Paper PS+SE-FrM5
Improving of Harvest Period and Crop Yield of Arabidopsis Thaliana L. using Nonthermal Atmospheric Air Plasma
Friday, October 23, 2015, 9:40 am, Room 210A
| Session: |
Atmospheric Pressure Plasma Processing II |
| Presenter: |
Kazunori Koga, Kyushu University, Japan |
| Authors: |
K. Koga, Kyushu University, Japan
T. Sarinont, Kyushu University, Japan
T. Amano, Kyushu University, Japan
H. Seo, Kyushu University, Japan
N. Itagaki, Kyushu University, Japan
M. Shiratani, Kyushu University, Japan
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| Correspondent: |
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Nonthermal atmospheric plasmas have been widely used for biomedical applications [1-3]. Growth enhancement of plants is one of the important applications of such plasmas. Here we have studied effects of atmospheric air plasma irradiation to seeds of Arabidopsis thaliana L. on the harvest period and crop yield. Experiments were carried out using a scalable DBD device [2, 3]. The device consisted of 20 electrodes of a stainless rod of 1 mm in outer diameter and 60 mm in length covered with a ceramic tube of 2 mm in outer diameter. The discharge voltage and current were 9.2 kV and 0.2 A. 20 seeds of Arabidopsis thaliana L. were set 3 mm below the electrodes. After 3 minutes plasma irradiation, they were grown on rockwool until the harvest stage. The harvest period is defined as time from the beginning of cultivation to the first seed production. To evaluate the growth enhancement ability of the plasma irradiation, the area of two primary leaves of eight plants, namely 16 leaves, was measured every three days. The whole experiment was repeated 3 times with similar results. Data were analyzed by two-way analysis of variance. The harvest period without and with plasma irradiation are 71.31±5.63 and 66.53±3.82 days. The seed weight without and with plasma irradiation are 0.0201±0.0024, 0.0225±0.0016 mg/seed. The leaf area after 28 days from the beginning of cultivation without and with plasma irradiation are 0.049±0.011 cm2 and 0.064±0.014 cm2. These measured values without and with plasma irradiation are statistically significance different at α= 0.05 (P< 0.05). Plasma irradiation brings about 7% shorter harvest period, 12% higher seed weights and 30% larger primary leaves, compared to those without plasma irradiation. Thus, plasma irradiation to seeds is a cost effective and environmental friendly method for improving of harvest period and crop yield of plants. The growth enhancement mechanism will be discussed in the presentation. [1] J. Raiser and M. Zenker, J. Phys. D, 39, 3520 (2006).
[2] T. Sarinont, et al., JPS Conf. Proc. 1, 015078 (2014).
[3] S. Kitazaki, et al., Curr. Appl. Phys., 14, S149 (2014).