Polarity effect on growth acceleration of arabidopsis thaliana by DC electric field

We have been studying the effect of dc electric field on plant growth. It is clearly indicated that the dc field increases the plant growth. In our recent study, the seeds of Arabidopsis thaliana (thale cress) were cultivated under 0.0 kV/m, 2.5 kV/m, 5.0 kV/m, 1.0 kV/m, and 15.0 kV/m. The results are briefly summarized as follows: (i) dc field increases seed germination rate. (ii) It is suggested that the optimum field strength for plant growth exists around 10.0 kV/m. The effect of dc field polarity on plant growth also should be studied. In this report, we examined the polarity effect on growth acceleration of Arabidopsis thaliana by dc electric field.