植物の成長に及ぼす直流電界の影響

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ᬀ‛ߩᚑ㐳ߦ෸߷ߔ⋥ᵹ㔚⇇ߩᓇ㗀

᧛ ᧄ ⵨ ੑ

㧖,1

㧘ᷡ ᳓ ᢎ ਯ

㧖

㧔2008 ᐕ 1 ᦬ 8 ᣣฃઃ; 2008 ᐕ 3 ᦬ 26 ᣣฃℂ㧕

Effect of D.C. Electric Field on Growth of a Plan

t

Yuji MURAMOTO,*

,1

_{and Noriyuki SHIMIZU*}

(Received January 8, 2008; Accepted March 26, 2008)

In this study we investigate the effect of D.C. electric field on the growth of a plant. The specimens are the white

radish sprouts. The statistical test shows that the D.C. electric field accelerates the rate of growth of the white radish

sprouts. It is also revealed that the effect of D.C. field on the growth is influence by the time when the D.C. electric

field is applied in a day.

1. ߪߓ߼ߦ ㄭᐕ㧘࿾⃿ߩ✚ੱญߪ60 ంੱࠍ⿥߃㧘2050 ᐕߦߪ⚂ 90 ం ੱߦ㆐ߔࠆߣ੍᷹ߐࠇߡ޿ࠆ㧚ߣߎࠈ߇⃻࿷ߩ㘩♳↢↥ᣇᴺ ߢߪㄘ⮎ߦࠃࠆኂ⯻ߩᷫዋ㧘ᣉ⢈ߦࠃࠆ࿯ფᡷ⦟ߥߤ߇࿑ࠄ ࠇߡ߽ߥ߅90 ంੱߩ㘩♳ࠍ⏕଻ߔࠆߎߣߪ࿎㔍ߢ޽ࠆ㧚ㄘ࿾ ߩ᜛ᄢ߿ੱญჇടߩᛥ೙߽ኈᤃߢߪߥ޿1)㧚⪺⠪ࠄߪ㧘෼ⓠ ㊂ߩჇട෸߮෼ⓠߦⷐߔࠆᤨ㑆ߩ⍴❗߇น⢻ߥ↢↥ᣇᴺࠍᬌ ⸛ߔࠆߚ߼ᬀ‛ߩᚑ㐳ߦਈ߃ࠆ㔚⇇ߩᓇ㗀ߦᵈ⋡ߒߚ㧚㔚᳇ ߣᬀ‛ߣߩ㑐ଥߪ㧘ޟⒷᆄޠߣ޿߁⸒⪲߇ޟ㔗߇⪭ߜߚߣߎࠈ ߩⒷߪࠃߊታࠆ㧚㔗ߪⒷߩታࠅࠍഥߌࠆⒷߩᆄߢ޽ࠆޠߣ⸒ ߁ߎߣ߆ࠄ↢߹ࠇߚߣ޿߁⺑߽޽ࠅ㧘ᤄ߆ࠄ૗ࠄ߆ߩ㑐ଥ߇ ޽ࠆߣ⸒ࠊࠇߡ߈ߚ2)㧚㔚᳇ߣᬀ‛ߦ㑐ߔࠆ⎇ⓥߪฎߊ߆ࠄ ⴕࠊࠇߡ߅ࠅ㧘㔚⇇߇ㄘ૞‛ߩᚑ㐳ࠍଦㅴߐߖࠆߣ޿߁ታ㛎 ႎ๔3-6)߇޽ࠆ㧚⊕᳁ࠄ4)ߪ㧘ᄖㇱ㕒㔚⇇ߣࠗࠝࡦ߇శ࡝ࡦ㉄ ൻ෻ᔕࠍᒝ߼㧘ATP ߩวᚑലᨐࠍ㜞߼㧘ㄘ↥‛ߩ↢㐳ㅦᐲࠍ ଦㅴߐߖࠆߣߒߡ޿ࠆ㧚߹ߚ㔚⇇࡮ⓨ᳇ࠗࠝࡦ࡮᡼㔚߇ᬀ‛ ᚑ㐳ߦ૗ࠄ߆ߩᓇ㗀5)ࠍߔࠆߎߣ߽␜ߐࠇߡ޿ࠆ㧚ߐࠄߦᬀ ‛ߩ⒳ሶߦ㔚⇇ಣℂࠍᣉߒ㧘↢⢒߳ߩᓇ㗀7)߽ᬌ⸛ߐࠇߡ޿ ࠆ㧚 ᧄႎ๔ߢߪࠞࠗࡢ࡟ᄢᩮࠍ↪޿㧘ᬀ‛ᚑ㐳ߦ෸߷ߔ㔚⇇ߩ ᓇ㗀ߦߟ޿ߡᬌ⸛ࠍⴕߞߚ㧚ߘߩ⚿ᨐ㧘ࠞࠗࡢ࡟ᄢᩮߩᚑ㐳 ߪ㧘㔚⇇ߩ᦭ήߦኻߒߡ⛔⸘⊛ᬌቯߦߡ⹏ଔߒߚߣߎࠈ᣿⏕ ߥᏅࠍ␜ߔߎߣ߇᣿ࠄ߆ߣߥߞߚ㧚߹ߚ㔚⇇ࠍශടߔࠆᤨ㑆 Ꮺߦࠃߞߡᬀ‛ᚑ㐳ߩᐲว޿߇ᄌൻߔࠆߎߣ߽␜ߐࠇߚ㧚 2. ታ㛎ᣇᴺ ࡊ࡜ࠬ࠴࠶ࠢࡃ࠶࠻㧔ᄖኸᴺ㧦30023045 mm㧕ߦ᳓㆏ ᳓ࠍ฽߹ߖߚ⣕⢽✎ࠍ߅߈㧘ߘࠇࠍ⧣ᐥߣߒߚ㧚ࠞࠗࡢ࡟ᄢ ᩮߩ⒳ሶ㧔ࢃ࠻࡯ࡎࠢ ࠝ࡯ࠬ࠻࡜࡝ࠕ↥㧕ࠍ㧘⣕⢽✎਄ߦ ❑ᮮ౒ߦ30 mm ߩ㑆㓒ߦߡ❑ 8 ୘㧘ᮮ 6 ೉ߩ⸘ 48 ୘㈩⟎ߒ ߚ㧚࿑1 ߦ⧣ᐥߦ㔚⇇ශടߔࠆⵝ⟎ߩ࿁〝࿑ࠍ␜ߔ㧚਄ㇱ㔚 ᭂࠍ㧗ߣߒ㧘ਅㇱ㔚ᭂࠍធ࿾ߣߒߚ㧚⧣ᐥߪ㧘⋥ᵹ㔚⇇ߦߐ ࠄߐࠇࠆࠃ߁ߦࠕ࡞ࡒ᧼㧔4003501 mm㧕ߩᐔⴕᐔ᧼㔚 ᭂౝߦ⸳⟎ߒߚ㧚⋥ᵹ㔚Ḯߪ㧘TAKASAGO ␠⵾ GP0110-5R ࠍ↪޿㧘ᛶ᛫R ߪ 200 kǡߣߒߚ㧚⋥ᵹ㔚⇇ߪ㧘1 kV/m ߣߒ㧘 1 ᣣ㧔24 ᤨ㑆㧕޽ߚࠅ 3 ᤨ㑆ශടߒߚ㧚㔚⇇ࠍශടߔࠆᤨ㑆 Ꮺߪ㧘9:30㨪12:30㧔ᦺ㧕෶ߪ 13:00㨪16:00㧔ᤤ㧕ߣߒߚ㧚ߐ ࠄߦ೎ߦ߽߁৻ߟ㔚⇇ࠍශടߒߥ޿⧣ᐥࠍ↪ᗧߒ㧘᷷ᐲ࡮Ḩ ᐲ࡮ᾖᐲ߇หߓⅣႺߦ߅޿ߚ㧚1 ࿁ߩታ㛎ߦ 1 ㅳ㑆㧔168 ᤨ㑆㧕 ࠍ߆ߌ㧘1 ㅳ㑆ᓟᚑ㐳ߒߚࠞࠗࡢ࡟ᄢᩮߩ㐳ߐ㧔ᩮ߆ࠄ⪲߹ߢ㧕 ࠍ⸘᷹ߒߚ㧚࿑2 ߦ৻ㅳ㑆ᓟߩࠞࠗࡢ࡟ᄢᩮߩ౮⌀ࠍ␜ߔ㧚 ᧄታ㛎ߦ߅޿ߡߪ㧘ታ㛎ታᣉᲤߦ๟࿐᧦ઙ㧔᷷ᐲ㧘Ḩᐲ㧘 ᾖᐲ╬㧕߇⧯ᐓ⇣ߥࠆ㧚࠹࡯࠲ߦ෸߷ߔ๟࿐᧦ઙߩዊߐߥᄌ േ߇ࠞࠗࡢ࡟ᄢᩮߩᚑ㐳ߦ෸߷ߔᓇ㗀ࠍ㒰ᄖߔࠆߚ߼㧘એਅ ߩࠃ߁ߦⷙᩰൻࠍᣉߒߚ㧚 Ԙห৻๟࿐᧦ઙਅߦߡ⋥ᵹ㔚⇇ࠍශടߒߚ⒳ߦࠃࠆᚑ㐳ߩ㐳 ߐ㧔aan㧕ߩ48 ୘ߩ⒳ሶߩ✚๺ߣශടߒߡ޿ߥ޿⒳㧔abn㧕ߦ ࠠ࡯ࡢ࡯࠼㧦ᬀ‛ᚑ㐳㧘⋥ᵹ㔚⇇㧘⛔⸘ᬌቯ㧘ࠞࠗࡢ࡟ᄢᩮ * ฬၔᄢቇℂᎿቇㇱ㔚᳇㔚ሶᎿቇ⑼㧔468-8502 ฬฎደᏒ ᄤ⊕඙Ⴎ㊍ญ1-501㧕

