Fig. 9From: Effect the accumulation of bioactive constituents of a medicinal plant (Salvia Miltiorrhiza Bge.) by arbuscular mycorrhizal fungi communityCorrelation analysis of root indexes of S. miltiorrhiza. "*" indicates that there is a significant difference between the two indicators (p < 0.05), and "**" that there is a highly significant difference between the two indicators (p < 0.01)Back to article page