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- W2030870051 abstract "Abstract Seeds of Triticum monococcum flavescens were soaked in 32 P and 131 I solutions for 2 days before sowing, to compare the radiation effects of beta-rays with those of gamma-rays. Radioactive solutions of pH 6–7 contained 0·05–0·8 mc/gr 32 P and 0·2–0·8 mc/g 131 I. For comparison, seeds soaked in water for 2 days were exposed to gamma-radiation with 60 Co at the dosages 2·5, 5, 10 and 20 kr. The growth of seedlings, height of mature plants, single-spike fertility, and chromosome aberrations of treated plants in X 1 and chlorophyll mutations in X 2 were compared for beta- and gamma-irradiation. The results of the first experiments in 1957/58 were generally confirmed by those obtained in 1958/59. The higher the dosage of beta- and gamma-rays, the more delayed were emergence and growth of seedlings and the lower were survival rate, height of mature plants, and fertility. The relation between the inhibition of seedling growth and dosage of beta- and gamma-radiations coincides roughly with that between the decrease of survival rate or fertility and dosage. There was no emergence of seedlings at 20 kr gamma-radiation and 0·8 mc/g 32 P beta-radiation. The effects of beta-radiation from 0·15–0·2 mc/g 32 P and 0·8 mc/g 131 I solutions correspond roughly to those of 2·5 kr gamma-radiation. As to chromosome aberrations and chlorophyll mutations, the effects of 2·5 kr gamma-radiation coincide roughly with those of 0·1 mc/g 32 P and 0·6–0·8 mc/g 131 I solution. If we assume that the effects of beta-radiation are confined only to the embryo, we find from calculation that the 0·2 mc/g 32 P solution equals about 2·4 krad. This will account for the present data." @default.
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- W2030870051 date "1961-01-01" @default.
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- W2030870051 title "Radiation genetics in wheat—VII. Comparison of radiation effects of beta- and gamma-rays on diploid wheat" @default.
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- W2030870051 doi "https://doi.org/10.1016/s0033-7560(61)80016-1" @default.
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