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Revista Chapingo. Serie ciencias forestales y del ambiente

versão impressa ISSN 0186-3231

Resumo

GARCIA-GALLEGOS, Elizabeth; HERNANDEZ-ACOSTA, Elizabeth; GARCIA-NIETO, Edelmira  e  ACEVEDO-SANDOVAL, Otilio A.. Lead content and translocation in oats ( Avena Sativa , L.) and broad bean ( Vicia faba , L.) in contaminated soil. Rev. Chapingo [online]. 2011, vol.17, n.1, pp. 19-29. ISSN 0186-3231.  http://dx.doi.org/10.5154/r.rchscfa.2010.02.002.

A greenhouse experiment was established to determine the concentration of lead (Pb) in soil, root and aerial part of broad bean and oats. The bioconcentration and translocation factors in the two species were calculated, and 50, 100 and 150 mg·Pb·kg-1 of soil, including a control, were tested. Plants were collected 60 days after sowing and plant height (PH), root volume (RV) and total dry biomass (TDB) were measured, as well as Pb content in soil, root and aerial part. The quantification of Pb was performed by atomic absorption spectrophotometry. The soil cultivated with broad bean presented 28.48 % PbEDTA. The PH, RV and TDB variables were not drastically affected by the Pb concentrations tested. The broad bean and oat plants absorbed a total of 55 mg·kg-1 and 45.3 mg·kg-1, respectively, which are considered toxic concentrations for cultivated plants. The results can serve as a base to expand knowledge of Pb content absorbed and translocated in broad bean and oat plants, as the ability to tolerate and absorb Pb is specific to the species, including the variety of plant.

Palavras-chave : Crops; soil; heavy metals; pollution.

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