Claim · model-written summary
Low K increased stomatal conductance compared with high K under drought stress.
- Taxon
- canola
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Brassica napus var. napust0 - Treatment
- low K treatmentse0
- Outcome
- stomatal conductancee0
- Direction
- increasede0
- Qualifier
- under drought stresse0
- Comparator
- high Ke0
Not reportedMaterialGeneCompoundOrgan / stageInteractorInteractor roleSecond interactorSecond interactor roleSettingValue
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
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Verbatim
e0“The low K treatments had increased transpiration and stomatal conductance and reduced relative turgor pressure compared with high K, under drought stress.”
t0“canola”
Title
M. A. Bergmann UWA Profiles and Research Repository (University of Western Australia) 2016
Other claims from this paper (13)
- Intervention effect Mild potassium deficiency significantly reduced canola dry weight only after long-term deprivation.
- Observation Canola maintained similar size across a range of applied potassium levels.
- Mechanism A shift in root growth toward a smaller shoot:root ratio may explain stable size across potassium levels.
- Intervention effect Low K increased transpiration compared with high K under drought stress.
- Intervention effect Low K reduced relative turgor pressure compared with high K under drought stress.
- Observation Stomata remained open under low k and closed under high K.
- Intervention effect Higher potassium supply produced a higher photosynthesis rate under water stress than low potassium.
- Mechanism Abscisic acid and ethylene interaction may explain stomatal opening and higher transpiration and conductance.
- Recommendation The authors recommend measuring abscisic acid and ethylene under varying water and potassium treatments.
- Recommendation The authors recommend studying canola responses across soil moisture and potassium levels, especially 40-60 mg kg-1.
- Recommendation The authors suggest shoot:root ratio may help select drought-tolerant canola.
- Recommendation The authors recommend investigating nitrogen-potassium interaction in canola drought response.
- Recommendation Higher potassium fertilizer may be needed when applying relatively high nitrogen rates.