Fig. 1
From: Effect of fungal, oomycete and nematode interactions on apple root development in replant soil
Frequency distribution of root necrosis (a), lateral root abundance (b) and crown gall (c) in relation to soil treatments or rootstock genotypes. The letter above each level of specific factors indicates pair-wise comparison results based on the deviance test of nest models in the proportional odds model: treatments sharing at least one common letter do not differ significantly (P < 0.05) from each other