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Root hydraulic-properties of spruce measured with the pressure probe

Title data

Hallgren, Stephen W. ; Rüdinger, Marcus ; Steudle, Ernst:
Root hydraulic-properties of spruce measured with the pressure probe.
In: Plant and Soil. Vol. 167 (November 1994) Issue 1 . - pp. 91-98.
ISSN 1573-5036
DOI: https://doi.org/10.1007/BF01587603

Abstract in another language

The root pressure probe was used for the first time to measure the hydraulic properties of entire root systems of young "Picea abies". Hydraulic conductance was measured by osmotic and hydrostatic pressure relaxation techniques. Osmotic experiments were conducted by changing the nutrient solution and hydrostatic experiments by causing flow across the root with the pressure probe and with external pressure applied to the root system or to the cut stem of the excised root system. Usually,Picea abies root systems did not develop appreciable root pressure (< 0.02 MPA) and could be induced to reach a root pressure of 0.07 MPa by treating with KNO3. In general, hydraulic conductance of the root system was large, but it was much smaller in the osmotic than in the hydrostatic experiments. Both hydrostatic techniques gave similar results. The results were explainable by a composite transport model of the root.

Further data

Item Type: Article in a journal
Refereed: Yes
Additional notes: BAYCEER33688
Institutions of the University: Research Institutions > Research Centres > Bayreuth Center of Ecology and Environmental Research- BayCEER
Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Biology > Chair Plant Ecology
Faculties
Faculties > Faculty of Biology, Chemistry and Earth Sciences
Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Biology
Research Institutions
Research Institutions > Research Centres
Result of work at the UBT: Yes
DDC Subjects: 500 Science
Date Deposited: 12 Nov 2015 07:44
Last Modified: 22 Feb 2016 10:26
URI: https://eref.uni-bayreuth.de/id/eprint/22421