Claim · model-written summary
A porometer apparatus permitted light responses of wheat stomata to be followed while cavities were swept with carbon dioxide-free air.
- Taxon
- wheat
Triticum aestivume0 - Outcome
- light responses of wheat stomatae0
Not reportedMaterialGeneCompoundOrgan / stageInteractorInteractor roleSecond interactorSecond interactor roleTreatmentComparatorSettingDirectionValueQualifier
Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Verbatim
e0“An apparatus is described enabling light responses of wheat stomata to be followed by periodical porometer readings, between which the substomatal cavities can be swept with carbon dioxide-free air forced in through the stomata”
Title
O. V. S. HEATH; J. RUSSELL Journal of Experimental Botany 1954. doi:10.1093/jxb/5.1.1
Other claims from this paper (5)
- Observation Wheat stomata responded significantly to light intensity variation from 90 to 800 f.c.
- Observation A swept control leaf area 2 cm away showed a significant light response of smaller magnitude under constant illumination.
- Mechanism The authors inferred an indirect light effect on wheat stomata and possibly a direct effect on guard cells.
- Mechanism The transmitted light effect was argued not to operate through intercellular spaces or cell-to-cell carbon dioxide gradients.
- Mechanism Neither proposed light effect probably operates by reducing internal guard-cell carbon dioxide.