| Code | Definition | Number of Accessions |
| 0 | no squares - no sign of flowering response in the plot | 1667 |
| 1 | squares - flower buds are formed in the plot | 78 |
| 2 | flowers - flowers are opening, but bolls are not yet formed | 514 |
| 3 | bolls - bolls are developing on the plants | 3030 |
| 4 | open bolls - bolls are already maturing on plants | 631 |
| 9 | plot is segregating for this trait and a single score is not an accurate description or the variation is outside of the rating scale | 110 |