Differential cadmium accumulation and phytotoxicity in sixteen tobacco cultivars
- Rutgers Univ., New Brunswick, NJ (USA)
A greenhouse experiment was conducted to determine the effect of plant genotype on cadmium accumulation and phytotoxicity in tobacco. When low levels of CdCl{sub 2} were added to the nutrient solution of 16 tobacco cultivars growing in sand culture, the heavy metal was partitioned in the following order: leaves > roots > stems. Because leaves are the commercial product, this pattern of partitioning is highly undersirable. The concentration of Cd accumulated in the tissues varied with plant genotype and level of Cd treatment. At the 0.25 ppm Cd treatment, a maximum of 127.6 ppm Cd was found in foliage of the Coker-48 variety, and at the 1.0 ppm Cd treatment, a maximum of 382.6 ppm Cd was detected in the foliage of NC-232. None of the Cd-treated tobacco plants exhibited visual foliar symptoms commonly observed in other plant species. A concentration of 0.25 ppm Cd stimulated shoot height, internode length and leaf number but inhibited total dry weight and percent dry weight. Cd phytotoxicity was found to vary with plant genotype and level of Cd treatment but not with the amount of Cd accumulated by the plant.
- OSTI ID:
- 7254270
- Journal Information:
- JAPCA, the International Journal of Air Pollution Control and Hazardous Waste Management; (USA), Vol. 39:10; ISSN 0894-0630
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
CADMIUM
TOXICITY
GLYCINE HISPIDA
SENSITIVITY
BIOLOGICAL ACCUMULATION
GENOTYPE
LEAVES
PLANT STEMS
ROOTS
ELEMENTS
LEGUMINOSAE
MAGNOLIOPHYTA
MAGNOLIOPSIDA
METALS
PLANTS
560300* - Chemicals Metabolism & Toxicology