Department of Electrical & Electronic Engineering, Faculty of Science & Technology, Meijo University, 1-501, Shiogamaguchi, Tenpaku-ku, Nagoya 468-8502, Japan

1 _{[email protected]}

, 32, 3 (2008) 118 121 J. Inst. Electrostat. Jpn.

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ࠃࠆ߽ߩߩ 48 ୘ߩ✚๺ߣࠍวࠊߖߚ߽ߩߦኻߒߡ⒳ߩ✚ᢙ (N)96 ୘ߦࠃࠆᐔဋ X ࠍᑼ(1)ߦࠃࠅ᳞߼ࠆ㧚

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ԙᑼ(2)ߦࠃࠅฦ⹜ᢱߩ㐳ߐࠍԘߢ᳞߼ߚᐔဋ X ߢഀࠅ㧘ⷙᩰ ൻߒߚ㐳ߐ㧔Xn㧕ߣߔࠆ㧚

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3. ታ㛎⚿ᨐ߅ࠃ߮⠨ኤ ࿑3 ߦ╙ 1 ࿁ߩታ㛎ታᣉ⚿ᨐ㧔⒳ሶᢙว⸘ 96 ୘㧕ߩ଀ࠍ ␜ߔ㧚ὐ㧔ٟ㧘ع㧕ߪⷙᩰൻ㐳ߐߩᐔဋ୯㧘ࠛ࡜࡯ࡃ࡯ߪᮡ Ḱ஍Ꮕࠍ␜ߔ㧚⴫1 ߪ࿑ 3 ߦ߅ߌࠆ⊒⧘₸㧘ⷙᩰൻ㐳ߐߩᐔ ဋ୯ࠍ␜ߔ㧚㔚࿶ශടᤨ㑆Ꮺߪ㧘9:30㨪12:30㧔ᦺ㧕ߢ޽ࠆ㧚 ࿑3 ߅ࠃ߮⴫ 1 ߪ⋥ᵹ㔚⇇ࠍශടߒߚ⒳ߩᣇ߇ශടߒߥ߆ߞ ߚ߽ߩࠃࠅ߽⊒⧘₸߇㜞ߊ㧘ߐࠄߦⷙᩰൻ㐳ߐߩᐔဋ୯߇ᄢ ߈޿ߎߣࠍ␜ߒߡ޿ࠆ㧚 ᧄ⎇ⓥߢߪ࿑3 ߅ࠃ߮⴫ 1 ߣห᭽ߥታ㛎ࠍᢙᄙߊⴕ޿㧘࠺ ࡯࠲ߩ㓸Ⓧࠍⴕߞߡ޿ࠆ㧚ߘߩਛߦߪ⋧⇣߇ዊߐߊ㧘ᔅߕߒ ߽㔚⇇ߩᓇ㗀߇᣿⏕ߢߥ޿႐ว߽฽߹ࠇߡ޿ࠆ㧚ߘߎߢࠞࠗ ࡢ࡟ᄢᩮߩᚑ㐳ߦ෸߷ߔ⋥ᵹ㔚⇇ߩᓇ㗀ࠍࠃࠅ᣿⏕ߦᬌ⸛ߔ ࠆߚ߼ߦ⛔⸘⊛ᬌቯ8)ࠍⴕߞߚ㧚 ⛔⸘ᬌቯߦ߅޿ߡߪ㧘࠺࡯࠲ߦ㑐ߔࠆ઒⺑ߣఝ૏᳓Ḱࠍ⸳ ቯߔࠆ㧚઒⺑ߦߪᏫή઒⺑ߣኻ┙઒⺑߇޽ࠅ㧘Ꮻή઒⺑ߪุ ቯߒߚ޿๮㗴ࠍ㧘ኻ┙઒⺑ߪਥᒛߒߚ޿ߎߣࠍ⴫ߔ㧚ᧄႎ๔ ߩ႐วߪએਅߦ␜ߔ߽ߩߣߥࠆ㧚 Ꮻή઒⺑ XA 㧩XB ኻ┙઒⺑ XA 㧪XB ߎߎߢ㧘 XA㧦㔚⇇ශടߒߚ⒳ߩⷙᩰൻ㐳ߐߩᐔဋ XB㧦㔚⇇ශടߥߒ⒳ߩⷙᩰൻ㐳ߐߩᐔဋ ߢ޽ࠆ㧚 ᰴߦ᦭ᗧ᳓Ḱǩ㧔ା㗬ᐲࠍቯ߼ࠆᢙ୯㧕ߦኻߒߡߩ᫈ළၞ ߩ▸࿐ࠍ᳿ቯߔࠆ㧚ᧄႎ๔ߦ߅ߌࠆ࠺࡯࠲ߦ߅ߌࠆᐔဋߩᏅ ߦߟ޿ߡ ஥ᬌቯࠍⴕ߁ߦ޽ߚࠅ㧘t ಽᏓࠍ↪޿ࠆ㧚t ಽᏓߪ ⹜ᢱᢙߦࠃߞߡᄌൻߔࠆಽᏓߢ޽ࠅ㧘⹜ᢱᢙ߇пߩߣ߈ߦߪ ᱜⷙಽᏓߣߥࠆ㧚᫈ළၞߪ㧘t ಽᏓߩᦛ✢ߣ t ゲߦࠃߞߡ࿐߹ ࠇࠆ㕙Ⓧࠍ޽ࠆt ୯ࠍႺ⇇ߣߒߡ 2 ୘ߦಽഀߒߚߣ߈ߦ㧘ಽ ഀߒߚ㧗п஥ߩ㕙Ⓧ߇㧔ో૕ߩ㕙Ⓧ㧔㧩1㧕㧕㧔᦭ᗧ᳓Ḱ㧕 ߣߥࠆࠃ߁ߥ▸࿐ߩߎߣߢ޽ࠆ㧚੹࿁ߩታ㛎ߢ⠨߃ࠆߣ᫈ළ ၞߪ㧘ǩ㧩0.05 ߩߣ߈ t㧪1.64㧘ǩ㧩0.01 ߩߣ߈ t㧪2.33 ߣߥ ࿑1 㔚⇇ශടⵝ⟎ߩ࿁〝࿑

