Abstract: | Artificial inoculation of rooted Eucalyptus grandis cuttings with Cryphonectria cubensis in the glasshouse showed that significant differences exist in the susceptibility of various Eucalyptus clones to the pathogen. A 61.3% difference in susceptibility was observed between the most resistant and susceptible group of clones. Results appeared, however, to have been influenced by genotype × environment interaction. |