담배와 벼의 발아와 생장에 대한 Proton 빔조사의 영향

Abstract

Effects of proton beam irradiation on seed germination and growth pattern of tobacco(Nicotiana tabacumL. cv. BY-4; N. plumbaginifolia) and rice (OryasativaL.) plants wereestimated to develop the efficient conditions of irradiation. Seed germination rate wasdecreased by increasing the proton beam the current and the beam irradiation time in bothtobacco and rice seeds. The beam irradiation conditions showing 50% germination wereover 60 sec at 10 nA, approximately 5 sec at 100 nA and at 500 nA beam current in tobaccoseeds. And the conditions of 50% germination were 60 sec at 10 nA, and 100 nA and 30 secat 500nA in rice (cv. Dongjin 1) seeds. The growth of irradiated plants was decreased, butsignificant difference in morphological changes was not observed by the proton beamtreatment. The proton beam is able to use as a mutagen, but some of the factors includingbeam size and beam detector-system must be established for efficient usage of the beam.