Journal
JOURNAL OF PLANT PHYSIOLOGY
Volume 162, Issue 9, Pages 1013-1021Publisher
ELSEVIER GMBH
DOI: 10.1016/j.jplph.2004.10.010
Keywords
cadmium; chloroplastic pigments; growth parameters; protection mechanisms; Zea mays L
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The influence of cadmium on growth parameters and photosynthetic pigment content was studied in maize leaf segments differing in tissue maturity. Experiments were carried out with maize seedlings Zea mays L. cv. Hiclosil. treated with 25, 50, 100, 150 and 200 mu M Cd for 14 days under low light conditions. Tissue age-dependent decrease of fresh mass, dry mass and area of the leaf segments was correlated with Cd concentration in the growth medium. Cd induced changes in chlorophyll and carotenoid contents, and the specific areas and densities of the leaf segments were dependent on age and metal. concentration. Results are discussed with respect to the protection mechanisms in the leaf segments. (c) 2005 Elsevier GmbH. All rights reserved.
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