Sensitivity of Artemia Eggs to the γ-irradiation II. Effects of Water Content

概要

論文の詳細を見る
The radiosensitivity of living materials has been found to depend greatly on conditions during irradiation. In this paper, the influences of water content and temperature during irradiation on Arternia dry eggs were examined. Artemia eggs of various water content were irradiated with γ-rays, and then soaked in 2% NaCl solution at 27℃. The radiosensitivity of eggs on the basis of hatchability increased successively with an increase of water content within 5.8% to 54.0%, except that at 9.6% showed a temporary decrease. The eggs once moistened prior to irradiation were redesiccated to the initial level of water content. Their sensitivity was shown to be almost at the same level of the initial one. To test the influence of temperature, the eggs were infiltrated with moisture at 0℃ and 25℃, and then they were irradiated at low or high temperatures, respectively. There was no significant difference in sensitivity between eggs infiltrated at 0℃ and 25℃. However, the sensitivity of eggs, infiltrated at both temperatures, irradiated at high temperature was found much higher than those irradiated at low temperature. These findings have been discussed in relation to similar one in plant seeds.
日本放射線影響学会の論文