| Code | Definition | Number of Accessions |
| 1 | very low (very sensitive) | 180 |
| 2 | very low (very sensitive) - low (sensitive) | 502 |
| 3 | low (sensitive) | 739 |
| 4 | low (sensitive) - medium (medium resistant) | 530 |
| 5 | medium (medium resistant) | 414 |
| 6 | medium (medium resistant) - high (high-resistant) | 365 |
| 7 | high (high-resistant) | 470 |
| 8 | high (high-resistant) - very high (resistant-immune) | 360 |
| 9 | very high (resistant-immune) | 193 |