Perilla seeds were irradiated by 80 MeV/u 12C6+ ion beams and cultivated in experimental field.The physiological characteristics of the Perilla mutant were analyzed

so as to obtain experimental data for the breeding of Perilla.The results show that the contents of soluble sugar

proline(Pro) and flavonoids compounds from the perilla mutant leaves increased with the dose first

whereas at larger doses they decreased with increasing doses

but this trend was not clearly observed with the chlorophyll content.Also

the results show that with the increasing doses

the contents of catalase(CAT)

peroxidase(POD)

superoxide dismutase(SOD) activity and malondialdehyde(MDA) increased first and then decreased

but the proteins reduced first and increased afterward.These indicate that the heavy ion treatment can change some physiological and biochemical characteristics

being in favor of improving stress tolerance and accumulating nutrients of Perilla.