Color of dorsal side of grain
| Code | Term | Description |
|---|---|---|
| 1 | White | |
| 2 | Yellow | |
| 3 | Yellow-orange | |
| 4 | Yellowish-white | |
| 5 | Blue-black | |
| 6 | Orange | |
| 7 | Dark-red | |
| 8 | Mixed color | |
| 9 | Red | |
| 10 | Yellowish white | |
| 11 | Red Orange | |
| 12 | Orange | |
| 13 | Blue black | |
| 14 | Mixtured color | |
| 15 | Mixture | |
| 16 | Yellow Orange |