Abstract
In this study, the combined effects of different salinity and cadmium concentrations (0, 0.05‰ NaCl + 4
mg L-1 Cd, 0.05‰ NaCl + 64 mg L-1 Cd, 5‰ NaCl + 4 mg L-1 Cd, 5‰ NaCl + 64 mg L-1 Cd) on some
pigments (chlorophyll a, chlorophyll b, carotenoids and anthocyanins) and total phenolic compounds
were investigated in two aquatic plants (Myriophyllum heterophyllum Michx. and Potamogeton crispus
L.) at 24 and 96 h. Chlorophyll a, chlorophyll b and carotenoids decreased depending on Cd + NaCl
concentrations and the time (24 h and 96 h) in both species (P<0.05). The anthocyanin concentrations
showed differences in combined Cd and NaCl concentrations in both species at 24 and 96 h. In the two
time periods (24 and 96 h), the levels of phenolic compounds at all concentrations of Cd + NaCl
increased in both M. heterophyllum and P. crispus (P<0.05).
Key words: Aquatic plants, cadmium, sodium chloride (NaCl), phenolic compounds, photosynthetic pigments.
