(00024)Elevated CO_2 in air changes photosynthetic response of Hordeum vulgare and Bromus secalinus to cadmium pollution in soil

摘要

The aim of this study was to investigate the response of photosynthetic system and growth of summer barley (Hordeum vulgare L.)and rye brome (Bromus secalinus L.)to different cadmium concentrations effect under elevated CO_2 in atmosphere. The growth and response of photosynthetic system were evaluated. The results showed that barley was more sensitive to Cd impact under all investigated CO_2 concentrations. Increasing CO_2 concentration increased photosynthetic rate and decreased the negative effect of Cd. The effect of Cd increased stomatal conductance of barley under elevated CO_2, while for brome it decreased. Photosynthetic pigments of barley also were more sensitive to Cd effect, but the losses were lower under elevated CO_2.