| Code | Definition | Number of Accessions |
| 2 | very short - short 3,0- 4,5 cm | 8 |
| 3 | short 4,6- 6,0 cm | 141 |
| 4 | short - medium 6,1- 7,5 cm | 613 |
| 5 | medium 7,6- 9,0 cm | 2295 |
| 6 | medium - long 9,1-10,5 cm | 1391 |
| 7 | long 10,6-12,0 cm | 498 |
| 8 | long - very long 12,1-13,5 cm | 147 |
| 9 | very long >13,5 cm | 70 |