Note to users. If you're seeing this message, it means that your browser cannot find this page's style/presentation instructions -- or possibly that you are using a browser that does not support current Web standards. Find out more about why this message is appearing, and what you can do to make your experience of our site the best it can be.

Science 16 December 1966:
Vol. 154. no. 3755, pp. 1459 - 1460
DOI: 10.1126/science.154.3755.1459
Prev | Table of Contents | Next

Articles

Isopiestic Technique: Measurement of Accurate Leaf Water Potentials

J. S. Boyer 1

1 Connecticut Agricultural Experiment Station, New Haven; Department of Botany, University of Illinois, Urbana, Illinois 61803.

Sunflower leaf tissue of known potential was obtained by equilibrating an interveinal leaf sample, at constant temperature in air, with a potential determined by sucrose solutions. Equilibration occurred within 17 hours. Except for one determination, all measurements of the water potential of the equilibrated samples with an isopiestic technique were within 0.1 bar of the known potential of the tissue. This finding indicates that thermocouple psychrometers can measure accurate values of water potential when an isopiestic technique is used.


THIS ARTICLE HAS BEEN CITED BY OTHER ARTICLES:
Root pressurization affects growth-induced water potentials and growth in dehydrated maize leaves.
A.-C. Tang and J. S. Boyer (2003)
J. Exp. Bot. 54, 2479-2488
   Abstract »    Full Text »    PDF »
Growth-induced water potentials and the growth of maize leaves.
A.-C. Tang and J. S. Boyer (2002)
J. Exp. Bot. 53, 489-503
   Abstract »    Full Text »    PDF »
Root Xylem Embolisms and Refilling. Relation to Water Potentials of Soil, Roots, and Leaves, and Osmotic Potentials of Root Xylem Sap.
M. E. McCully (1999)
Plant Physiology 119, 1001-1008
   Abstract »    Full Text »
Mycorrhizal Enhancement of Water Transport in Soybean.
G. R. Safir, J. S. Boyer, and J. W. Gerdemann (1971)
Science 172, 581-583
   Abstract »    PDF »


To Advertise     Find Products

Science. ISSN 0036-8075 (print), 1095-9203 (online)