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Cucumber and okra seeds were radiated by Co-60 gamma radiator for 50, 100, 150 and 200 Gy. Germination percentage and seedling growth were observed every day for 10 days. After 10 days of seedling growth, weight of fresh and dry seedling were measured. The result showed that the highest germination percentage of cucumber was 100% on the third day of 50 Gy gamma-radiated seeds. The highest germination percentage of okra was 100% on the fifth day of 50 Gy gamma-radiated seeds. The highest seedling lengths of cucumber and okra were 13.7 cm. and 9.4 cm. with 50 Gy and 200 Gy of gamma dose, respectively. Weight of fresh and dry seedings showed no trend corresponding to the seedling growth. This study shows that the low dose gamma radiation may enhance the germination rate and the seedling growth during the early seedling state of some vegetable seeds.

Low dose gamma radiation effects on seed germination and seedling growth of cucumber and okra