| Code | Definition | Number of Accessions |
| 1 | very low (very sensitive) | 14 |
| 2 | very low (very sensitive) - low (sensitive) | 183 |
| 3 | low (sensitive) | 335 |
| 4 | low (sensitive) - medium (medium resistant) | 339 |
| 5 | medium (medium resistant) | 203 |
| 6 | medium (medium resistant) - high (high-resistant) | 205 |
| 7 | high (high-resistant) | 262 |
| 8 | high (high-resistant) - very high (resistant-immune) | 443 |
| 9 | very high (resistant-immune) | 79 |