Drought stress tolerance
noun phrasePronunciation: /ˈdraʊt ˈstrɛs ˈtɒlərəns/
The physiological and biochemical capacity of plants to maintain vital functions and survive prolonged periods of water deficit. This involves coordinated responses including stomatal regulation, osmotic adjustment, and root system modifications.
Plain English
A plant's ability to survive and function when water is scarce.
Etymology & History
Usage
"Drought stress tolerance in crop varieties can be enhanced through selective breeding programs."
Style guide notes: Use 'drought stress tolerance' for physiological capability; 'drought tolerance' acceptable in informal contexts.
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Frequently Asked Questions
How do plants develop drought stress tolerance mechanisms?
Through genetic regulation, osmotic adjustment, reduced transpiration, and deep root development over evolutionary timescales.
Which crops exhibit high drought stress tolerance?
Sorghum, millet, chickpea, and some wheat varieties show superior drought tolerance compared to maize.
Why Test Candidates on This?
Critical for crop improvement evaluations and climate adaptation studies in abiotic stress research.
Required skill level: Mid