| Code | Definition | Number of Accessions |
| 1 | very low < 50 g - line <100 g - population, hybrid | 236 |
| 2 | 50- 60 g - line 100-125 g - population, hybrid | 201 |
| 3 | low 61- 70 g - line 126-150 g - population, hybrid | 179 |
| 4 | 71- 80 g - line 151-175 g - population, hybrid | 148 |
| 5 | intermediate 81-100 g - line 176-200 g - population, hybrid | 153 |
| 6 | 101-120 g - line 201-250 g - population, hybrid | 24 |
| 8 | 141-160 g - line 301-350 g - population, hybrid | 1 |