放射線照射したコムギにおけるムギ赤さび病感受性の変化 (第2報) : 照射部位による感受性の変化およびその線量依存

概要

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The stems and leaves of seedlings of Trilicum vulgare (Norin No.16) were irradiated at second leaf stage by X-rays at 5 kγ. The seedlings were inoculated 10 days after irradiation by spraying with an aqueous uredospore suspension of Puccinia triticina. The first leaves of the seedlings were removed 10 days after incculation and the size of uredosori was measured. The size of uredosori on plants whose whole bodies or stems were irradiated were about 1.7 times larger than on the control and the plants whose leaves only were irradiated. Seedlings of T. vugare (Norin No.50) at second leaf stage were irradiated by gamma-rays at 0.1, 0.25, 0.5, 1, 2.5,5 and 10 kγ. The seedlings were inoculated 6 days after irradiation by spraying with the uredospore suspension. Seedling length was measured 7 days after irradiation, and then the size of the sori wasu measured 12 days after inoculation. Inhibition of seedling lengths at dosages above 1 kγ. Also, the size of the sori increased with the increase of the dosage, but it did not further increase at dosages above 5 kγ.
日本植物病理学会の論文
1963-06-30