Change of some physiological indicators the duckweed small (Lemna minor L.) at effect of salts of nickel and zinc

Heavy metals influence all systems of a live organism. Anthropogenous influence decides on the help of the analysis of a condition of separate individuals. The work purpose - identification of reaction of a system of pigments and accumulation of Lemna minor proline in the presence of heavy metals Zn2+ and Ni2+ in the water environment. Zn2+ and Ni2+ salts exert the negative impact on the maintenance of a chlorophyll a and b, cause the increase in the concentration of carotenoids. High concentration of metals (over 1.0 mg/l) cause oppression of pigmentary system. The concentration of Zn2+ and Ni2+ is higher, it is more than the content of free proline in the leaf of Lemna minor L. In tests with nickel solutions concentration of proline is less, than in tests with zinc solutions. The expressed tendency of increase in the concentration of proline at the increase in the concentration of the pollutant is the reaction of a plant to action a stress factor.