EVALUATION OF MITODEPRESSIVE AND CYTOTOXIC POTENTIAL OF CHROMIUM ON ALLIUM SATIVUM ROOT MERISTEMSSomesh Yadav, Hitendra Kumar Singh and Meenu Saxena
The chromium was tested for its cytotoxic effects in form of aqueous solution of chromium sulphate on Allium sativum root tips. The solution showed mitodepressive effect, which increased as the concentration and the time of exposure were increased. The root tips of Allium sativum were treated with different concentrations like 100 ppm, 250 ppm, 500 ppm, 750 ppm and 1000 ppm for 2, 4 and 6 hours that caused various mitotic irregularities such as disturbed metaphase, scattered metaphase, stickiness of chromosomes and condensation of chromosomes at metaphase. The extrusion of chromosome and polarity abolition were observed at anaphase. No aberration was studied in prophase and telophase.
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