Abstract

In detached leaf inoculation tests, the susceptibility of each of 46 provenances belonging to 16 spp. of Eucalyptus to C. quinqueseptatum [Calonectria quinqueseptata], C. clavatum and C. [Calonectria] ilicicola generally differed significantly. Only a few provenances were equally resistant or susceptible to all the species. C. clavatum was the most virulent species, C. ilicicola the least and C. quinqueseptata intermediate, the percentage of provenances showing highly susceptible reactions being 48, 30 and 35, respectively