Fig.1 Schematic of the experimental set-up. R=200䌫㱅 E=1kV/m V V E=1kV/m 㪪㪼㪼㪻㪹㪼㪻 D C su pp ly 䋫䊷 R=200䌫㱅 E=1kV/m V V E=1kV/m 㪪㪼㪼㪻㪹㪼㪻 D C su pp ly 䋫䊷 ࿑2 ࠞࠗࡢ࡟ᄢᩮߩ㐳ߐ

Fig.2 Length of the white radish sprouts. 10mm

10mm

࿑3 ታ㛎ታᣉ⚿ᨐߩ଀

Fig.3 Example of the experimental results. 㪄㪇㪅㪌㪇㪇㪅㪌㪈㪈㪅㪌㪉㪉㪅㪌㪊 N or m al iz ed le ng th

No field Applied field 1kv/m Number of seeds(48) Number of seeds(48)

㪄㪇㪅㪌㪇㪇㪅㪌㪈㪈㪅㪌㪉㪉㪅㪌㪊 N or m al iz ed le ng th

⴫1 ࿑ 3 ߦ߅ߌࠆ⊒⧘₸㧘ⷙᩰൻ㐳ߐߩᐔဋ୯

Table 1 Average of germination rate and normalized length in Fig.3. No applied field Applied field 1 kv/m Average of germination rate (%) 0.52 0.79 Average of normalized length 0.55 1.45 119 (23)

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ࠆ㧚ߎߩߣ߈ߩା㗬ᐲߪ㧘1㧙ǩߢ␜ߐࠇࠆߩߢǩ㧩0.01 ߩߣ ߈ߪ0.99 ߣߥࠆ㧚੹࿁ᓧࠄࠇߚ࠺࡯࠲߆ࠄ⛔⸘㊂ߩታ⃻୯ t ࠍ⸘▚ߒߡ᫈ළၞߩ▸࿐ߦ౉ࠆ߆ࠍ⹏ଔߔࠆ㧔ᑼ(3)㧕㧚

(3)

