The CORESTA Bacterial Wilt Collaborative Sub-Group was set up in 1994 and the first trials were grown in the Southern hemisphere in the 1995/96 season. The mandate was to collect information on bacterial wilt (Ralstonia solanacearum (Smith) Yabuuchi et al.), addressing four specific objectives:

1. To investigate the apparent anomaly that the most widely used source of resistance, derived from T.I.448A, does not appear to hold up in some countries, notably South Africa.
2. To establish whether different bacterial types exist, based on host reaction.
3. To identify sources of resistance which will be useful to breeders.
4. To establish whether the T.I.448A-derived resistance is recessive, as reported.

This Final Report summarises the activities of the Sub-Group and the achievement of its objectives.