Pressure Chamber and Air Flow Porometer for Rapid Field Indication of Water Status and Stomatal Condition in Wheat
- 1 January 1977
- journal article
- research article
- Published by Cambridge University Press (CUP) in Experimental Agriculture
- Vol. 13 (4) , 341-351
- https://doi.org/10.1017/s0014479700008103
Abstract
SUMMARY: Plant water potential and leaf diffusive conductance, key features of plant responses to water stress in field experiments, can be estimated, respectively, by xylem pressure potential measured with the pressure chamber apparatus, and leaf permeability measured with the air flow porometer. This paper describes modifications to these two techniques in order to increase the rapidity of measurements in wheat to 60/h with the pressure chamber, and 200/h with the porometer. Rapid measurements are needed because of the large within-and between-plot errors encountered with daytime measurements in typical field experiments, examples of which are presented.This publication has 10 references indexed in Scilit:
- Water Relations of Wheat Leaves in the Field1Agronomy Journal, 1976
- Leaf Water Potential: Comparison of Pressure Chamber and in situ Hygrometer on Five Herbaceous Species 1Crop Science, 1976
- Carbon dioxide exchange in relation to sink demand in wheatPlanta, 1976
- Exclusion Errors in Pressure Chamber Estimates of Leaf Water PotentialAnnals of Botany, 1975
- The Use of the Pressure Chamber Technique for Measurement of the Water Potential of Transpiring Plant OrgansPhysiologia Plantarum, 1975
- Stomatal Behavior of Wheat Cultivars in Relation to Their Transpiration, Photosynthesis, and Yield1Agronomy Journal, 1975
- The Pressure Chamber as an Instrument for Ecological ResearchPublished by Elsevier ,1975
- Construction, Calibration and Field Use of a Rapid-Reading Viscous Flow PorometerJournal of Applied Ecology, 1972
- RESPONSE OF ADAXIAL AND ABAXIAL STOMATA TO LIGHTNew Phytologist, 1970
- Sap Pressure in Vascular PlantsScience, 1965