Fig. 2From: Novel soil-less potting mixes for the mycorrhization of Quercus pubescens Willd. seedlings with Tuber melanosporum Vittad.PCA analysis using shoot and root parameters, and percent of mycorrhization for each individual grown in the three potting mixes. The minimal spanning tree as the shortest possible set of lines connecting all points is also shown. Red, blue and black dots indicate control, Mix1, and Mix2 respectivelyBack to article page