Effect of lead compounds on regeneration of mosses Atrichum undulatum (Hedw.) Beauv. and Plagiomnium cuspidatum (Hedw.) K op.

Abstract

The influence of various lead compounds concentrations on the regeneration of green and brown Atrichum undulatum and Plagiomnium cuspidatum shoot fragments was studied. Both these species are highly tolerant to the lead content in the substrate. A. undulatum is more susceptible than the other species. Concentrations of 120 ppm PbCl2 and 240 ppm Pb(NO3)2 inhibit and lower concentrations stimulate shoot regeneration.