FORMATION IN GAMMA-IRRADIATED POTATO TUBERS OF SUBSTANCES THAT DEPRESS PLANT GROWTH AND DEVELOPMENT (in Russian)
Polyphenyloxidase activity in potato tubers measured 24 hr after irradiation increased two-fold as the irradiation dose was increased from 10 to 50 kr. Doses of 1 to 10 kr had very little, if any, effect. There was no induction period of about 1 hr after irradiation before the polyphenyloxidase activity appeared. The growth of seeds of two types of maize and of pumpkins, peas, and beans soaked in extracts of the tubers receiving 25- and 50-kr doses was inhibited, as shown by the length and the dry weight of the stems and roots of the seedlings, as well as by visual observation. To prevent gradual darkening of the extract (melanin formation) on standing, which took place more rapidly in the case of the irradiated tubers than in the unirradiated control extracts, the extract was prepared at dry ice temperature in a carbon dioxide atmosphere. The seeds were coated with vaseline during the soaking to prevent oxidation effects. These results are of interest in relation to irradiation of potatoes to prevent sprouting during storage. (TTT)
- Research Organization:
- Inst. of Biological Physics, Moscow
- NSA Number:
- NSA-17-031945
- OSTI ID:
- 4694238
- Journal Information:
- Radiobiologiya (U.S.S.R.) For English translation see Radiobiology (Engl. Transl.), Journal Name: Radiobiologiya (U.S.S.R.) For English translation see Radiobiology (Engl. Transl.) Vol. Vol: 3; ISSN RADOA
- Country of Publication:
- Country unknown/Code not available
- Language:
- Russian
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Related Subjects
ATMOSPHERE
BEANS
BIOCHEMISTRY
BIOLOGY AND MEDICINE
CARBON DIOXIDE
CEREALS
ENZYMES
FOOD
GAMMA RADIATION
GROWTH
HUMIDITY
ICE
IRRADIATION
LOW TEMPERATURE
MAIZE
MELANIN
PEAS
PHYSIOLOGY
PIGMENTS
POTATOES
PRESERVATION
PROTEINS
RADIATION DOSES
RADIATION EFFECTS
ROOTS
SEEDS
STORAGE
VARIATIONS
VEGETABLES
WEIGHT