Study on mechanism of germination control for crop seed subjected to pulsed discharge produced by polarity reversed voltage pulses in ns range

2015 Fiscal Year Final Research Report

• Project/Area Number: 25420259
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Power engineering/Power conversion/Electric machinery
• Research Institution: Ehime University
• Principal Investigator: kadowaki kazunori 愛媛大学, 理工学研究科, 教授 (60291506)
• Co-Investigator(Kenkyū-buntansha): OZAKI Ryotaro 愛媛大学, 大学院理工学研究科, 准教授 (90535361)
• Co-Investigator(Renkei-kenkyūsha): TSUJITA Izumi 愛媛県農林水産研究所, 農業研究部, 研究員 (50558202)
• Project Period (FY): 2013-04-01 – 2016-03-31
• Keywords: 高電圧パルスパワー / プラズマ / 農業応用 / 発芽促進 / 農作物種子 / 光形態形成

Outline of Final Research Achievements

Experimental studies on photosensitivity of crop seeds subjected to non-equilibrium plasma produced by polarity reversed voltage pulses in ns range are carried out. Dielectric barrier discharge repeatedly propagates along the surface of the seeds on a glass barrier between plane-plane electrodes. Regardless of the discharge treatment time, most part of the seeds starts to root within 4 days and then germinate within 1 week in dark-room condition. On the other hand, the seeds without discharge treatment have a lower ability for germination in irradiating condition because tomato is a heliophilous plant. However, the germination ratio of the seeds in irradiating condition increases with increasing the discharge treatment time. This interesting phenomenon implies that loss of sciophilous characteristics due to molecular structure change of photoreceptor in the seed coat is caused by the repetitive barrier discharges.

Free Research Field

高電圧パルスパワー工学