Brazilian Archives of Biology and Technology | |
Correlation between heavy metal ions (copper, zinc, lead) concentrations and root length of Allium cepa L. in polluted river water | |
Soraya Moreno Palacio2  Fernando Rodolfo Espinoza-quiñones2  Raquel Manozzo Galante2  Dilcemara Cristina Zenatti2  Araceli Aparecida Seolatto2  Evandro Kleber Lorenz2  Carlos Eduardo Zacarkim2  Nickeli Rossi2  Márcia De Almeida Rizzutto1  Manfredo Harri Tabacniks1  | |
[1] ,Universidade Estadual do Oeste do Paraná Desenvolvimento de Processos Químicos Núcleo de BiotecnologiaToledo PR ,Brasil | |
关键词: Acute toxicity; bioassay; copper; zinc; lead; Allium cepa L; | |
DOI : 10.1590/S1516-89132005000400024 | |
来源: SciELO | |
【 摘 要 】
The present work was performed using the common onion (Allium cepa L.) as a bioindicator of toxicity of heavy metals in river water. The test waters were collected at two sampling sites: at the beginning and the end of the Toledo River. The bulbs of A. cepa L. were grown in test water with nine concentration levels of copper, zinc and lead from 0.1 to 50 ppm. In the laboratory, the influence of these test liquids on the root growth was examined during five days. For test liquids containing below 0.03-ppm dissolved Cu the root growth was reduced by 40% However, the same reduction occurred for 1-ppm dissolved Zn. For dissolved Pb, results reveal toxicity above 0.1 and 0.6 ppm at the beginning and the end of the Toledo river water, respectively.
【 授权许可】
CC BY-NC
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