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:
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