Distribution of Values for
Root Aphids (1-4) (ROOT APHID (1-4 SCALE))
| Code | Definition | Number of Accessions |
| 1 | no nymphs or adults present | 24 |
| 2 | nymphs present, no adults present | 127 |
| 3 | nymphs present, few adults present | 78 |
| 4 | nymphs present, mant adults present | 36 |