Leaf pigmentation
Measurement at flowering
| Code | Term | Description |
|---|---|---|
| 1 | All purple or red film | |
| 2 | Pigmented basal area | |
| 3 | Central spot | |
| 4 | Two V-shaped stripes | |
| 5 | A V-shaped strip | |
| 6 | Margin and pigmented veins | |
| 7 | A pale green or chlorotic stripe on normal green | |
| 8 | Normal green | |
| 9 | Dark green | |
| 10 | Other (specify) |