Claim · model-written summary
Under heat stress, wheat water use efficiency for grain decreased by 62%.
- Taxon
- wheat
Triticum aestivume1 - Treatment
- heat stresse2
- Outcome
- water use efficiencye2
- Direction
- strongly decreasede2
- Value
- 62%e2
- Qualifier
- as a result of a small grain yielde2
Not reportedMaterialGeneCompoundOrgan / stageInteractorInteractor roleSecond interactorSecond interactor roleComparatorSetting
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“exposing wheat plants ( Triticum aestivum L. cv. Thasos) either to day/night temperatures of 20/20°C (control conditions) or of 30/25°C (heat stress)”
e2“under heat stress, the water use efficiency ( WUE grain ) was strongly decreased by 62% as a result of a small grain yield”
Title
Birgit W. Hütsch; Dana Jahn; Sven Schubert Journal of Agronomy and Crop Science 2018. doi:10.1111/jac.12298
Other claims from this paper (15)
- Intervention effect Heat stress shortened the development phases of wheat.
- Intervention effect Heat stress decreased total above-ground biomass of wheat by 19% to 41%.
- Intervention effect At grain filling, heat stress depressed wheat grain yield by 77%.
- Intervention effect At maturity, heat stress depressed wheat grain yield by 58%.
- Intervention effect Heat-stressed wheat had a significantly higher ear number per plant than the control.
- Observation At maturity, the ear number per plant of heat-stressed wheat more than doubled.
- Observation Heat stress strongly decreased kernel number per ear by 83% during grain filling.
- Observation Heat stress strongly decreased kernel number per ear by 75% at maturity.
- Observation Individual kernel weight of wheat decreased by 23% at maturity.
- Intervention effect Heat-stressed wheat had a 36% lower harvest index than the control.
- Intervention effect Heat stress did not significantly change sucrose, glucose and fructose concentrations in ears and grains.
- Intervention effect Heat stress reduced sink capacity in wheat, with smaller and fewer kernels than the control.
- Mechanism The sink-limiting step during kernel set is probably active transport of hexoses into the developing kernels.
- Observation The supply of assimilates to wheat kernels under heat stress was not restricted.
- Mechanism Heat-stressed wheat presumably transpired more without higher total water consumption.