Abstract
The mitotic effects of eight organophosphorus pesticides (anthio, diazinon, dursban, ekalux, methylparathion, phendal, rogor and sumithion) and MNNG (N-methyl-N'-nitro-N-nitrosoguanidine) were studied in barley (Hordeum vulgare L.). The chromo/cytotoxic effects included fragments, ring chromosomes and C-mitotic configurations at metaphase. Chromatin bridges, laggards and multipolar cells were observed at anaphase. The dose-response curves were found to be positively correlated in all the pesticides.
