Influence of intensity and exposure duration of magnetic field on behavior of seed germination and seedling growth of wheat (Triticum aestivum L.)

بوم شناسی کشاورزی

Article 5, Volume 3, Issue 4 - Serial Number 10, December 2011, Pages 482-490   

Document Type: Scientific - Research

DOI: 10.22067/jag.v3i4.14905

Authors

Hasan Feizi^{* 1}; Parviz Rezvani Moghaddam¹; Alireza Koocheki¹; Naser Shah Tahmassebi²; Amir Fotovat³

¹Department of Agronomy, Faculty of Agriculture, Ferdowsi University of Mashhad, Mashhad, Iran

²Department of Physics, Faculty of Science, Ferdowsi University of Mashhad, Mashhad, Iran

³Department of Soil Science, Faculty of Agriculture, Ferdowsi University of Mashhad, Iran

Abstract

In order to study the effect of intensity and exposure duration magnetic field on wheat (Triticum aestivum L.) seed germination an experiment was conducted in laboratory of Ferdowsi University of Mashhad, Iran. The experiment was including 11 treatments as three level of magnetic field intensities (pretreatment of seeds with 50, 100 and 150 mT magnetic field) and three exposure durations (10, 20 and 30 minutes), permanent magnetic field with intensity 3 mT and control. Results indicated that the lowest mean germination time (MGT) was found in 100 mT magnetic field with 20 min exposure duration. MGT was reduced by 43 percent in comparison to control at 100 mT magnetic field with 20 min exposure duration. In contrast the highest and the lowest germination rate was showed in 100 mT magnetic field with 20 min exposure duration and 150 mT magnetic field with all of the durations respectively. Magnetic treatments not affected on seed germination. Magnetic field stimulated shoot growth more than root growth. The highest shoot length was achieved in 100 mT magnetic field with 10, 30 and 20 min exposure duration and the lowest was shown in control. Magnetic treatments increased shoot length by 27 percent comparing to control. Magnetic treatments not affected shoot, root, seedling dry matter, and vigor index II. It seems that low magnetic field intensities had a simulative effect on germination traits whereas high intensities had a negative effect.

Keywords

Mean germination time; Physical treatments; Seedling length; Vigor index