Fig. 1From: Nostoc calcicola extract improved the antioxidative response of soybean to cowpea aphidGeneration of superoxide anion radical (O ·−2 ) in leaves of Glycine max cv. “Nam Dan” under infestation of Aphis craccivora and inoculation of Nostoc calcicola HN9 extract. Values represent means and s.e. from three independent experiments. (*) In figure shown the significant difference between the experimental variants and control at level P < 0.05Back to article page