Lasers as Mutagens

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Lasers as Mutagens

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Title: Lasers as Mutagens
Author: Padma Nambisan
Abstract: The use of laser excitations at two wavelengths, 488 rim and 514 nm, produced by Argon ion laser in two plants species, Vicia faba (faba bean) and Allium cepa L., is described to compare the mutagenicity and the spectrum of chromosomal aberrations induced by laser at mitosis. The laser irradiation has been done at two power levels 200 and 400 mW with power densities 2.25 mW cm 2 and 4.49 mW cm 2 and different exposure times (10, 20, 30 and 40 min). The effect produced by laser is compared to those of UV rays and y- radiations. Laser as in the case of other physical and chenucal mutagens causes a dose-dependent decrease in mitotic chromosomal aberrations at these wavelengths. It is postulated that laser could be used as a new radiation system for the induction of mutations.
URI: http://dyuthi.cusat.ac.in/purl/748
Date: 1998-05-01


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