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      Germinación de semillas de ají (Capsicum sinense) estimuladas electromagnéticamente Translated title: Electromagnetic stimulated chili (Capsicum sinense) seed germination

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          Abstract

          Los campos magnéticos tienen efecto sobre los sistemas vivientes y materiales biológicos, especialmente en el incremento de la germinación de semillas y el aumento de biomasa en plantas. Con el objetivo de determinar el efecto de los campos electromagnéticos sobre el tiempo y el porcentaje de germinación de semillas de ají, var. Limo Rojo, se utilizaron bobinas para generar campos electromagnéticos continuos (DC) y alternos (AC) a intensidades de 30 y 60 militeslas (mT) y tiempos de exposición de las semillas de 30, 60 y 120 min, con un diseño factorial de múltiples niveles completamente al azar. Se encontraron diferencias significativas entre los tratamientos en la cantidad de semillas germinadas por día, siendo más marcado a partir del séptimo día después de la siembra hasta el doceavo día, mostrando que al incrementar la intensidad y el tiempo de exposición al campo electromagnético, se redujo el tiempo de germinación. En lo que respecta al porcentaje de germinación final, no se encontraron diferencias significativas entre tratamientos. Los campos electromagnéticos tuvieron efecto en el tiempo de germinación mas no en el porcentaje de germinación de semillas de ají.

          Translated abstract

          Magnetic fields have effects on living systems and biological materials, particularly in seed germination and plant biomass increment. In order to determine the effect of electromagnetic fields on time and percentage of chili var. Limo Rojo seed germination, coils were used to generate continuous (DC) and alternating (AC) electromagnetic fields with intensities of 30 and 60 mT, and exposure times of seeds of 30, 60 and 120 min, with a completely random multi-level factorial design. Significant differences were found between the treatments for the number of germinated seeds per day, especially on the seventh day after planting until the twelfth day, where the germination time was reduced with intensity and time of exposure to the electromagnetic field increment. For the percentage of germination, no significant differences were found between the treatments. The electromagnetic fields had an effect on germination time but not on percentage of chili germination.

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          Most cited references29

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          Magnetoreception in plants.

          This article reviews phenomena of magnetoreception in plants and provides a survey of the relevant literature over the past 80 years. Plants react in a multitude of ways to geomagnetic fields-strong continuous fields as well as alternating magnetic fields. In the past, physiological investigations were pursued in a somewhat unsystematic manner and no biological advantage of any magnetoresponse is immediately obvious. As a result, most studies remain largely on a phenomenological level and are in general characterised by a lack of mechanistic insight, despite the fact that physics provides several theories that serve as paradigms for magnetoreception. Beside ferrimagnetism, which is well proved for bacterial magnetotaxis and for some cases of animal navigation, two further mechanisms for magnetoreception are currently receiving major attention: (1) the "radical-pair mechanism" consisting of the modulation of singlet-triplet interconversion rates of a radical pair by weak magnetic fields, and (2) the "ion cyclotron resonance" mechanism. The latter mechanism centres around the fact that ions should circulate in a plane perpendicular to an external magnetic field with their Lamor frequencies, which can interfere with an alternating electromagnetic field. Both mechanisms provide a theoretical framework for future model-guided investigations in the realm of plant magnetoreception.
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            Effect on germination and early growth characteristics in sunflower (Helianthus annuus) seeds exposed to static magnetic field.

            Seeds of sunflower (Helianthus annuus) were exposed in batches to static magnetic fields of strength from 0 to 250mT in steps of 50mT for 1-4h in steps of 1h. Treatment of sunflower seeds in these magnetic fields increased the speed of germination, seedling length and seedling dry weight under laboratory germination tests. Of the various treatments, 50 and 200mT for 2h yielded the peak performance. Exposure of seeds to magnetic fields improved seed coat membrane integrity and reduced the cellular leakage and electrical conductivity. Treated seeds planted in soil resulted in statistically higher seedling dry weight, root length, root surface area and root volume in 1-month-old seedlings. In germinating seeds, enzyme activities of alpha-amylase, dehydrogenase and protease were significantly higher in treated seeds in contrast to controls. The higher enzyme activity in magnetic-field-treated sunflower seeds could be triggering the fast germination and early vigor of seedlings.
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              Exposure of maize seeds to stationary magnetic fields: Effects on germination and early growth

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                Author and article information

                Journal
                rcch
                Revista Colombiana de Ciencias Hortícolas
                rev.colomb.cienc.hortic.
                Sociedad Colombiana de Ciencias Hotícolas, Universidad Pedagógica y Tecnológica de Colombia (Bogotá, Distrito Capital, Colombia )
                2011-2173
                June 2013
                : 7
                : 1
                : 46-54
                Affiliations
                [01] Cali orgnameUniversidad del Valle orgdiv1Facultad de Ciencias orgdiv2Departamento de Física Colombia
                [02] Cali orgnameUniversidad del Valle orgdiv1Escuela de Ingeniería de Recursos Naturales y del Ambiente (Eidenar) Colombia
                Article
                S2011-21732013000100005 S2011-2173(13)00700105
                3b4a5423-8216-49cf-a855-1cfa73422445

                This work is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International License.

                History
                : 28 May 2013
                : 19 March 2013
                Page count
                Figures: 0, Tables: 0, Equations: 0, References: 19, Pages: 9
                Product

                SciELO Colombia

                Categories
                Sección de hortalizas

                biomagnetism,biomagnetismo,solenoid,solenoide,campos magnéticos,magnetic fields

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