A Study of Azo Dye Reactive Red 120 Induced Genotoxicity on Allium cepa L.

Joydeep Dutta and Aijaz Ahmed

Abstract

The effects of Reactive Red on the chromosome of Allium cepa are reported. A significant reduction in mitotic index was observed as the dose and time interval is increased as compared to control. The dye also induces different types of aberrations viz: anaphase with bridge, multipolar anaphase, metaphase with loss and stickiness. The dye at the highest concentration (1000 μg/L) induces highest number of chromosomal aberrations at different time exposure. Thus the results depict that under the dye at the evaluated doses and exposure times were mito-depressive and clastogenic. Cytotoxicity studies should be conducted for further evaluation of the effect of the dye in a natural system.

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