摘要：In this work we aimed to study the influence of Zn, Cu and Pb compounds on spore germination and gametophyte development in the species Dryopteris affinis (Lowe) Fraser-Jenkins and Dryopteris filix-mas (L.) Schott. The following initial variants were prepared: V 1 Cu 140 mg·L -1 Knop solution, V 1 Zn 300 mg·L -1 Knop solution, V 1 Pb 300 mg·L -1 Knop solution. From these variants we considered V 2 and V 3 2 as the concentrations, respectively, 5 and 10 times higher than the initial ones. The percentage of spores germinated was noted to decrease with the increase in the metal concentration in the solution so that there are significant differences between the control and metal variants; in some variants there was no germination reported: in V 3 Pb in both species and in V 2 Pb in the Dryopteris filix-mas. With regard to the gametophyte differentiation in very few variants, the stage of chordate prothallus was reached (C, V 1 Pb, V 1 Zn: in the two species). In V 2 and V 3 , regardless of the species and metal, the spores a nd filaments turn to necrosis.
