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Report No.

Mutation induced by ionizing radiation in higher plant

Yoshihara, Ryohei; Hase, Yoshihiro; Takimoto, Koichi*; Narumi, Issei

We analyzed mutation induced by 220 MeV C$$^{5+}$$, $$gamma$$-rays and carbon ions near the Bragg peak in ${it Arabidopsis}$ seed. Mutations were detected by ${it rpsL}$ transgenic ${it Arabidopsis}$ mutation detection system. Although mutant frequency was increase with 220 MeV C$$^{5+}$$ or $$gamma$$-rays, that was background level in ${it Arabidopsis}$ irradiated carbon ion near the Bragg peak. The fluence of carbon ion near the Bragg peak was lower because it has higher cell killing effect. The fluence was too low to detect mutation by this method.



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