| Code | Definition | Number of Accessions |
| 1 | very low (very sensitive) | 116 |
| 2 | very low (very sensitive) - low (sensitive) | 210 |
| 3 | low (sensitive) | 429 |
| 4 | low (sensitive) - medium (medium resistant) | 596 |
| 5 | medium (medium resistant) | 704 |
| 6 | medium (medium resistant) - high (high-resistant) | 482 |
| 7 | high (high-resistant) | 345 |
| 8 | high (high resistant) - very high (resistant-immune) | 237 |
| 9 | very high (resistant-immune) | 49 |