㨄_A㧦㔚⇇ශടߒߚ⒳ߩⷙᩰൻ㐳ߐᐔဋ 㨄_B㧦㔚⇇ශടߥߒ⒳ߩⷙᩰൻ㐳ߐᐔဋ ǻ_A㧦㔚⇇ශടߒߚ⒳ߩⷙᩰൻ㐳ߐߩᮡḰ஍Ꮕ ǻ_B㧦㔚⇇ශടߥߒ⒳ߩⷙᩰൻ㐳ߐߩᮡḰ஍Ꮕ 㧺_A㧦㔚⇇ශടߒߚ⒳ᢙ 㧺_B㧦㔚⇇ශടߥߒ⒳ᢙ ࿑3 ߩ࠺࡯࠲ࠍ↪޿ߡᑼ(3)ߦᓥ޿⛔⸘㊂ߩታ⃻୯ t ࠍ▚಴ ߒߚߣߎࠈt㧩4.36 ߣߥߞߚ㧚ߎߩ୯ߪ t㧪2.39 ߩ᧦ઙࠍḩߚ ߔߩߢ㧘99%ࠃࠅ㜞޿ା㗬ᐲࠍ߽ߞߡޟ⋥ᵹ㔚⇇ࠍශടߒߚ ᣇ߇㐳ߐ߇ᄢ߈޿ޠߣ⸒߃ࠆ㧚 ࿑4 ߅ࠃ߮⴫2 ߦታ㛎ࠍ10 ࿁ታᣉߒߚߣ߈ߩࠞࠗࡢ࡟ᄢᩮ ߩᚑ㐳ߦ෸߷ߔ⋥ᵹ㔚⇇ߩᓇ㗀ࠍ␜ߔ㧚ߎߩ⚿ᨐߪ㧘㔚⇇ࠍ ශടߔࠆᤨ㑆Ꮺ߇9:30㨪12:30㧔ᦺ㧕ߣ 13:00㨪16:00㧔ᤤ㧕ߩ ੑߟߩ႐วߩว⸘ࠍ␜ߒߚ߽ߩߢ޽ࠅ㧘వߦ଀␜ߒߚ࿑3 ߅ ࠃ߮⴫1 ߩ࠺࡯࠲߽฽ࠎߛ߽ߩߢ޽ࠆ㧚10 ࿁ߩታ㛎ታᣉߦ߅ ޿ߡߪ㧘ߘࠇߙࠇ๟࿐ⅣႺߩ᧦ઙ߇ዋߒߕߟ⇣ߥࠆ߇㧘ోߡ ߩ࠺࡯࠲ࠍⷙᩰൻߒߡട߃ߚ߽ߩࠍ␜ߒߡ޿ࠆ㧚⴫2 ࠃࠅ⊒ ⧘₸㧘ⷙᩰൻ㐳ߐߩᐔဋ߇ߣ߽ߦ㔚⇇ࠍශടߒߚᣇ߇ᄢ߈޿ ୯ࠍ␜ߒߡ޿ࠆ㧚࿑4 ࠃࠅᑼ(3)ࠍ↪޿ߡ⛔⸘㊂ߩታ⃻୯ t ࠍ ▚಴ߒߚߣߎࠈt㧩6.32 ߣ▚಴ߐࠇ㧘t㧪2.33 ߩ᧦ઙࠍḩߚߔ ߎߣߣߥߞߚ㧚ࠃߞߡା㗬ᐲ99%એ਄ߢ⋥ᵹ㔚⇇ߦࠃࠅࠞࠗ ࡢ࡟ᄢᩮߩᚑ㐳߇ଦㅴߐࠇࠆߣ⸒߃ࠆ㧚 ᰴߦශടᤨ㑆Ꮺߩലᨐࠍ⷗ࠆߚ߼ߦ㧘ੑߟߩᤨ㑆Ꮺߦಽߌ ߚ႐วߩᬌ⸛ࠍⴕߞߚ㧚࿑4 ߅ࠃ߮⴫ 2 ߩ⚿ᨐߩਛ߆ࠄ㧘ᦺ (9:30㨪12:30)ߦ㔚⇇ࠍශടߒߚ⚿ᨐߩߺࠍಽ㔌ߒߡ߹ߣ߼ߚ ߽ߩ߇࿑5 ߅ࠃ߮⴫ 3 ߢ޽ࠆޕ࿑ 4 ߅ࠃ߮⴫ 2 ߩ⚿ᨐߩਛ߆ ࠄ㧘ᤤ(13:00㨪16:00)ߦ㔚⇇ࠍශടߒߚ⚿ᨐߩߺࠍಽ㔌ߒߡ߹ ߣ߼ߚ߽ߩ߇࿑6 ߅ࠃ߮⴫ 4 ߢ޽ࠆޕ࿑ 5 ߣ࿑ 6㧘⴫ 3 ߣ⴫ 4 ࠍᲧセߔࠆߣᦺߩᤨ㑆Ꮺߦ㔚⇇ࠍශടߒߚ႐วߦᲧߴߡᤤߩ ߽ߩߩᣇ߇ⷙᩰൻ㐳ߐߩᐔဋߪࠃࠅᄢ߈ߊᄌൻߒߡ޿ࠆ㧚⊒ ⧘₸ߪᦺߦශടߒߚᣇ߇ᤤߩ߽ߩࠃࠅ߽ᄢ߈ߊᄌൻߒߡ޿ࠆ㧚 ᦺߦශടߒߚ႐ว㧘⛔⸘㊂ߩታ⃻୯t ߪ t㧩2.36 ߢ޽ࠅ㧘ᤤߩ ႐วߪ㧘t㧩6.37 ߣߥߞߚ㧚෺ᣇߣ߽ߦ t㧪1.64 ߩ㗔ၞ㧔ା㗬 ᐲ95%એ਄㧕ߢ޽ࠆߩߢ㧘ߤߜࠄߩ႐ว߽⋥ᵹ㔚⇇ߩᓇ㗀߇ ޽ࠆߎߣ߇ࠊ߆ࠆ㧚⛔⸘㊂ߩታ⃻୯㨠ࠍ⷗ࠆߣ⛔⸘ቇ⊛ߦߪ㧘 ᤤߦ㔚⇇ࠍශടߒߚᣇ߇ᦺߦ㔚⇇ࠍශടߒߚ߽ߩࠃࠅ߽ࠞࠗ ࡢ࡟ᄢᩮߩᚑ㐳ߦ෸߷ߔ⋥ᵹ㔚⇇ߩᓇ㗀߇ࠃࠅ㗼⪺ߦ⴫ࠇࠆ ߎߣ߇␜ߐࠇߚ㧚ߚߛߒᦺߣᤤߩශടᤨ㑆Ꮺߦࠃࠆᬀ‛ᚑ㐳 ߩ⋧⇣ߩℂ↱ߦߟ޿ߡߪ㧘๟࿐ⅣႺࠍ฽߼ߡߐࠄߥࠆᬌ⸛߇ ᔅⷐߢ޽ࠆ㧚 B B A A B A

