The effect of lead on Allium cepa L.
The effect of lead on Allium cepa L. at concentrations of 0.1, 1.0, 10, 50, 100 and 200 ppm were studied. Analysis focused on root growth, frequency of mitosis in a meristematic zone, and chromosomal aberrations. It was observed that lead reduces root growth and the frequency of mitotic cells in meristematic zones, and increases the frequency of aberrant cells. The intensity of the effects is a function of lead concentration.
Hospital Regional Dr. Abel Ayerza, Marcos Juárez, Argentina.
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D000490:Allium / Q000166:cytology / Q000187:drug effects* / Q000235:genetics; D002869:Chromosome Aberrations; D004305:Dose-Response Relationship, Drug; D007854:Lead / Q000633:toxicity*; D008938:Mitosis / Q000187:drug effects; D009152:Mutagenicity Tests; D009566:Nitrates / Q000633:toxicity*
D009566:Nitrates; D007854:Lead; C017461:lead nitrate