| Code | Definition | Number of Accessions |
| 0 | Host Group 0, Resistant Gene 0 | 5 |
| 1 | Host Group 1, Resistant Gene bc-u | 2 |
| 10 | Host Group 10, Resistant Gene I, bc-1.2 | 3 |
| 11 | Host Group 11, Resistant Gene I, bc2.2 | 2 |
| 12 | Host Group 12, Resistant Gene I, bc-3 | 1 |
| 13 | No host group, Resistant Gene bc-1.2, bc-2 | 1 |
| 2 | Host Group 2, Resistant Gene bc-1 | 4 |
| 3 | Host Group 3, Resistant Gene bc-1.2 | 4 |
| 4 | Host Group 4, Resistant Gene bc-2 | 4 |
| 5 | Host Group 5, Resistant Gene bc-1, bc-2 | 1 |
| 6 | Host Group 6, Resistant Gene bc-2.2 | 4 |
| 7 | Host Group 7, Resistant Gene bc-3 | 2 |
| 8 | Host Group 8, Resistant Gene I | 2 |
| 9a | Host Group 9a, Resistant Gene I, bc-1 | 1 |
| 9b | Host Group 9b, Resistant Gene I, bc-1 | 2 |