Abstract
The cobalt-60 plant and seed irradiation facility at the Atomic Energy Commission Agricultural Research Laboratory of the University of Tennessee at Oak Ridge is described. The facility, constructed in 1956, provides a source of gamma rays for plant geneticists of the agricultural experiment stations in the southern part of the United States; exposure to reactor neutrons is obtained at the Oak Ridge National Laboratory. Over 500 plant and seed samples, representing about 120 plant species, have been exposed to radiation under this program. These samples have been submitted by more than 100 research scientists in twenty-two states and five countries. Results are summarized, based on sensitivity in the treated generation for about sixty species of plants. A summary of the observed genetic changes reported for about twenty species is included. A method is described whereby dose-response at maturity may be predicted from seedling performance, following seed irradiation.
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