Measurement of the tree root growth using electrical impedance spectroscopy

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...

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Main Authors: Repo, Tapani, Laukkanen, Janne, Silvennoinen, Raimo
Format: Article
Language:English
Published: Finnish Society of Forest Science 2005-01-01
Series:Silva Fennica
Online Access:https://www.silvafennica.fi/article/380
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author Repo, Tapani
Laukkanen, Janne
Silvennoinen, Raimo
author_facet Repo, Tapani
Laukkanen, Janne
Silvennoinen, Raimo
author_sort Repo, Tapani
collection DOAJ
description 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 Pearsonâs correlation coefficient r = â0.70).
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spelling doaj.art-3af621192fc748a8969828b2879976de2022-12-21T18:34:07ZengFinnish Society of Forest ScienceSilva Fennica2242-40752005-01-0139210.14214/sf.380Measurement of the tree root growth using electrical impedance spectroscopyRepo, TapaniLaukkanen, JanneSilvennoinen, RaimoThe 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 Pearsonâs correlation coefficient r = â0.70).https://www.silvafennica.fi/article/380
spellingShingle Repo, Tapani
Laukkanen, Janne
Silvennoinen, Raimo
Measurement of the tree root growth using electrical impedance spectroscopy
Silva Fennica
title Measurement of the tree root growth using electrical impedance spectroscopy
title_full Measurement of the tree root growth using electrical impedance spectroscopy
title_fullStr Measurement of the tree root growth using electrical impedance spectroscopy
title_full_unstemmed Measurement of the tree root growth using electrical impedance spectroscopy
title_short Measurement of the tree root growth using electrical impedance spectroscopy
title_sort measurement of the tree root growth using electrical impedance spectroscopy
url https://www.silvafennica.fi/article/380
work_keys_str_mv AT repotapani measurementofthetreerootgrowthusingelectricalimpedancespectroscopy
AT laukkanenjanne measurementofthetreerootgrowthusingelectricalimpedancespectroscopy
AT silvennoinenraimo measurementofthetreerootgrowthusingelectricalimpedancespectroscopy