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Research on the growth intensity of the Zea mays L. plantlets aerial parts under cadmium treatment

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Author(s): Lucia MIHALESCU | Oana-Elena MARE-ROŞCA | Monica MARIAN | Cristian-Felix BLIDAR

Journal: Analele Universitatii din Oradea, Fascicula Biologie
ISSN 1224-5119

Volume: TOM XVII;
Issue: 1;
Start page: 147;
Date: 2010;
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Keywords: caryopsis | cadmium chloride | aerial part | variant | plantlet

ABSTRACT
In order to test the effect of cadmium on the growth of the plantlets aerial parts, this element was administered as water solutions of cadmium chloride (CdCl2) of different concentrations. The measuring of the length of the Zea mays plantlets aerial parts evidenced the existence of some differences regarding the value of this parameter. Analyzing the obtained data, we observe that the inhibiting action of cadmium upon the growth of the Zea mays plantlets aerial parts was directly proportional with the increase of the concentration of the applied heavy metal. The lesser values were evidenced at the variants which were treated with the higher concentrations of cadmium chloride (100 mg/l and 200 mg/l). The plants from the variant with 1 mg/l CdCl2 resisted at cadmium toxicity, the inhibition being insignificant. Morphologically, it was observed that as the administered cadmium concentration was increased, the most evidently the symptoms of chlorosis and dryness of the vegetative tops of the Zea mays plantlets appeared.
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