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Science 19 March 1965:
Vol. 147. no. 3664, pp. 1449 - 1451
DOI: 10.1126/science.147.3664.1449
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Articles

Relative Radiosensitivities of Woody and Herbaceous Spermatophytes

Rhoda C. Sparrow 1 and Arnold H. Sparrow 1

1 Biology Department, Brookhaven National Laboratory, Upton, Long Island, New York

The sensitivities of several woody and herbaceous species to single acute exposures to cobalt-60 gamma rays have been determined. Within each group the sensitivity of each species is largely determined by its average interphase chromosome volume (interphase nuclear volume divided by chromosome number) of shoot apical meristem cells. On the basis of the calculated amounts of energy absorbed (in kiloelectron volts) per interphase chromosome at an exposure necessary to produce a given biological effect, woody species were approximately twice as sensitive as herbaceous species.


THIS ARTICLE HAS BEEN CITED BY OTHER ARTICLES:
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