Cytogenetic studies of food preservative in Allium cepa root meristem cells
2007
Palani Kumar, L., The Madura College, Madurai (India). Research Centre and Post Graduate Studies in Botany | Panneerselvam, N., The Madura College, Madurai (India). Research Centre and Post Graduate Studies in Botany
Cytogenetic effects of food preservative potassium metabisulphite have been tested on root tip cells of Allium cepa L. The root tips have been treated with a series of concentrations, ranging from 25 to 150 microg/ml for 1, 3, 5, 7 and 9 h. The results indicate that the food preservative has reduced mitotic division in Allium cepa compared with the respective control. The percentage of mitotic index has decreased with increasing dose and time. Chromosomal abnormalities increase with increasing concentrations of the test chemical and the longer period of treatment. We have found that chromatid break and multiple breaks increase with dosage.
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