Effect of triazophos on mitotic activity and chromosomal behavior in root meristems of <i>Allium cepa</i> L.

Authors

  • Archana Pandey Genetics Unit, Central Department of Botany, Tribhuvan University, Kirtipur, Kathmandu
  • Shyam R Sakya Genetics Unit, Central Department of Botany, Tribhuvan University, Kirtipur, Kathmandu

DOI:

https://doi.org/10.3126/botor.v6i0.2903

Keywords:

chromosomal and cellular abnormalities, cytotoxic effect, mitotic index, phase indices

Abstract

Effect of triazophos (an organophosphorous insecticide) on mitotic activity and chromosomal behavior in the meristematic region of root tip cells of Allium cepa L. was assessed. The insecticide showed mitotic depression and positive chromo-toxic effects. Abnormalities, such as stickiness, plasmolysed cells, equatorial plate shifting, polar shifting, irregular chromosome arrangement, precocious arms formation, bridge formation, C-metaphase, fragmentation of chromosomes, unequal cytokinesis, diagonal cytokinesis, delayed cytokinesis and formation of binucleated cells, were recorded in the chemically pretreated root meristem.

Key-words: chromosomal and cellular abnormalities; cytotoxic effect; mitotic index; phase indices.

DOI: 10.3126/botor.v6i0.2903

Botanica Orientalis - Journal of Plant Science (2009) 6: 4-7

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Published

2010-03-15

How to Cite

Pandey, A., & Sakya, S. R. (2010). Effect of triazophos on mitotic activity and chromosomal behavior in root meristems of <i>Allium cepa</i> L. Botanica Orientalis: Journal of Plant Science, 6, 4–7. https://doi.org/10.3126/botor.v6i0.2903

Issue

Vol. 6 (2009)

Section

Research

License

© Central Department of Botany, Tribhuvan University, Botanica Orientalis