摘要
The reaction ofAllium cepa root tips to the presence of potential toxic chemicals was used to evaluate the cyto/genotoxic effects of some water sources of Nen-Shkodra lowland agricultural area after massive 2010-2011 flooding. MRL （Mean root length）, MI （mitotic index）, PI （phase index） and CA （chromosome abnormalities） endpoints of onion roots, grown in four water samples, were measured and compared with tap water and Cu solution 0.5 mg/L （negative and positive controls）. Inhibition of root growth, cell division and induction of mitotic and chromosomal aberrations were detected. The most polluted water sample caused MRL inhibition of 36%, MI decrease of 38%, and a considerable increase in chromosomal aberrations （7.8%） compared to the negative control. Most frequent CA types were： bridges and fragments, stickiness and C-metaphase. The results indicated a slight toxic tendency of analyzed natural waters, serving as an alert of environmental impact that chemical pollution had after flooding.