N

X

t

2 2

_V

V

࿑4 ࠞࠗࡢ࡟ᄢᩮߩᚑ㐳ߦ෸߷ߔ⋥ᵹ㔚⇇ߩᓇ㗀

Fig.4 Effect of D.C. electric field on length of white radish sprouts.

No field Applied field 1kv/m 㪇㪇㪅㪌㪈㪈㪅㪌㪉㪉㪅㪌 N or m al iz ed le ng th

Number of seeds(480) Number of seeds(480)

Table 2 Average of germination rate and normalized length in Fig.4.

No applied field Applied field 1 kv/m Average of germination rate (%) 0.82 0.92 Average of normalized length 0.86 1.20 ࿑5 ࠞࠗࡢ࡟ᄢᩮߩᚑ㐳ߦ෸߷ߔ⋥ᵹ㔚⇇ߩᓇ㗀㧔9:30㨪12:30 ߩᤨ㑆Ꮺߦ߅޿ߡ⋥ᵹ㔚⇇ࠍශട㧕

Fig.5 Effect of D.C. electric field on length of white radish sprouts. (The D.C. electric field is applied during time period (9:30㨪12:30)). 㪇㪇㪃㪌㪈㪈㪃㪌㪉㪉㪃㪌 N or m al iz ed le ng th

㪇㪇㪃㪌㪈㪈㪃㪌㪉㪉㪃㪌 N or m al iz ed le ng th

32 3 2008

120 (24)

