Influence of cadmium and zinc on growth and photosynthesis of Bacopa monniera cultivated in vitro

Abstract

This study evaluates the impact of cadmium and zinc interaction on the amount of soluble proteins, CO2 fixation, stomatal conductance and intercellular CO2 contents in regenerants of B. monniera. The regenerants were grown for 16 weeks on MS medium containing cadmium and zinc in various concentrations. Cadmium decreased the stomatal conductance, photosynthetic rate and root growth but increased the protein content. Additional supply of zinc in the medium reduced the adverse effects of cadmium on these parameters.