Data/hora: 17/06/2024 02:14:39

Biblioteca(s): | Embrapa Mandioca e Fruticultura.
Data corrente: | 18/02/2008
Data da última atualização: | 17/03/2008
Autoria: | CUNHA, K. P. V.; NASCIMENTO, C. W. A.; PIMENTEL, R. M. M.; ACCIOLY, A. M. A.; SILVA, A. J.
Afiliação: | K. P. V. Cunha, Universidade Federal Rural de Pernambuco; C. W. A. Nascimento, Universidade Federal Rural de Pernambuco; R. M. M. Pimentel, Universidade Federal Rural de Pernambuco; Adriana Maria de Aguiar Accioly, CNPMF; A. J. Silva, Universidade Federal Rural de Pernambuco.
Título: | Biogeochemistry of trace elements: environmental protection, remediation and human health.
Ano de publicação: | 2007
Fonte/Imprenta: | In: ZHU, Y.; LEPP, N.; NAIDU, R. (Ed.). Biogeochemistry of trace elements: environmental protection, remediation and human health. Bei Jing: Tsinghua University Press, 2007. p. 160-161.
ISBN: | 978-7-302-15627-7
Idioma: | Inglês
Conteúdo: | Determination of toxic concentration of metals in soils is needed to support legislations on soil pollution by trace metals. High concentrations of metals in plants are generally associated with visual symptoms of toxicity and anatomical alterations at cellular level. The work was carried out to determine the critical toxic concentration of cadmium (Cd) in an Ultisol cultivated with com (Zea mays L.) and its relation to toxicity symptoms. Plants were grown for 30 days in pots containing five rates of Cd (0, 1, 3, 5, 10 and 20 mg * kg -¹) added as CdCl2 solution. The critical concentration of Cd in soil, which caused a 30% reduction in dry matter production, was 10 mg * kg -¹. Chlorotic and coiled leaves were the most common visual symptoms of Cd toxicity. In creased lignification of the cell wall in several cell tissues was also observed.
Palavras-Chave: | Cadmium tolerance; Metal toxicity; Trace element.
Categoria do assunto: | --
Registro original: | Embrapa Mandioca e Fruticultura (CNPMF)
Exemplares: | CNPMF - (24317-1) - UPC - PL - -- -  -  -  - DIS