wheat cultivars demonstrate superior heat stress tolerance compared to maize and sensitive crops.
Why Test Candidates on This?
Heat stress tolerance is critical for evaluating crop performance under climate change scenarios and breeding program selection.
Required skill level: Mid