The parameters of Chl a fluorescence of the grass cultivars grown on the polluted and the reference soil.

The cultivars were compared within soil types (reference and polluted) by the LSD test (1) as well as the influence of the soil type on the cultivar was tested by LSD test (2). Values with the same small letters are not different significantly within soil type (rows). *- p>95%; **− P>99%; ***- P>99.9%; n.s. - not significant.