THE CHANGE IN CARBOHYDRATE COMPOSITION WITHIN THE STORAGE ORGANS OF PLANTS UNDER THE EFFECT OF GAMMA IRRADIATION (in Russian)
Onion bulbs, garlic bulbs, and apples were subjected to gamma radiation, and the changes in carbohydrate content were determined at 5 days and 2 months after irradiation. No accumulation of sugars could be detected in the onion or garlic buibs up to a dose of 60,000 r. The content of monosaccharides decreased from 1.75% of the dry weight for the controls to 1.15% on the 5th day after irradiation of the onion bulbs with a dose of 30,000 r. No break-down of polysaccharides due to irradiation could be observed in the onion or garlic. No change in the monosaccharide content of irradiated onion bulbs could be detected by chromatographic analysis. The apples were irradiated with a dose of 40,000 r which caused ripening of the fruit, and with a dose of 200,000 to 400,000 r, which sterilized the fruit. On irradiating apples with a dose of 40,000 r, the monosaccharide content decreased, while the starch content increased. The sucrose content fell to zero at a dose of 400,000 r. After storage for a month, the monosaccharide content in the irradiated apples was less than that in the unirradiated apples. A chromatographic analysis showed that the content of galactic acid was increased in the irradiated apples due to the break-down of pectin-like materials. The maltose and lactose contents were much lower, while the contents of fructose and glucose were higher after irradiation than before irradiation of the apples. The data show that irradiation has an effect on the carbohydrate content of plants that varies from plant to plant. The reasons for the differences in stability of the various carbohydrate components in different plants are not known at present. (TTT)
- Research Organization:
- Bakh Inst. of Biochemistry, Academy of Sciences, USSR
- NSA Number:
- NSA-17-028732
- OSTI ID:
- 4702765
- Journal Information:
- Doklady Akademii Nauk SSSR (U.S.S.R.) English translation currently published in a number of subject-oriented journals, Vol. Vol: 149; Other Information: Orig. Receipt Date: 31-DEC-63
- Country of Publication:
- Country unknown/Code not available
- Language:
- Russian
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