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Uptake and distribution of cadmium in maize inbred lines

Florijn, P.J. (Landbouwuniversiteit Wageningen (Netherlands). Vakgroep Bodemkunde en Plantevoeding) ; Beusichem, M.L. van

Plant and soil, 1993-03, Vol.150 (1), p.25-32 [Periódico revisado por pares]

Dordrecht: Kluwer Academic Publishers

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Uptake and distribution of cadmium in maize inbred lines
Autor: Florijn, P.J. (Landbouwuniversiteit Wageningen (Netherlands). Vakgroep Bodemkunde en Plantevoeding) ; Beusichem, M.L. van
Assuntos: ABSORCION DE SUBSTANCIAS NUTRITIVAS ; ABSORPTION DE SUBSTANCES NUTRITIVES ; Agricultural soils ; Agronomy. Soil science and plant productions ; Biological and medical sciences ; CADMIO ; CADMIUM ; Classical and quantitative genetics ; Classical and quantitative genetics. Population genetics. Molecular genetics ; Corn ; Fundamental and applied biological sciences. Psychology ; Generalities. Genetics. Plant material ; GENETIC VARIATION ; Genetics and breeding of economic plants ; INBRED LINES ; Inbred strains ; Inbreeding ; LIGNEE CONSANGUINE ; LINEAS CONSANGUINEAS ; Nutrient solutions ; NUTRIENT TRANSPORT ; NUTRIENT UPTAKE ; Plant roots ; Plants ; Sand soils ; Sectie Bodemkwaliteit ; Soil pollution ; Sub-department of Soil Quality ; TRANSPORT DES SUBSTANCES NUTRITIVES ; TRANSPORTE DE NUTRIENTES ; VARIACION GENETICA ; VARIATION GENETIQUE ; ZEA MAYS
É parte de: Plant and soil, 1993-03, Vol.150 (1), p.25-32
Notas: F61
9304976
F30
ObjectType-Article-2
SourceType-Scholarly Journals-1
ObjectType-Feature-1
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Descrição: Genotypic variation in uptake and distribution of cadmium (Cd) was studied in 19 inbred lines of maize (Zea mays L.). The inbred lines were grown for 27 days on an in situ Cd-contaminated sandy soil or for 20 days on nutrient solution culture with 10 µg Cd L⁻¹. The Cd concentrations in the shoots showed large genotypic variation, ranging from 0.9 to 9.9 µg g⁻¹ dry wt. for the Cd-contaminated soil and from 2.5 to 56.9 µg g⁻¹ dry wt. for the nutrient solution culture. The inbred lines showed a similar ranking for the Cd concentrations in the shoots for both growth media (r² = 0.89). Two main groups of inbreds were distinguished: a group with low shoot, but high root Cd concentrations (shoot: 7.4 ± 5.3 µg g⁻¹ dry wt.; root: 206.0 ± 71.2 µg g⁻¹ dry wt.; 'shoot Cd excluder') and a group with similar shoot and root Cd concentrations (shoot: 54.2 ± 3.4 µg g⁻¹ dry wt.; root: 75.6 ± 11.2 µg g⁻¹ dry wt.; 'non-shoot Cd excluder'). The classification of the maize inbred lines and the near equal whole-plant Cd uptake between the two groups demonstrates that internal distribution rather than uptake is causing the genotypic differences in shoot Cd concentration of maize inbred lines. Zinc (Zn), a micronutrient chemically related to Cd, showed an almost similar distribution pattern for all maize inbred lines. The discrepancy in the internal distribution between Cd and Zn emphasizes the specificity of the Cd distribution in maize inbred lines.
Editor: Dordrecht: Kluwer Academic Publishers
Idioma: Inglês

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Uptake and distribution of cadmium in maize inbred lines

Florijn, P.J. (Landbouwuniversiteit Wageningen (Netherlands). Vakgroep Bodemkunde en Plantevoeding) ; Beusichem, M.L. van

Dordrecht: Kluwer Academic Publishers

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