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INTERACTIVE EFFECTS OF CADMIUM, COPPER AND NICKEL ON THE GROWTH OF SITKA SPRUCE AND STUDIES OF METAL UPTAKE FROM NUTRIENT SOLUTIONS
Author(s) -
BURTON K. W.,
MORGAN E.,
ROIG A.
Publication year - 1986
Publication title -
new phytologist
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 3.742
H-Index - 244
eISSN - 1469-8137
pISSN - 0028-646X
DOI - 10.1111/j.1469-8137.1986.tb02892.x
Subject(s) - cadmium , shoot , nutrient , chemistry , copper , metal , factorial experiment , horticulture , nickel , botany , zoology , biology , mathematics , statistics , organic chemistry
S ummary The interactive effects of Cd, Cu, and Ni were studied in Sitka spruce [Picea sitchensis (Bong.) Carr] seedlings grown in nutrient solutions supplemented with combinations of these metals over three experiments of 3 × 3 × 3 factorial design. The results indicated that the toxic effects of Cd and Cu may be additive when both metals are present at concentrations which individually reduce yields, and that tree growth at several forestry sites in South Wales may be more severely affected than previously reported. Analysis of variance of the concentrations of the added metals in the plants showed that concentrations of Cd in both roots and shoots were significantly reduced by Cu treatments ( P < 0.01) and that this effect was especially pronounced at the highest concentrations of Cd and Cu (significant Cd × Cu interaction, P < 0.01). Analysis of variance of the concentrations of the nutrients Zn, Mg, Mn, and Ca in roots and shoots showed that both Cd and Cu significantly ( P < 0.01) reduced the concentrations of Mn, and also interactively affected these ( P < 0.01). Concentrations of Mg in the shoots were also significantly reduced by Cu treatments.