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Title: | Genetic effects observed in tetrads of Tradescantia induced by radon |
Authors: | Villalobos-Pietrini, R Flores-Marquez, AR Meneses, MA Tavera, L Gomez-Arroyo, S López, L Balcazar-Lara, M |
Issue Date: | 1999 |
Abstract: | Inflorescences of Tradescantia clone 4430 were exposed to different concentrations of radon (Rn) gas (0.85, 12.10, 36.50 and 98.16 kBq/m(3)) from plants placed in an acrylic chamber that received radon from a container with pitchblende (containing uranium mineral). The exposure time was 24 h, afterwards the plants were left for 6 h in water and constantly aerated. Positive control plants were irradiated with gamma rays (0.8 Gy) and negative control plants received ambient air only (the background measurement had a mean of 0.38 kBq/m(3)). Micronuclei (MCN) in the tetrads induced by a particles emitted from Rn were tabulated and a linear concentration response was obtained. The potency of radon to induce MCN from the slope of the regression line was 0.13 MCN/kBq/m(3) of alpha-radiation. Radon could reach the anthers by diffusion through the aerial spaces within the buds. (C) 1999 Elsevier Science B.V. All rights reserved. |
URI: | http://hdl.handle.net/11154/3312 |
ISSN: | 0027-5107 |
Appears in Collections: | Ciencias
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