Fig. 5From: Widespread occurrence of ‘Candidatus Phytoplasma ulmi’ in elm species in GermanyInfection rate of U. minor, U. laevis and U. glabra in relation to trunk diameter. Grey bars represent non-infected individuals. White bars represent phytoplasma-infected individuals. The number of individuals considered is given in the bars. The infection percentage in an age group is indicated on the rightBack to article page