| Code | Definition | Number of Accessions |
| 1 | very low (very sensitive) | 17 |
| 2 | very low (very sensitive) - low (sensitive) | 189 |
| 3 | low (sensitive) | 352 |
| 4 | low (sensitive) - medium (medium resistant) | 356 |
| 5 | medium (medium resistant) | 210 |
| 6 | medium (medium resistant) - high (high-resistant) | 222 |
| 7 | high (high-resistant) | 269 |
| 8 | high (high-resistant) - very high (resistant-immune) | 454 |
| 9 | very high (resistant-immune) | 80 |