報告書番号

U94046

タイトル（和文）

植物種子への低線量放射線照射が発芽に及ぼす効果ＩＩ，照射線量，品種，貯蔵温度，貯蔵期間との関係

タイトル（英文）

EFFECT OF LOW RADIATION DOSES GERMINATION OFPLANT SEEDS,II.RADIATION DOSES,PLANT VARIETY,STORAGE TEMPERATURE AND STORAGE PERIOD,

概要 （図表や脚注は「報告書全文」に掲載しております）

数種の野菜種子へ低線量コバルト６０ガンマー線（５ｋＲ／ｈ）を照射し，照射線量，品種，貯蔵温度，貯蔵期間が種子の発芽に及ぼす効果について検討を行い，次の結果を得た。１．ホウレンソウ３品種の種子に０～１００Ｇｙ照射した結果，種子が浸漬され，発芽が抑制される条件下では，２５～１００Ｇｙ照射により，非照射種子に比べ高い発芽率が認められた。２．ホウレンソウ３品種の種子の発芽に及ぼす照射後の貯蔵温度と貯蔵期間について検討を行い，貯蔵前の種子照射により，長期間貯蔵した場合にも非照射種子に比べ，高い発芽能力が維持された。３．ホウレンソウ１３品種の種子の発芽に及ぼす照射前の貯蔵温度と貯蔵期間について検討を行い，長時間貯蔵等により発芽能力が低下した種子への照射による発芽能力の回復効果は認められなかった。

概要 （英文）

THIS STUDY WAS CARRIED OUT TO EXAMINE THE EFFECT OF LOW RADIATION DOSES ON GERMINATION OF PLANT SEEDS. THE RESULTS WERE AS FOLLOWS: 1.SEEDS OF VARIETIES OF SPINACH WERE IRRADIATED BY GAMMA RADIATION RANGING FROM O TO 100 GY. WHEN THE GERMINATION BED WAS VERY MOIST,THE GERMINATION PERCENTAGES OF SEEDS IRRADIATED FROM 25 TO 100 GY,WERE HIGHER THAN THOSE OF NON-IRRADIATED SEEDS. 2.SEEDS OF THERE VARIETIES OF SPINACH WERE IRRADIATED BY GAMMA RADIATION RANGING FROM 0 TO 30GY,AFER IRRADIATION,THE SEEDS WERE STORED FOR 0,5,10,20 AND 26 MONTHSTHE STORAGE TEMPERATURES WERE 5DEGREE ,20DEGREE AND 35DEGREE GERMINATION TESTS WERE CARRIED OUT AFTER THE STORAGE PERIODS.THE GERMINATION PERCENTAGES OF IRRADIATED SEEDS WERE HIGHER THAN THOSE OF NONIRRADIATED SEEDS. 3.SEEDS OF VARIETIES OF SPINACH WERE STORED FOR 2,5 AND 10 MONTHS.THE STORAGE TEMPERATURES WERE 5 DEGREE,20DEGREE AND 35DEGREE AFTER STORAGE,THE SEEDS WERE IRRADIATED BY GAMMA RADIATION RANGING FROM 0 TO 30 GY,AND GERMINATION TESTS WERE CARRIED OUT THE LOW DOSES OF RADIATION HADNOEFFECT ON THE GERMINATION PERCENTAGES OF IRRADIATED SEEDS STORED FORLONG PERIODS.

報告者

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