Fig. 4From: Effect of arbuscular mycorrhizal fungi on the accumulation of secondary metabolites in roots and reproductive organs of Solanum nigrum, Digitaria sanguinalis and Ipomoea purpureaDPPH radical scavenging activity (%) in different parts of Solanum nigrum, Digitaria sanguinalis and Ipomoea purpurea at final harvest. Pots did not receive any mycorrhizal inoculum (control) or were inoculated with F. mosseae, R. fasciculatum or R. intraradices. Bars represent means (n = 4 plants) ± SE. Bars topped by the same letter indicate no significant differences between treatments at the 5% level using Duncan’s multiple-range testBack to article page