Effects of Low-Level Chronic Radiation on Plant Nuclear Parameters as Related to Successional Patterns
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چکیده
Effects of Low-Level Chronic Radiation on Plant Nuclear Parameters as Related to Successional Patterns by Eric A. Rechel, Master of Science Utah State University, 1977 Major Professor: Dr. W. F. Campbell Department: Plant Science vi A major i ss ue facing nuclear power stations is how to effectively deal with radioactive waste. This waste, as it comes from a reactor, is emitting large quantities of ionizing radiation which is usually confined. Another form of radioactive wastes is the mill tailings from uranium processing plants. These tailings are sites characterized by low-level chronic radiation. The mill tailings of the Vitro Chemical Plant, in Salt Lake City, Utah, have been a point of radionuclide concentration and environmental contamination for 20 years. These tailings may adversely affect both surrounding ecosystems and any biological systems seeking to become established on the site. To test the potential hazard of this site to the succession of plant spec ies I examined the interphase chromosome volume and relative amounts of DNA per chromosome from plants growing on this site and those on a control site. These nuclear parameters indicate the relative radiosensitivity of a species and would demonstrate the total effectiveness of the low-level chronic radiation in
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