Physiological Studies on the Development of Protective Action in Plant Tissues Against Ionizing Radiation (Part I):Effects of Combination of Gamma Irradiation and the Treatments of Some Protective Substances on the Germination ofSeeds and Potato Tubers
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The experiment was conducted to determine the effects of combination of gamma irradiation and the treatments of some protective substances and plant growth substances. The protective substances are glutathione, cysteine, 5-hydroxytryptophane, seretonine, cysteamine, and sodium ascorbate. Plant growth substances are GA<SUB>3</SUB> and IAA. The inhibitory effects of gamma radiation on the germination of potato tubers, radish seeds, and tomato seeds were reduced with high concentration treatment of GA<SUB>3</SUB> (Table 2 and 4, Fig. 1, 3, 4, and 5). Sodium ascorbate treatment slightly reduced the inhibitory effects on the germination (Table 1). These results would explain a part of the decreasing cause of inhibitory effects of gamma radiation on the germination (or sprouting) of seeds (or storage organs) at certain stage of storage.
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