The immediate effects of exposing oat seeds to high dosages of X-ray are generally twofold: (a) many of the seeds fail to germinate, and (b) the seedlings produced are stunted. It is generally accepted that these physiologic effects react the same as other environmental variation in biological materials. However, it is possible that even though the physiologic effects disappear in one generation that certain weaknesses may persist but remain hidden. Weakened linkages of some type within chromosomes could conceivably be a case in point. If this is the case, one might expect the effects to be cumulative with repeated x-ray treatment in successive generations, since the basic units affected are probably chromosomes and genes. The study reported herein was conducted to determine to what extent the X-ray damage to oat seeds, measured as germination percentage and seedling vigor, was cumulative with recurrent radiation in one, two, and three seed generations. The measures of seedling vigor were plant height and weight per 100 seedlings.
Proceedings of the Iowa Academy of Science
©1958 Iowa Academy of Science, Inc.
Abrams, R. and Frey, K. J.
"Effect of Recurrent X-Radiation on Germination and Seedling Vigor in Oats,"
Proceedings of the Iowa Academy of Science, 65(1), 174-183.
Available at: https://scholarworks.uni.edu/pias/vol65/iss1/23