Meiosis in broad beans raised in soil contaminated with strontium-90

Journal Article · Sun Jan 01 04:00:00 EST 1978 · Radiobiology (USSR) (Engl. Transl.); (United States)

OSTI ID:5577498

Zuev, N D

Seeds of Vicia faba were planted in soil which strontium-90 had been previously applied. The soil was contaminated with strontium-90 in the following experimental variants: (1) 1.2 mCi/m/sup 2/, (2) 6.0, (3) 12, (4) 60, (5) 250, and (6) 1250 mCi/m/sup 2/. Observations at the seedling stage revealed a lethal effect from using 1250 mCi/m/sup 2/ strontium 90. Data for the other experimental variants revealed that the incidence of chromosomal aberrations in meiosis was related to level of contamination of the soil. At the rate of 1, 2, and 6 mCi/m/sup 2/, the extent of chromosomal lesions in meiosis holds at the control level. With addition of 12, 60, and 250 mCi/m/sup 2/ strontium-90, there is a linear correlation between incidence of chromosomal aberrations and extent of contamination. The highest incidence of cells with chromosomal aberrations is observed in the first division, as compared to the second. The incidence of chromosomal aberrations in different phases of division was 2 to 2.5 times higher in the anaphase than the telophase. The incidence of chromosmal aberrations in the anaphase of the first division is 20 to 50% higher than in the second division. The data on the spectrum of chromosomal aberrations indicate that there is a higher incidence of chromatid aberrations than chromosomal. The higher incidence of chromosomal aberrations in the first meiosis, as compared to the second, and in anaphases, as compared to telophases, can be attributed to both reversible and irreversible damage to genetic material of maternal pollen cells. As a result of these processes, there is reduction in number of cells bearing damaged chromosomes in telophases of the first and second meiotic divisions. (ERB)

• OSTI ID: 5577498
• Journal Information: Radiobiology (USSR) (Engl. Transl.); (United States), Journal Name: Radiobiology (USSR) (Engl. Transl.); (United States) Vol. 18:2; ISSN RADBA
• Country of Publication: United States
• Language: English

Related Subjects

560163* -- Radionuclide Effects-Internal Source-- Plants-- (-1987)
63 RADIATION, THERMAL, AND OTHER ENVIRON. POLLUTANT EFFECTS ON LIVING ORGS. AND BIOL. MAT.
ALKALINE EARTH ISOTOPES
BENCH-SCALE EXPERIMENTS
BETA DECAY RADIOISOTOPES
BETA-MINUS DECAY RADIOISOTOPES
BIOLOGICAL EFFECTS
BIOLOGICAL RADIATION EFFECTS
CELL CYCLE
CELL DIVISION
CHROMOSOMAL ABERRATIONS
CONTAMINATION
CORRELATIONS
DATA
DATA FORMS
DOSE-RESPONSE RELATIONSHIPS
EVEN-EVEN NUCLEI
EXPERIMENTAL DATA
INFORMATION
INTERMEDIATE MASS NUCLEI
ISOLATED VALUES
ISOTOPES
LEGUMINOSAE
MEIOSIS
MUTATIONS
NUCLEI
NUMERICAL DATA
PLANTS
RADIATION EFFECTS
RADIOISOTOPES
RADIOSENSITIVITY
SEEDLINGS
SOILS
STRONTIUM 90
STRONTIUM ISOTOPES
VICIA
YEARS LIVING RADIOISOTOPES