Study type: Medical/biological study (experimental study)

Exposure of maize seeds to stationary magnetic fields: effects on germination and early growth. med./bio.

Published in: Environ Exp Bot 2007; 59 (1): 68-75

Aim of study (acc. to author)

To examine the effect of exposure of maize seeds and seedlings to magnetic fields on the germination and early growth.

Background/further details

Three groups were examined: 1.) control group, 2.) exposure to 125 mT and 3.) exposure to 250 mT. The exposure duration was 1 minute, 10 minutes, 20 minutes, 1 hour, 24 hours or continuous.

Endpoint

Exposure

Exposure Parameters
Exposure 1:
Exposure duration: 1 min, 10 min, 20 min, 1 h, 24 h or continuously
Exposure 2:
Exposure duration: 1 min, 10 min, 20 min, 1 h, 24 h or continuously

General information

values for the magnetic field have been provided by the manufactors and have been confirmed by measurements

Exposure 1

Main characteristics
Frequency
Type
Exposure duration 1 min, 10 min, 20 min, 1 h, 24 h or continuously
Exposure setup
Exposure source
Chamber magnet was placed at the top of the vessel and rolls of paper carrying the seeds were placed in the hole of the magnet
Setup magnet was placed at the top of the vessel
Additional info local geomagnetic field 42 µT
Parameters
Measurand Value Type Method Mass Remarks
magnetic flux density 125 mT - measured - at the core of the magnet

Exposure 2

Main characteristics
Frequency
Type
Exposure duration 1 min, 10 min, 20 min, 1 h, 24 h or continuously
Exposure setup
Exposure source
Parameters
Measurand Value Type Method Mass Remarks
magnetic flux density 250 mT - measured - at the core of the magnet

Exposed system:

Methods Endpoint/measurement parameters/methodology

Investigated system:
Time of investigation:
  • after exposure

Main outcome of study (acc. to author)

Seeds and seedlings exposed to a magnetic field for 24 hours or continuously were significantly taller and heavier than their untreated controls. The germination rate of exposed seeds was significantly enhanced when compared to the control group (the longer exposed the earlier germinated).
The authors conclude that exposure of maize seeds and seedlings to magnetic fields could promote the germination and the early growth.

Study character:

Study funded by

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