Relative water content
nounPronunciation: ˈrɛlətɪv ˈwɔːtə ˈkɒntɛnt
A measure of the water status of plant tissue expressed as the ratio of actual water content to maximum water-holding capacity at full turgor. It is widely used to assess plant water deficit severity and physiological drought stress intensity.
Plain English
A measurement showing how much water a plant tissue currently holds compared to how much it can hold.
Etymology & History
Usage
"Relative water content declined from 85% to 60% as drought conditions intensified over two weeks."
Style guide notes: Always express as percentage (%) and include methodology for obtaining turgid weight.
Also known as
Contrasted with
Related Terms
Frequently Asked Questions
How is relative water content calculated?
RWC = (Fresh weight - Dry weight) / (Turgid weight - Dry weight) × 100%.
What RWC values indicate severe drought stress?
Values below 60% typically indicate severe water deficit and physiological stress conditions.
Why Test Candidates on This?
RWC is fundamental in drought stress studies as it directly correlates with plant performance and stress severity.
Required skill level: Junior