Effect of Seed Pretreatment by Magnetic Fields on Seed Germination and Ontogeny Growth of Agricultural Plants
Lentil belongs to Fabaceae family which has been cultivated since 8000 years ago. Nowadays different varieties of lentil are considered to be optimized because of its nutrient impor-tant and some medicinal properties. An experimental study of the inflence of external magnetic field on the germination, ontogeny growth and anatomical structure were carried out. In this research, seeds of Lentil (Lens culinaris L.) were magnetically pretreated by different magnetic field intensities from 0.06 to 0.36 tesla (T) for different periods of time 5, 10, 20 minutes. Some seeds were plunged into the water during exposure to magnetic fields. Then seeds were placed in germinator and seed germination rate and seedling excretion rate were measured. Mean germina-tion time showed a reduction for most of magnetic treatments therefore their rate of germination was increased. The range of greatest increase of germination were obtained from 0.18T to 0.24 T. 15 days seedlings grown from pretreated seeds, which were plunged into the water during expo-sure to magnetic fields with 0/06 tesla intensity in 10, 20 minutes treatments, showed less and disorder growth in comparison to control. This decreased growth in 20 minutes treatment was more than 10 minutes treatment. On the other hand, 15 days seedlings grown from pretreated seeds in the same condition, but without water, showed more growth and leaf size increased too. Anatomical examination were carried out on 15 days seedlings, which were grown up from pretreated seeds in green house condition with natural light cycle 14-h light/10-hdarkness and 25§3±C daily night temperature. The results of experiments suggested that stele and xylem vessels develop and grow more than control and parenchyma cells are larger than control. The greatest difference was observed in leaf section. Air chambers and parenchyma cells were larger than control. These results suggested that some intensities of magnetic field improve significantly seed germination and growth of plants.
Ahmad Majd Azita Shabrangi
Islamic Azad University,North Branch,Tehran,Iran Physics Society,Plasma Physics Research Centre,Science and Research Campus Islamic Azad University,T
国际会议
Progress in Electromagnetics Research Symposium 2009(2009年电磁学研究新进展学术研讨会)(PIERS 2009)
北京
英文
1137-1141
2009-03-23（万方平台首次上网日期，不代表论文的发表时间）