Title: Evaluation of copper, nickel, and zinc tolerances in four grass species
Abstract: Clones of Agrostis gigantea, Deschampsia caespitosa, Hordeum jubatuin, and Poa compressa were evaluated for their tolerance with respect to copper, nickel, and zinc. Most of the plants originated from acidic, copper- and nickel-contaminated soils near Sudbury, Ont. Metal tolerance was assayed by measuring all of the adventitious roots growing from tillers but excluding lateral roots. Tolerance of copper, nickel, and zinc was evident in the four clones of D. caespitosa originating from Sudbury. One clone of A. gigantea originating from a roast bed showed tolerance of copper, while none showed tolerance of cither nickel or zinc. One clone of P. compressa from Sudbury indicated increased tolerance of copper and nickel, yet its root growth was inhibited at lower zinc concentrations than that of a companion clone from Sudbury and a control. The H. jubatum plants showed no tolerance of any of the metals. Copper was most toxic to all of the species, followed by nickel and then zinc.
Publication Year: 1985
Publication Date: 1985-01-01
Language: en
Type: article
Indexed In: ['crossref']
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Cited By Count: 26
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