| Code | Definition | Number of Accessions |
| 1 | 1 (absent) - 9 (strong, all leaf area on all plants affected) | 2 |
| 2 | 1 (absent) - 9 (strong, all leaf area on all plants affected) | 2 |
| 3 | 1 (absent) - 9 (strong, all leaf area on all plants affected) | 2 |
| 5 | 1 (absent) - 9 (strong, all leaf area on all plants affected) | 34 |
| 7 | 1 (absent) - 9 (strong, all leaf area on all plants affected) | 38 |
| 9 | 1 (absent) - 9 (strong, all leaf area on all plants affected) | 4 |