Cytogenetic effect of Systemic Fungicide Calixin on root meristem Cells of Allium cepa L.
Keywords:
Allium cepa, mitotic index, chromosomal aberrations, cytotoxic effect, fungicidesAbstract
The cytotoxic effect of Calixin, a fungicide was investigated in the mitotic cell division in root tip cells of Allium cepa L. The seeds of Allium cepa were treated with different concentrations (0.02%, 0.04%, 0.06% and 0.08%) of Calixin for 3, 6, 9, 12 h treatment periods. The obtained results indicate that Calixin had the ability to cause production of a large number of mitotic abnormalities. These abnormalities appeared in varying degrees depending on the dose. Various abnormalities on chromosomes like lagging early anaphase, chromosomal bridges, c-metaphase, sticky metaphase, multipolarity, fragment, vagrant etc were seen among mitotic divisions treated with Calixin.
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