List of descriptors based on the descriptors for yam published by IPGRI and IITA (1997)
Number of days between planting and sprout emergence
Registered 20 days after the outbreak
Counted 20 days after the outbreak
| Code | Term | Description |
|---|---|---|
| 1 | Green | |
| 2 | Purple green | |
| 3 | Green brown | |
| 4 | Dark brown | |
| 5 | Purple | |
| 6 | Other (specify) |
Registered 20 days after the outbreak
| Code | Term | Description |
|---|---|---|
| 1 | Green | |
| 2 | Green with purple edges | |
| 3 | Purple | |
| 4 | Other (specify) |
Observe when the stem is mature (before senescence)
| Code | Term | Description |
|---|---|---|
| 1 | Dwarf | |
| 2 | Shrub type | |
| 3 | Creeper |
| Code | Term | Description |
|---|---|---|
| 1 | <2m | |
| 2 | 2-10m | |
| 3 | >10 m |
Average of 5 plants
| Code | Term | Description |
|---|---|---|
| 1 | Green | |
| 2 | Purple green | |
| 3 | Green brown | |
| 4 | Dark brown | |
| 5 | Purple | |
| 6 | Other (specify) |
Observed on the mature stem
Record the number of branches on the surface
Measured at 15 cm above the base of the plant
Registered at a height of 1 m. Average of five plants
Registered at a height of 1 m
| Code | Term | Description |
|---|---|---|
| 1 | <1 mm | |
| 2 | 1 - 2 mm | |
| 3 | > 2 mm |
| Code | Term | Description |
|---|---|---|
| 1 | Green | |
| 2 | Green with purple edges | |
| 3 | Purple | |
| 4 | Other (specify) |
| Code | Term | Description |
|---|---|---|
| 1 | Scarce | |
| 2 | Dense |
In young leaves
| Code | Term | Description |
|---|---|---|
| 1 | Early | |
| 2 | Late |
Recorded 30 days after the outbreak
| Code | Term | Description |
|---|---|---|
| 1 | Yellowish | |
| 2 | Light green | |
| 3 | Dark green | |
| 4 | Purple green | |
| 5 | Purple | |
| 6 | Other (specify) |
| Code | Term | Description |
|---|---|---|
| 1 | Green | |
| 2 | Purple | |
| 3 | Other (specify) |
| Code | Term | Description |
|---|---|---|
| 1 | All green with purple base | |
| 2 | All green with purple leaf gasket | |
| 3 | All green, purple at both ends | |
| 4 | All purple green with purple base | |
| 5 | All green purple with purple leaf gasket | |
| 6 | All purple green, both tips purple | |
| 7 | Green | |
| 8 | Purple | |
| 9 | Green brown | |
| 10 | Brown | |
| 11 | Dark brown | |
| 12 | Other (specify) |
| Code | Term | Description |
|---|---|---|
| 1 | Go to | |
| 2 | Envés | |
| 3 | Both |
| Code | Term | Description |
|---|---|---|
| 1 | Alternate | |
| 2 | Opposites | |
| 3 | Alternating at the base/opposed above | |
| 4 | Other (specify) |
| Code | Term | Description |
|---|---|---|
| 1 | Simple | |
| 2 | Composed |
| Code | Term | Description |
|---|---|---|
| 1 | Integer | |
| 2 | Serrado |
| Code | Term | Description |
|---|---|---|
| 1 | Shallow lobed | |
| 2 | Deep lobed |
| Code | Term | Description |
|---|---|---|
| 1 | Yellowish | |
| 2 | Light green | |
| 3 | Dark green | |
| 4 | Purple green | |
| 5 | Purple | |
| 6 | Other (specify) |
| Code | Term | Description |
|---|---|---|
| 1 | Scarce | |
| 2 | Dense |
| Code | Term | Description |
|---|---|---|
| 1 | Scarce | |
| 2 | Dense |
| Code | Term | Description |
|---|---|---|
| 1 | Oval | |
| 2 | Cordiform | |
| 3 | Long cordiform | |
| 4 | Wide cordiform | |
| 5 | Long sagittiform | |
| 6 | Wide Sagitiform | |
| 7 | Hastada | |
| 8 | Other (specify) |
| Code | Term | Description |
|---|---|---|
| 1 | Obtuse | |
| 2 | Acute | |
| 3 | Emarginated | |
| 4 | Other (specify) |
| Code | Term | Description |
|---|---|---|
| 1 | Little | |
| 2 | Much |
| Code | Term | Description |
|---|---|---|
| 1 | Upper third | |
| 2 | Medium | |
| 3 | Lower third |
| Code | Term | Description |
|---|---|---|
| 1 | ≤5 cm | |
| 2 | 6 - 9 cm | |
| 3 | ≥10 cm |
| Code | Term | Description |
|---|---|---|
| 1 | Scarce | |
| 2 | Dense |
| Code | Term | Description |
|---|---|---|
| 1 | All green with purple base | |
| 2 | All green with purple leaf gasket | |
| 3 | All green, purple at both ends | |
| 4 | All purple green with purple base | |
| 5 | All green purple with purple leaf gasket | |
| 6 | All purple green, both tips purple | |
| 7 | Green | |
| 8 | Purple | |
| 9 | Green brown | |
| 10 | Brown | |
| 11 | Dark brown | |
| 12 | Other (specify) |
| Code | Term | Description |
|---|---|---|
| 1 | Scarce | |
| 2 | Dense |
| Code | Term | Description |
|---|---|---|
| 0 | No flowering | |
| 1 | Flowering in some years | |
| 2 | Flowering every year |
| Code | Term | Description |
|---|---|---|
| 1 | Tuber | |
| 2 | Rhizome |
| Code | Term | Description |
|---|---|---|
| 1 | Up to six months | |
| 2 | 7 to 8 months | |
| 3 | 9 to 10 months |