| Code | Definition | Number of Accessions |
| 1 | very short < 60 (mm) | 5 |
| 2 | very short to short 60 - 100 (mm) | 68 |
| 3 | short 101 - 140 (mm) | 39 |
| 4 | short to medium 141 - 180 (mm) | 5 |
| 5 | medium 181 - 220 (mm) | 6 |
| 6 | medium to long 221 - 260 (mm) | 4 |
| 7 | long 261 - 300 (mm) | 3 |
| 8 | long to very long 301 - 340 (mm) | |
| 9 | very long > 340 (mm) | |