Abhary Mohammad K, Akhkha Abdullah
Biology Department, Faculty of Science, Taibah University, Medinah, Saudi Arabia.
Bioelectromagnetics. 2023 Jan;44(1-2):47-56. doi: 10.1002/bem.22438. Epub 2023 Feb 17.
Earth's biosphere is surrounded by magnetic fields that affect all living organisms. A plant's response to magnetic fields is displayed in terms of its seed's vigor, growth, and yield. Examining seed germination in such magnetic fields is the first step in the investigation of how magnetic fields might be used to enhance plant growth and maximize crop performance. In this study, salinity-sensitive Super Strain-B tomato seeds were primed with the northern and southern poles of neodymium magnets of 150, 200, and 250 mT. The magneto-primed seeds showed a significant increase in germination rate and speed, where the orientation of the magnet was identified as being crucial for germination rate and the orientation of seeds towards the magnet was shown to affect the germination speed. The primed plants exhibited enhanced growth characteristics, including longer shoots and roots, larger leaf area, more root hairs, higher water content, and more tolerance to salinity levels, up to 200 mM NaCl. All magneto-primed plants showed a significant decrease in chlorophyll content, continuous chlorophyll fluorescence yield (Ft), and quantum yield (QY). The salinity treatments decreased all chlorophyll parameters in control plants, significantly, but did not lower such parameters in magneto-primed tomatoes. The results of this study illustrate the positive effects of neodymium magnet on the growth and development of tomato plants in terms of their germination, growth, and salinity tolerance, and negatively affected the chlorophyll content in tomato leaves. © 2023 Bioelectromagnetics Society.
地球的生物圈被影响所有生物的磁场包围。植物对磁场的反应体现在其种子的活力、生长和产量方面。研究在这种磁场中的种子萌发是探究如何利用磁场促进植物生长并使作物性能最大化的第一步。在本研究中, 盐敏感型超级B品系番茄种子用150、200和250 mT的钕磁铁的北极和南极进行引发处理。经磁引发处理的种子在发芽率和发芽速度上显著提高，其中磁体的方向被确定对发芽率至关重要，且种子朝向磁体的方向被证明会影响发芽速度。引发处理后的植株表现出增强的生长特性，包括更长的茎和根、更大的叶面积、更多的根毛、更高的含水量以及对高达200 mM NaCl盐度水平的更强耐受性。所有经磁引发处理的植株在叶绿素含量、叶绿素持续荧光产量（Ft）和量子产量（QY）方面均显著下降。盐处理显著降低了对照植株的所有叶绿素参数，但在经磁引发处理的番茄中并未降低这些参数。本研究结果表明，钕磁铁在番茄植株的萌发、生长和耐盐性方面对其生长发育具有积极影响，但对番茄叶片中的叶绿素含量有负面影响。© 2023生物电磁学协会。
