Cytological Effects of Pesticides

VIII. Effects of the carbamate pesticides “IPC”, “Rogor”, and “Duphar” on Vicia faba

Abstract

The effects of the pesticides: O, O-dimethyl-N-methyl-carbamidomethyl dithiophosphate “Rogor”, O-isopropyl-N-phenyl carbamate “IPC” and “Duphar”, (active ingredients 0.7% CIPC and 0.3% IPC), have been studied on: meiosis, pollen viability and yield of Vicia faba (var. Giza 1) plants for two (or three) successive generations. Two types of treatments were conducted, seed-soak and spraying plants at the seedling and flowering stages. The effects of the pesticides on mitosis for successive generations have been also investigated.
Spraying Vicia faba plants with sat. IPC solution at the flowering stage induced a relatively high percentage of abnormal PMCs. The most attractive effect of “Rogor”, “IPC” and “Duphar” was the induction of multipolar All and TII in addition to the other types of anomalies (stickiness, ana- and telophase bridges, and lagging of chromosomes), IPC induced tetraploid PMCs also. The transmission of chromosomal aberrations to the following generations was found to be very low.
The used pesticides have no harmful effect on the yield of Vicia faba plants even the treatments (seed-soak-treatments with 0.1% “Rogor” and 0.5 saturated “Duphar” solutions and spraying plants at the flowering stage with “Duphar” solution) which showed a significant inhibitory action on the yield in the 1st year did not show such effect in the 2nd generation. The 3rd generation was also normal in the case of plants sprayed at the seedling stage with “Rogor” and “IPC” solutions and showed significant increase in the yield in the 2nd generation.