Effects of acute ionizing radiation on the xylem fibers of Quercus alba and Liquidambar styraciflua*
Review articleOpen access

AbstractA quantitative histological examination was conducted of selected cambial derivatives in the stems of two angiospermous species (Liquidambar styraciflua and Quercus alba) which grew in an area surrounding an air-shielded reactor. During a two-year period absorbed doses ranged between background and 35,000 rads for Q. alba and were background and 14,900 rads for L. styraciflua.Radiation greater than 3500 rads had marked effect on the morphology of cell increments during the time radiation occurred. The libriform fibers produced during irradiation in Q. alba were shorter and possessed thinner walls than the controls. Similar, but less distinct, effects were observed on fiber tracheids in L. styraciflua following dosages of 14,900 rads.Observations made in one year subsequent to irradiation indicated that the production of fibers of normal size occurred in trees which returned to an apparently normal gross morphological condition.

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