| Code | Definition | Number of Accessions |
| 1 | very low (very sensitive) | 184 |
| 2 | very low (very sensitive) - low (sensitive) | 540 |
| 3 | low (sensitive) | 776 |
| 4 | low (sensitive) - medium (medium resistant) | 553 |
| 5 | medium (medium resistant) | 429 |
| 6 | medium (medium resistant) - high (high-resistant) | 373 |
| 7 | high (high-resistant) | 483 |
| 8 | high (high-resistant) - very high (resistant-immune) | 377 |
| 9 | very high (resistant-immune) | 202 |