THE EFFECT OF GAMMA IRRADIATION ON ONION GROWTH AND NUCLEIC ACID CONTENT (in Russian)
Gribovskii onion bulbs (a turnip-like onion) were given a dose of 10, 100, and 300 kr in November, while the bulbs were still in a state of rest. The irradiated bulbs were stored at a temperature of 2 deg C and a relative humidity of 85 to 90%, and were planted in February and March of the next year (1982). Samples of various parts of the plant were taken for morphological and biochemical study. Microscopic analysis of the leaves and onion bulb given a dose of 100 kr showed the absence of normal dividing cells. The increase in the size of the leaves and bulb were due to cell expansion rather than to cell division. A dose of 3 to 10 kr retarded the synthesis of nucleic acids in the irradiated plant during storage. After sprouting, the nucleic acid content in the root system increased by a factor of 2 to 3 in the plant irradiated up to a dose of 100 kr and in the control. The total nucleic acid content in the onion bulb given a dose of 500 kr decreased, and this decrease could be correlated with the almost complete suppression of growth at this dose. The results showed that the onion is more resistant to irradiation than is the potato tuber. (TTT)
- Research Organization:
- Bakh Inst. of Biochemistry, Academy of Sciences, USSR
- NSA Number:
- NSA-17-033667
- OSTI ID:
- 4663770
- Journal Information:
- Doklady Akademii Nauk SSSR (U.S.S.R.) English translation currently published in a number of subject-oriented journals, Journal Name: Doklady Akademii Nauk SSSR (U.S.S.R.) English translation currently published in a number of subject-oriented journals Vol. Vol: 150; ISSN DANKA
- Country of Publication:
- Country unknown/Code not available
- Language:
- Russian
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