Treatment of Organophosphorus Insecticide Monocrotophos and Its Effect in Dividing Cells of Allium Cepa L.

Abstract

The cytological effects of organophosphorus insecticide“Monocrotophos” has been studied on root meristem of Allium cepaIL. The out come of study is shown that Monocrotophos inducedmitodepresive effect and chromotixic (cytological abnormalities). Theeffect included high lethality for cell division, c-metaphase,fragments, breaks, laggards, stickness and disturbed polarity. The main abnormalities were plasmolysed cells, polar shifting(diagonally arranged chromosome in anaphase and telophase), c-metaphase, stickey metaphase, precocious arms, larggard, bridge,breaks in chromosome arms, fragmentation of chromosomes, delayedcytokinesis, diagonal cytokinesis, unequal cytokinesis and bi and trinucleated in some cases.