| Code | Definition | Number of Accessions |
| 0 | absent - no nectar glands seen on base of the boll | 485 |
| 1 | present - nectar gland seen at least once on the base of the boll. | 4184 |
| 2 | reduced - nectar gland is small in size and low in frequency on the plant | 2482 |
| 3 | inactive - nectar is absent from the gland | 5 |
| 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 | 146 |