| Code | Definition | Number of Accessions |
| 2 | 1% to 3% visible egg masses present on root system | 5 |
| 3 | 4% to 10% visible egg masses present on root system | 14 |
| 4 | 11% to 25% visible egg masses present on root system | 38 |
| 5 | 26% to 35% visible egg masses present on root system | 208 |
| 6 | 36% to 50% visible egg masses present on root system | 201 |
| 7 | 51% to 65% visible egg masses present on root system | 165 |
| 8 | 66% to 80% visible egg masses present on root system | 161 |
| 9 | 81% to 100% visible egg masses present on root system | 96 |