home
focus and scope
journal policies
Focus and scope Peer review process Openness and transparency Publication frequency Archiving Article processing charges Criteria for authorship and contributors Conflicts of interest Allegations of misconduct Complaints process Sponsors Journal History
author instructions
General Metadata Article Categories Openness and transparency Submission of manuscripts Manuscript text Citation standards Tables and figures Acknowledgements, funding and availability of research materials and data Supplementary files Procedures for revised and accepted manuscripts
special issues
editors
open access
other journals
Metsätieteen aikakauskirja Dissertationes Forestales Suo - Mires and Peat
contact
financial information
Full text of this article is only available in PDF format.

Tapani Repo (email), Janne Laukkanen, Raimo Silvennoinen

Measurement of the tree root growth using electrical impedance spectroscopy

Repo T., Laukkanen J., Silvennoinen R. (2005). Measurement of the tree root growth using electrical impedance spectroscopy. Silva Fennica vol. 39 no. 2 article id 380. https://doi.org/10.14214/sf.380

Abstract

The non-destructive evaluation of plant root growth is a challenge in root research. In the present study we aimed to develop electrical impedance spectroscopy (EIS) for that purpose. Willows (Salix myrsinifolia Salisb.) were grown from cuttings in a hydroponic culture in a growth chamber. Root growth was monitored at regular intervals by a displacement method and compared with the EIS parameters of the plants. To measure its impedance spectrum (IS) (frequency range from 40 Hz to 340 kHz) each plant was set in a measuring cell filled with a solution of the hydroponic culture. The IS was measured using a two-electrode measuring system. A silver needle electrode was connected to the stem immediately above the immersion level and a platinum wire was placed in the solution. The measurements were repeated twice weekly for a root growth period of one month. The IS of the entity consisting of a piece of stem, roots and culture solution were modelled by means of an electric circuit consisting of two ZARC-Cole elements, one constant-phase element, and a resistor. On the plant basis, an increase in root volume by growth correlated with a reduction in the sum of resistances in the ZARC-Cole elements (mean Pearson’s correlation coefficient r = –0.70).

Keywords
willow; CNLS-curve fitting; displacement method; distributed electric model; hydroponics; impedance analysis

Author Info
  • Repo, The Finnish Forest Research Institute, Joensuu Research Centre, P.O. Box 68, FI-80101 Joensuu, Finland E-mail tapani.repo@metla.fi (email)
  • Laukkanen, University of Joensuu, Department of Physics, P.O. Box 111, FI-80101 Joensuu, Finland E-mail jl@nn.fi
  • Silvennoinen, University of Joensuu, Department of Physics, P.O. Box 111, FI-80101 Joensuu, Finland E-mail rs@nn.fi

Received 28 October 2004 Accepted 17 March 2005 Published 31 December 2005

Views 3919

Available at https://doi.org/10.14214/sf.380 | Download PDF

Creative Commons License CC BY-SA 4.0
Register
Click this link to register to Silva Fennica.
Log in
If you are a registered user, log in to save your selected articles for later access.
Contents alert
Sign up to receive alerts of new content
Export reference to EndNote / RefWorks
Related articles
Your selected articles
Your search results
Hänninen H., Kellomäki S. et al. (1996) Overwintering and productivity of Scots pine in .. Silva Fennica vol. 30 no. 2–3 article id 5590
Leinonen I., Hänninen H. et al. (1996) Testing of frost hardiness models for Pinus sylv.. Silva Fennica vol. 30 no. 2–3 article id 5583
Hänninen H., Kellomäki S. et al. (1993) Effect of increased winter temperature on the on.. Silva Fennica vol. 27 no. 4 article id 5518
Repo T., (1991) Rehardening potential of Scots pine seedlings du.. Silva Fennica vol. 25 no. 1 article id 5437
Valkonen M.-L., Hänninen H. et al. (1990) Frost hardiness of Scots pine seedlings during d.. Silva Fennica vol. 24 no. 4 article id 5433
Repo T., (1988) Physical and physiological aspects of impedance .. Silva Fennica vol. 22 no. 3 article id 5351
Repo T., Volanen V. et al. (2022) No difference in the maximum frost hardiness of .. Silva Fennica vol. 56 no. 2 article id 10620
Räisänen M., Repo T. et al. (2009) Cold acclimation of Norway spruce roots and shoo.. Silva Fennica vol. 43 no. 2 article id 208
Aphalo P. J., Lahti M. et al. (2006) Responses of silver birch saplings to low soil t.. Silva Fennica vol. 40 no. 3 article id 328
Repo T., Laukkanen J. et al. (2005) Measurement of the tree root growth using electr.. Silva Fennica vol. 39 no. 2 article id 380
Partanen J., Leinonen I. et al. (2001) Effect of accumulated duration of the light peri.. Silva Fennica vol. 35 no. 1 article id 608
Silva Fennica · Finnish Society of Forest Science