Cytological Effects of Medicinal Plants in Qatar

I. Mitotic effect of water extract of Pulicaria crispa on Allium cepa

Abstract

The cytological effects of water extract from Pulicaria cispa were studied with reference to Allium cepa.
Two types of treatments were carried out, direct and recovery treatments. The concentrations used were 3, 5, 7, and 10%.
The extract affected the mitotic index and the percentage of the mitotic phases in the treated roots. The percentage of anomalies increase with increase of concentration and duration of treatment. The occurred abnormalities were, spindle disturbance, stickiness and sticky bridges, and laggards.