࿑4 ࠞࠗࡢ࡟ᄢᩮߩᚑ㐳ߦ෸߷ߔ⋥ᵹ㔚⇇ߩᓇ㗀

ߚ႐วߩᬌ⸛ࠍⴕߞߚ㧚࿑_{4 ߅ࠃ߮⴫ 2 ߩ⚿ᨐߩਛ߆ࠄ㧘ᦺ} (9:30㨪12:30)ߦ㔚⇇ࠍශടߒߚ⚿ᨐߩߺࠍಽ㔌ߒߡ߹ߣ߼ߚ ߽ߩ߇࿑_{5 ߅ࠃ߮⴫ 3 ߢ޽ࠆޕ࿑ 4 ߅ࠃ߮⴫ 2 ߩ⚿ᨐߩਛ߆} ࠄ㧘ᤤ_{(13:00㨪16:00)ߦ㔚⇇ࠍශടߒߚ⚿ᨐߩߺࠍಽ㔌ߒߡ߹} ߣ߼ߚ߽ߩ߇࿑_{6 ߅ࠃ߮⴫ 4 ߢ޽ࠆޕ࿑ 5 ߣ࿑ 6㧘⴫ 3 ߣ⴫ 4} ࠍᲧセߔࠆߣᦺߩᤨ㑆Ꮺߦ㔚⇇ࠍශടߒߚ႐วߦᲧߴߡᤤߩ ߽ߩߩᣇ߇ⷙᩰൻ㐳ߐߩᐔဋߪࠃࠅᄢ߈ߊᄌൻߒߡ޿ࠆ㧚⊒ ⧘₸ߪᦺߦශടߒߚᣇ߇ᤤߩ߽ߩࠃࠅ߽ᄢ߈ߊᄌൻߒߡ޿ࠆ㧚 ᦺߦශടߒߚ႐ว㧘⛔⸘㊂ߩታ⃻୯_{t ߪ t㧩2.36 ߢ޽ࠅ㧘ᤤߩ} ႐วߪ㧘_{t㧩6.37 ߣߥߞߚ㧚෺ᣇߣ߽ߦ t㧪1.64 ߩ㗔ၞ㧔ା㗬} ᐲ_{95%એ਄㧕ߢ޽ࠆߩߢ㧘ߤߜࠄߩ႐ว߽⋥ᵹ㔚⇇ߩᓇ㗀߇} ޽ࠆߎߣ߇ࠊ߆ࠆ㧚⛔⸘㊂ߩታ⃻୯㨠ࠍ⷗ࠆߣ⛔⸘ቇ⊛ߦߪ㧘 ᤤߦ㔚⇇ࠍශടߒߚᣇ߇ᦺߦ㔚⇇ࠍශടߒߚ߽ߩࠃࠅ߽ࠞࠗ ࡢ࡟ᄢᩮߩᚑ㐳ߦ෸߷ߔ⋥ᵹ㔚⇇ߩᓇ㗀߇ࠃࠅ㗼⪺ߦ⴫ࠇࠆ ߎߣ߇␜ߐࠇߚ㧚ߚߛߒᦺߣᤤߩශടᤨ㑆Ꮺߦࠃࠆᬀ‛ᚑ㐳 ߩ⋧⇣ߩℂ↱ߦߟ޿ߡߪ㧘๟࿐ⅣႺࠍ฽߼ߡߐࠄߥࠆᬌ⸛߇ ᔅⷐߢ޽ࠆ㧚 B B A A B A

N

X

t

2 2

_V

V

࿑_{4 ࠞࠗࡢ࡟ᄢᩮߩᚑ㐳ߦ෸߷ߔ⋥ᵹ㔚⇇ߩᓇ㗀}

No field Applied field 1kv/m

㪇㪇㪅㪌㪈㪈㪅㪌㪉㪉㪅㪌 N or m al iz ed le ng th

⴫_{2 ࿑ 4 ߦ߅ߌࠆ⊒⧘₸㧘ⷙᩰൻ㐳ߐߩᐔဋ୯}

No applied field Applied field 1 kv/m Average of germination rate (%) 0.82 0.92 Average of normalized length 0.86 1.20 ࿑_{5 ࠞࠗࡢ࡟ᄢᩮߩᚑ㐳ߦ෸߷ߔ⋥ᵹ㔚⇇ߩᓇ㗀} 㧔_{9:30㨪12:30 ߩᤨ㑆Ꮺߦ߅޿ߡ⋥ᵹ㔚⇇ࠍශട㧕}

Fig.5 Effect of D.C. electric field on length of white radish sprouts. (The D.C. electric field is applied during time period (9:30㨪12:30)). 㪇㪇㪃㪌㪈㪈㪃㪌㪉㪉㪃㪌 N or m al iz ed le ng th

㪇㪇㪃㪌㪈㪈㪃㪌㪉㪉㪃㪌 N or m al iz ed le ng th

(4)

