Correlation between heavy metal ions (copper, zinc, lead) concentrations and root length of Allium cepa L. in polluted river water

Brazilian Archives of Biology and Technology

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】

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