ABSTRACT

The response of plants to magnetic fields (MF) is not fully understood. This work studies the effects of pulsed MF on the germination and growth of Allium cepa roots. Onions were exposed to 25Hz, 1.5mT, 33h. Pulsed MF was generated by a Helmholtz-type equipment that generated rectangular voltage pulses. The results showed that fewer roots grew in the specimens exposed to pulsed MF (14±6 roots on day 1 to 21±8 on day 4) than in the control groups (32±17 to 48±23) (p<0.05 Friedman). Control specimens showed a root mean length of 7±4 mm (day 1) and 24±10 mm (day 4). The specimens treated with pulsed MF showed a length of 4±2 mm (day 1), reaching 18±9 mm on day 4 (p<0.001 ANOVA). In conclusion, the exposure of Allium cepa specimens to 25Hz, 1.5mT pulsed MF during 33h produces a decrease in the germination and growth of roots.

摘要

植物对磁场 (MF) 的反应尚不完全清楚。这项工作研究了脉冲 MF 对洋葱根的萌发和生长的影响。洋葱暴露于 25Hz、1.5mT、33h。脉冲MF由产生矩形电压脉冲的亥姆霍兹型设备产生。结果表明，与对照组相比，暴露于脉冲 MF 的标本（第 1 天 14±6 个根至第 4 天 21±8 个）的根生长量少于对照组（32±17 至 48±23）（p<0.05 Friedman） . 对照样本的根平均长度为 7±4 毫米（第 1 天）和 24±10 毫米（第 4 天）。用脉冲 MF 处理的样本显示长度为 4±2 mm（第 1 天），在第 4 天达到 18±9 mm（p<0.001 ANOVA）。总之，Allium cepa的曝光将标本置于 25Hz、1.5mT 脉冲 MF 下 33h 会导致根的发芽和生长减少。