Résumé
Compared with performance evaluations, in-depth evaluations are more complete disease resistance evaluations carried out on a smaller number of sites which are used to screen new, improved hybrids and, if requested by breeding programmes, parental breeding lines. They can also be used to conduct basic research on the pathogen and its relationship with its host, such as epidemiological studies and host-pathogen relationships for different strains. The protocols in this guide apply only to evaluations of the host plant's resistance and tolerance, adaptability and productivity.