| Code | Definition | Number of Accessions |
| 1 | very short < 150 (mm) | |
| 2 | very short to short 150 - 325 (mm) | 13 |
| 3 | short 326 - 500 (mm) | 30 |
| 4 | short to medium 501 - 675 (mm) | 15 |
| 5 | medium 676 - 850 (mm) | 1 |
| 6 | medium to long 851 - 1025 (mm) | |
| 7 | long 1026 - 1200 (mm) | |
| 8 | long to very long 1201 - 1375 (mm) | |
| 9 | very long > 1375 (mm) | |