| Code | Definition | Number of Accessions |
| 1 | Few, if any, suckers produced near the inflorescence | 110 |
| 3 | Suckers produced from nodes in the top quarter of plant | 224 |
| 5 | Suckers produced from nodes in the top half of plant | 515 |
| 7 | Suckers produced from all nodes except the bottom quarter of plant | 428 |
| 9 | Suckers produced from all plant nodes | 230 |