To study the effects of pulsingmagnetic fields of the type used to stimulate bone healing on the rate of root formation in plant cuttings.
Background/further details
The authors hoped to demonstrate that pulsingmagnetic fields can alter the formation of roots and thus perhaps be of use in the propagation of plants by asexual means. Six cuttings of each species were used for both the control and exposure groups (total of 12 cuttings). All experiments were run in duplicate.
pair of 20 cm x 20 cm Helmholtz-aiding air-gap coils with 24 turns of Nr. 15 B&S gauge enamelled magnetic wire; plastic plant containers placed between the coils
The number of roots produced by each cutting was altered significantly for only two types of cuttings: Begonia and Forsythia hardwood. These two developed approximately twice as many roots in exposure as in control groups. For all types of cuttings, root elongation was suppressed by the magnetic fieldexposure. The level of suppression was significant for all classes except the Forsythia hardwood. In conclusion, the magnetic field may have a positive effect on the differentiation process (root formation) and a repressive effect on proliferation/cell enlargment (root length). Further studies are needed to elucidate the mechanisms.
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