Petiole canal of the third leaf
The third leaf (Leaf III) is counted from the last leaf produced before bunch emergence. Cut the petiole halfway between the pseudostem and the leaf blade and examine the cross section
| Code | Term | Description |
|---|---|---|
| 1 | Margins spreading | |
| 2 | Margins erect | |
| 3 | Margins curved inward | |
| 4 | Margins overlapping |