Interaction between cadmium and nitrogen and its effects on the growth and photosynthetic pigments of young sunflower plants
2001
Kastori, R.R. (Institute of Field and Vegetable Crops, Novi Sad (Yugoslavia)) | Sakac, Z.O. | Petrovic, N.M. | Arsenijevic-Maksimovic, I.V. | Plesnicar, M.I. | Pankovic, D.M.
The interactions among different concentrations of nitrogen and cadmium and their effects on the growth sunflower plants in water culture were studied. Increases in the concentrations of nitrogen and cadmium in the nutritive solution brought proportional increases of these elements in plants. Maximum values of plant height, leaf area, fresh mass of the second pair of leaves and the content of chloroplast pigments, chlorophyll a+b and total carotenoids were obtained with the medium concentration of nitrogen (7.5 mM). The increases in cadmium concentration reduced the values of all parameters. The adverse action of the maximum concentration of cadmium (5.0 microM) was lowest when the nitrogen provision of plants was optimal. The obtained results permit the conclusion that the optimal provision of nitrogen may mitigate the negative effects of cadmium on sunflower plants.
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