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vol. 14, nr. 1 (2009)
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Alternating magnetic field irradiation effects on three genotype maize seed field performance
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C.H.Aguilar1, Arturo Dominguez-Pacheco3, Aquiles Carballo Carballo1, Alfredo Cruz-Orea2, Rumen Ivanov3, Jose Luis López Bonilla4, Justo Pastor Valcarcel Montañez1
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1 Instituto Politécnico Nacional, Sepi-Esime, Zacatenco, Unidad Profesional “Adolfo López Mateos”. Col. Lindavista. México D.F., CP 07738, México |
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2 Colegio de Postgraduados. IREGEP. Programa de Semillas. Montecillo. Edo. de México, CP 56180, México |
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3 Departamento de Física, CINVESTAV – IPN, A. P. 14-740, México D.F., C.P. 07360, México |
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4 Unidad Académica de Física. Universidad Autónoma de Zacatecas. A.P. 580, Zacatecas |
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5 Universidad Sur colombiana, A.A., 385 Neiva (Huila), Colombia |
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vol. 14 (2009), nr. 1,
pp. 7-17
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abstract:
In this study alternating magnetic field treatments at low frequency (60 Hz) with combinations of three magnetic flux densities (20, 60 and 100 mT) and three exposure times (7.5, 15 and 30 minutes) were used as pre-sowing seed treatments in three maize (Zea mays L.) genotypes (CL-12 X CL-11, CL-4 X CL-1 and CL-13 x CL-1). In the case of CL-12 X CL-11 genotype these treatments increased significantly the seedling emergence rate, seedling dry weight and emergence in soil. The best treatment was found at magnetic flux density of 100 mT and exposure time of 7.5 min, with significant improvements in seedling emergence rate by 123.2%, field emergence by 110% and seedling dry weight, 21 days after planting, by 30.1%. In the case of CL-4 X CL-1 genotype it was found a negative biostimulation for seedling emergence percentage; finally in the CL-13 x CL-1 genotype there was not any significant effect. These results show that electromagnetic field treatment provide a simple and ecologically well compatible method to improve seed vigour in maize but is necessary to find the optimal irradiation parameters to induce a positive biostimulation in the maize seeds which also depends on the seed genotype.
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keywords:
zea mays, electromagnetic field, seed vigour, biostimulation
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original in:
English
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