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We investigated the influence of ammonia/nitrate ratio and phosphate concentration on biomass and accumulation of metabolites in adventitious roots of Glycyrrhiza uralensis Fisch. A NH4+/NO3− ratio of 10:20 was optimal for the production of biomass (0.30 g dry weight) as well as polysaccharide (18.98 mg g−1) and glycyrrhetinic acid (0.31 mg g−1). The content of glycyrrhizic acid (0.47 mg g−1) and...
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