Abstract
Barley, Hordeum vulgare (2n=14) has been used by many cytologists, to determine cytotoxicity of environmental pollutants like heavymetals, industrial effluents, agricultural chemicals etc. In the present study, Arsenic(in the form of arsenic trioxide of concentrations100,250, 500,750and1000ppb), cytotoxicity was analyzed on Barley root tip mitosis, to understand its toxic effects on cells and chromosomes of a plant-basedsystem. The results show that Arsenic can induce various Mito depressive and clastogenic chromosomal aberrations like chromosomal breakages, disturbed spindle organization and other cellular metabolic defects. Generally the cytological anomalies were found to be dose-dependent.
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