| Code | Definition | Number of Accessions |
| 1 | very small <300 cm2 - line <350 cm2 - population,hybrid | 312 |
| 2 | 300-350 cm2 - line 350-400 cm2 - population, hybrid | 178 |
| 3 | small 351-400 cm2 - line 401-450 cm2 - population, hybrid | 147 |
| 4 | 401-450 cm2 - line 451-500 cm2 - population,hybrid | 47 |
| 5 | intermediate 451-500 cm2 - line 501-550 cm2 - population,hybrid | 26 |
| 6 | 501-550 cm2 - line 551-600 cm2 - population,hybrid | 4 |
| 7 | large 551-600 cm2 - line 601-650 cm2 - population, hybrid | 1 |
| 8 | 601-650 cm2 - line 651-700 cm2 - population,hybrid | 1 |
| 9 | very large >650 cm2 - line >700 cm2 - population,hybrid | 2 |