| Code | Definition | Number of Accessions |
| 0 | glandless - no observable gossypol glands on the boll surface | 79 |
| 1 | medium - typical density of gossypol glands observed on most G. hirsutum cultivars | 3497 |
| 2 | light - less gossypol glands than is normally observed on most G. hirsutum cultivars | 130 |
| 3 | heavy - more gossypol glands than is normally observed on most cotton cultivars. Often seen with G. barbadense | 2242 |
| 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 | 69 |