量研学術機関リポジトリ「QST-Repository」は、国立研究開発法人 量子科学技術研究開発機構に所属する職員等が生み出した学術成果（学会誌発表論文、学会発表、研究開発報告書、特許等）を集積しインターネット上で広く公開するサービスです。 Welcome to QST-Repository where we accumulates and discloses the academic research results(Journal Publications, Conference presentation, Research and Development Report, Patent, etc.) of the members of National Institutes for Quantum Science and Technology.
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The development of new crop variety(ies) using cross breeding techniques is usually a time-consuming process. Recently, the new mutagenesis using heavy ion-beam irradiation methods have been developed and used to obtain novel mutants. However, the reliable method remains unestablished in most perennial horticultural crops like Japanese gentians and apple trees mainly due to the lack of information on beam irradiation. Here, we investigated the biological effects of several heavy ion-beam species at NIRS-HIMAC on the Japanese gentians and apple trees.
In vitro grown gentian breeding line, ‘Bzc-1’ and cultivar ‘Aokorin’ were irradiated with Ne and Ar ion-beams at doses ranging from 2 to 10 Gy. After transplanting single node segments, the lengths of the elongating axillary shoots were measured. Compared to non-irradiated control, the growth was hindered at the 4 Gy and was strongly repressed at more than 8 Gy of irradiation. Budwoods of apple cultivar ‘Ohyume’ exposed to Fe, Ar and Ne ion-beams were grafted to the stocks. The length of each newly extended branch was measured. The growth was strongly repressed by the 8 and 15 Gy of Fe and Ar ion-beam irradiation, respectively.
永年性植物に対する重イオンビーム照射が与える影響についての研究