ᬀ‛ߩᚑ㐳ߦ෸߷ߔ⋥ᵹ㔚⇇ߩᓇ㗀㧔᧛ᧄ࡮ᷡ᳓㧕 121 ᄖㇱ㔚⇇ߦࠃߞߡᬀ‛ਛߩATP㧔ࠕ࠺ࡁࠪࡦΥ࡝ࡦ㉄㧕ߩ วᚑ߇⪺ߒߊᵴᕈൻߒ㧘᦭ᯏ‛߿㋶‛ߩઍ⻢߇Ⴧᒝߐࠇࠆ 4) ߎߣߦࠃߞߡᚑ㐳߇ଦㅴߐࠇࠆߎߣߥߤ߇␜ໂߐࠇߡ޿ࠆ߇㧘 ᧄ⎇ⓥߦ߅޿ߡ߽ߐࠄߦᬌ⸛ࠍㅴ߼ࠆᔅⷐ߇޽ࠆ㧚 4. ߹ߣ߼ ᧄ⎇ⓥߢߪ㧘ࠞࠗࡢ࡟ᄢᩮߩᚑ㐳ߦ෸߷ߔ⋥ᵹ㔚⇇ߩᓇ㗀 ߦߟ޿ߡᬌ⸛ࠍⴕߞߚ㧚ߘߎߢᓧࠄࠇߚ⚿ᨐࠍએਅߦ␜ߔ㧚 (1) ⋥ᵹ㔚⇇߇ࠞࠗࡢ࡟ᄢᩮߩᚑ㐳ߦᓇ㗀ߒ㧘⛔⸘⊛ᬌቯߩ ⚿ᨐ߆ࠄ߽ᚑ㐳ࠍଦㅴߐߖࠆലᨐ߇␜ߐࠇߚ㧚 (2) ⋥ᵹ㔚⇇ࠍශടߒߡ޿ࠆᤨ㑆Ꮺߦࠃߞߡᚑ㐳ߩᐲว޿ ߇⇣ߥࠆߎߣ߽ࠊ߆ߞߚ㧚 ᧄ⎇ⓥߩታᣉߦදജߒߡ㗂޿ߚ⍹↰ᢕ჻᳁㧔ᐔᚑ16 ᐕᐲᧄ ቇත⎇↢㧕ߦᗵ⻢⥌ߒ߹ߔ. ෳ⠨ᢥ₂ 1) ㄘᨋ᳓↥⋭㧦ޟᐔᚑ 15 ᐕᐲߩ㘩ᢱ⥄⛎₸ޠhttp://www.kan bou.maff.go.jp/www/jikyu/jikyu01.htm 2) ⮮᧛ືᄦ㧦㔚᳇⊒⷗‛⺆㧘p35㧘⻠⺣␠㧘(2002) 3) ằỈరᴦ㧘ᩊ↰᩵ᄥ㧦㔚᳇ቇળ㔀⹹㧘47 (1927) 1259 4) ⊕Ꮧႌ㧘㒸૞␞㧘㚍ᢥ↰㧘ᆗళੳ㧘ೊᘕ⸒㧘᧘ᚑ⢒㧘᧘ ᥙ⃍㧦㕒㔚᳇ቇળ⹹8 (1984) 339 5) ㊀శม㧦ࡊ࡜࠭ࡑ࡮ᩭⲢวቇળ⹹ 75 (1999) 659 6) ᧛ᧄ⵨ੑ㧘⍹↰ᢕ჻㧘ศ↰೑ᄦ㧘ᷡ᳓ᢎਯ㧦㔚ᖱㅢᛛ⎇ ႎ105 OME2005-102 (2006) 7 7) ᧻የ᣽᮸㧘ဈ↰ᥓሶ㧦↢‛ⅣႺ⺞ᢛ 32 (1994) 107 8) ↰ઍཅብ㧘⣁ᧄ๺᣽㧘ᄢፒ⚔৻㧦ᔕ↪ᢙቇⷐ⺰ࠪ࡝࡯࠭ 2 ⏕₸ߣ⛔⸘ⷐ⺰㧘p.120㧘᫪ർ಴ (1979) ࿑6 ࠞࠗࡢ࡟ᄢᩮߩᚑ㐳ߦ෸߷ߔ⋥ᵹ㔚⇇ߩᓇ㗀㧔13:00㨪16:00ߩᤨ㑆Ꮺߦ߅޿ߡ⋥ᵹ㔚⇇ࠍශട㧕

Fig.6 Effect of D.C. electric field on length of white radish sprouts. (The D.C. electric field is applied during time period (13:00㨪16:00)). 㪇㪇㪃㪌㪈㪈㪃㪌㪉㪉㪃㪌

N or m al iz ed le ng th

㪇㪇㪃㪌㪈㪈㪃㪌㪉㪉㪃㪌㪇㪇㪃㪌㪈㪈㪃㪌㪉㪉㪃㪌

N or m al iz ed le ng th

No applied field Applied field 1 kv/m Average of germination rate (%) 0.85 0.92 Average of normalized length 0.82 1.30 ⴫3 ࿑ 5 ߦ߅ߌࠆ⊒⧘₸㧘ⷙᩰൻ㐳ߐߩᐔဋ୯

No applied field Applied field 1 kv/m Average of germination rate (%) 0.77 0.92 Average of normalized length 0.92 1.08 121 (25)

植物の成長に及ぼす直流電界の影響

ᬀ‛ߩᚑ㐳ߦ෸߷ߔ⋥ᵹ㔚⇇ߩᓇ㗀

᧛ ᧄ ⵨ ੑ

㧘ᷡ ᳓ ᢎ ਯ

Effect of D.C. Electric Field on Growth of a Plan

t

Yuji MURAMOTO,*

and Noriyuki SHIMIZU*

In this study we investigate the effect of D.C. electric field on the growth of a plant. The specimens are the white

radish sprouts. The statistical test shows that the D.C. electric field accelerates the rate of growth of the white radish

sprouts. It is also revealed that the effect of D.C. field on the growth is influence by the time when the D.C. electric

field is applied in a day.

N

a

a

X

¦



¦

(1)

X

a

x

(2)

(3)

N

N

X

X

t

V

V





N

N

X

X

t

V

V





_{and Noriyuki SHIMIZU*}

_V

_V