Drought tolerance
nounPronunciation: /draʊt ˈtɒlərəns/
The ability of plants to maintain physiological function and survive extended periods of water scarcity through morphological, physiological, and molecular adaptations. This trait involves reduced water loss, enhanced water uptake capacity, and cellular protection mechanisms.
Plain English
Plants' ability to survive and function with very little water available.
Etymology & History
Usage
"Breeding programs prioritize drought tolerance to develop crop varieties suitable for arid regions."
Style guide notes: Capitalize when referring to specific breeding trait classifications; use 'drought-tolerant' as adjective.
Also known as
Contrasted with
Related Terms
Frequently Asked Questions
What mechanisms enable drought tolerance in plants?
Deep root systems, reduced leaf surface area, waxy cuticles, and water storage tissues enhance drought survival.
How is drought tolerance measured in research?
Scientists assess water potential, photosynthetic rate, and plant survival under controlled water-deficit conditions.
Why Test Candidates on This?
Critical assessment term for evaluating plant resilience under climate change scenarios.
Required skill level: Mid