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《High Voltage Engineering》 2013-01
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Biological Effects of Pulsed Electric Field Based on Potential Fluctuations in Maize Seedlings

XI Gang1,LIU Kai1,YANG Yunjing2,GAO Yu1(1.School of Science,Xi'an University of Technology,Xi'an 710048,China; 2.School of Science,Northwest Agriculture and Forestry University,Yangling 712100,China)  
In order to obtain remarkable electric field biological effect on crop seeds,the basic characteristics of natural potential fluctuations in maize seedlings were studied by analyzing the wavelet de-noising and power spectrum.The results showed that the power spectrum of natural potential fluctuations in maize seedlings was mainly distributed in 0-1 Hz with a gravity frequency of 0.2 Hz.Based on the potential fluctuation characteristics,extremely low frequency pulsed electric field of 100 kV/m and 0.2 Hz was used to treat germinating maize seeds.It was found that the seed germination process was significantly promoted: on the 5th day of germination,the fresh mass,shoot length and root length of germinating maize seed respectively increased by 17.55%,60.13% and 28.50% compared with those of the control group.Analysis results of ultraweak luminescence(UL) changes in the geminating seeds showed that the ultraweak luminescence was promoted by the pulsed electric field: the spontaneous luminescence and the integrated intensity of delayed luminescence of the germinating maize seed respectively increased by 68.84% and 33.93% compared with those of the control group on the 5th day of germination.The promotion implied that the 0.2 Hz extremely low frequency pulsed electric field accelerated the DNA synthesis reaction and cell metabolism of the germinating seeds.It is concluded that the coupled resonance between pulsed electric field and plant natural potential may be the cause of the extremely low frequency pulsed electric field's biological effects.
【Fund】: 国家自然科学基金(50977079;51277151)~~
【CateGory Index】: S513;Q947
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