Skip to main content
OSTI.GOVU.S. Department of Energy Office of Scientific and Technical Information
U.S. Department of Energy
Office of Scientific and Technical Information
 

Mutation in low dose irradiation. Experiment using stamen hair of spinderwort (in Japanese)

Journal Article · · Hoshasen Seibutsu Kenkyu, v. 7, no. 3, pp. 167-177
OSTI ID:4347418
The genetic radiation effects of low-dose irradiation are discussed with reference to literature including the results of a series of experiments conducted by the author. Two experiments were performed to investigate the effects of /sup 60/Co gamma radiation on the genetic function of Tradescantia ohiengis Ku 7 in 1970 and 1971. In the 1970 experiment, the plants, which were placed at five different spots within the gamma field (37, 42, 51, 72, and 100 m each from the radiation source) and at a distance of 111.5 m from the radiation source and 8 m high, received radiation in the amount of 18.5 to 2.3 R/day (925 to 115 mR/hr) within the gamma field and 280 R/day (14 mR/hr) in the scattered field. In the 1971 experiment, 10.2 to 2.0 R/day (510 to 100 mR/hr) radiation was delivered at four spots within the gamma field 111.5 m distant and 8 m high. Observations on stamen hair were made in two terms; first on the 11th to 13th day after irradiation and, the second, 25th to 27th day in both experiments. The frequency of mutation was studied of 68,000 stamen hair and was induced per 1 R at the rate of 3.9 (or 3.4) x 10/sup -4/ pink mutant/ stamen hair ond 2.8 (or 2.6) x 10/sup -4/ pink mutant/stamen hair for those that received radiation before and during development. Thus the significant increase in the induction of mutation was observed within the area irradiated with substantially low dose, indicating considerably low mutation doubling dose. The question of permissible dose is also discussed. (JA)
Research Organization:
Kyoto Univ.
NSA Number:
NSA-29-021133
OSTI ID:
4347418
Journal Information:
Hoshasen Seibutsu Kenkyu, v. 7, no. 3, pp. 167-177, Journal Name: Hoshasen Seibutsu Kenkyu, v. 7, no. 3, pp. 167-177; ISSN HSKEA
Country of Publication:
Japan
Language:
Japanese

Similar Records

Effects of dose fractionation in Tradescantia stamen hairs after high and intermediate doses of X irradiation
Journal Article · Tue Jun 01 00:00:00 EDT 1982 · Radiat. Res.; (United States) · OSTI ID:6929034
Influence of experimental end points, dose, dose rate, neutron energy, nitrogen ions, hypoxia, chromosome volume and ploidy level on RBE in Tradescantia stamen hairs and pollen
Conference · Sun Dec 31 23:00:00 EST 1972 · OSTI ID:4406473
Absence of detectable fractionation effects in Tradescantia somatic mutations for an X-ray dose of 5 rad
Journal Article · Mon Dec 31 23:00:00 EST 1984 · Radiat. Res.; (United States) · OSTI ID:5973304

Related Subjects

*GENE MUTATIONS-- RADIOINDUCTION
*GENETIC RADIATION EFFECTS-- LOW DOSE IRRADIATION
*LOW DOSE IRRADIATION-- GENETIC RADIATION EFFECTS
*TRADESCANTIA-- GENETIC RADIATION EFFECTS
BIOLOGICAL REPAIR
CELL PROLIFERATION
CHROMATIDS
CHROMOSOMES
COBALT 60
COLOR
DOSE RATES
DOSE-RESPONSE RELATIONSHIPS
GAMMA RADIATION
GONADS
GROWTH
ICRP
MAXIMUM PERMISSIBLE DOSE
MAXIMUM PERMISSIBLE EXPOSURE
MUTANTS
MUTATION FREQUENCY
N48410* --Life Sciences--Radiation Effects on Plants--Basic Studies
PLANT CELLS
PLANTS
RADIATION DOSES
SOMATIC MUTATIONS
STAMEN