STUDIES ON THE UTILIZATION OF INDUCED MUTATION FOR SUGAR BEET BREEDING. I. SENSITIVITY OF SUGAR BEET TO $gamma$-RAYS (Co$sup 60$)
Dry dormant seeds of sugar beet were irradiated with Co/sup 60/ gamma rays of 40 to 1,000 kr in order to determine the radiosensitivity of this plant as a first step to the utilization of induced mutation for sugar beet breeding. It was found that even at 300 kr the seed showed a high germination rate, although seedlings irradiated with more than 70 kr gradually died in the process of development. From these results it was concluded that the gamma dosage appropriate for a mutation study in sugar beets is around 40 kr. In almost all varieties used the plants which developed from the irradiated seeds showed a slower growth than the controls. No difference was observed between diploid and polyploid radiosensitivity. (auth)
- Research Organization:
- Kyoto Univ.
- NSA Number:
- NSA-14-011456
- OSTI ID:
- 4199163
- Journal Information:
- Bull. Inst. Chem. Research, Kyoto Univ., Vol. Vol: 37; Other Information: Orig. Receipt Date: 31-DEC-60
- Country of Publication:
- Country unknown/Code not available
- Language:
- English
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