Characteristics of variability of morpho-physiological parameters of lesser duckweed (Lemna minor) under heavy metals cultivation

It was shown scientifically substantiated the use of lesser duckweed (Lemna minor L.) as a test object for environmental monitoring purposes when contaminated with copper (II), iron lead and zinc cations. The influence metal cations in concentration range from 0.1 to 10.0 mg/l on specific growth rate dynamics changes total area leaf blades (fronds) freshwater plants has been studied. that Cu2+ Fe2+ 0.1-0.25 mg/ml, did not differ control plants, while had 17.3 % 30 inhibitory effect, respectively. Analysis curves algae 0.5-2.5 showed effectiveness effect decreased series Zn2+ > Pb2+ Cu2+, which also confirmed by data decrease average frond areas before 7 days after cultivation. results work show small minor) can be used bioindication measures regarding content elements group heavy metals (copper zinc) water bodies.