Descriptor list used at NPGRL to characterize sweet potato (Ipomoea batatas) accessions. We created this descriptor list based on IPGRI descriptors for sweet potato and the RHS colour chart.
The NPGRL accession number
Site of characterization
Date of sowing in the field
Plot where the accession was planted in the field
| Code | Term | Description |
|---|---|---|
| 1 | Green | |
| 2 | Green with few purple spots | |
| 3 | Green with many purple | |
| 4 | Green with many dark purple spots | |
| 5 | Mostly purple | |
| 6 | Mostly dark purple | |
| 7 | Totally purple | |
| 8 | Totally dark purple | |
| 9 | Others |
| Code | Term | Description |
|---|---|---|
| 0 | Absemt | |
| 1 | Green base | |
| 2 | Green Tip | |
| 3 | Green nodes | |
| 4 | Purple base | |
| 5 | Purple tips | |
| 6 | Purple nodes | |
| 7 | Others |
Degree of hairiness of immature leaves; Recorded at the apex of the vines
| Code | Term | Description |
|---|---|---|
| 0 | Absent | |
| 3 | Sparse | |
| 5 | Moderate | |
| 7 | Heavy |
| Code | Term | Description |
|---|---|---|
| 1 | Rounded | |
| 2 | Reniform | kidney-shaped |
| 3 | Cordate | heart-shaped |
| 4 | Triangular | |
| 5 | Hastate | trilobular and spear-shaped with the basal lobes more or less divergent |
| 6 | Lobed | |
| 7 | Almost divided |
| Code | Term | Description |
|---|---|---|
| 0 | No lateral lobes (entire) | |
| 1 | Very slight (teeth) | |
| 3 | Slight | |
| 5 | Moderate | |
| 7 | Deep | |
| 9 | Very deep |
| Code | Term | Description |
|---|---|---|
| 1 | One | |
| 3 | Three | |
| 5 | Five | |
| 7 | Seven | |
| 9 | Nine |
| Code | Term | Description |
|---|---|---|
| 0 | Absent | |
| 1 | Toothed | |
| 2 | Triangular | |
| 3 | Semi-circular | |
| 4 | Semi-elliptic | |
| 5 | Elliptic | |
| 6 | Lanceolate | |
| 7 | Oblanceolate | |
| 8 | Linear (broad) | |
| 9 | Linear (narrow) |
| Code | Term | Description |
|---|---|---|
| 1 | Yellow | |
| 2 | Green | |
| 3 | Purple spot in the base of main rib | |
| 4 | Purple spots in several veins | |
| 5 | Main rib partially purple | |
| 6 | Main rib mostly or totally purple | |
| 7 | All veins partially purple | |
| 8 | All veins mostly or totally purple | |
| 9 | Lower surface and veins totally purple |
| Code | Term | Description |
|---|---|---|
| 1 | Yellow-green | |
| 2 | Green | |
| 3 | Green with purple edge | |
| 4 | Greyish-green (due to heavy pubescence) | |
| 5 | Green with purple veins on upper surface | |
| 6 | Slightly purple | |
| 7 | Mostly purple | |
| 8 | Green upper, purple lower | |
| 9 | Purple both surfaces |
| Code | Term | Description |
|---|---|---|
| 1 | Yellow-green | |
| 2 | Green | |
| 3 | Green with purple edge | |
| 4 | Greyish-green (due to heavy pubescence) | |
| 5 | Green with purple veins on upper surface | |
| 6 | Slightly purple | |
| 7 | Mostly purple | |
| 8 | Green upper, purple lower | |
| 9 | Purple both surfaces |
Distribution of anthocyanin (purple) pigmentation in the petioles of leaves. Indicate the most predominant colors first.
| Code | Term | Description |
|---|---|---|
| 1 | Green | |
| 2 | Green with purple near stem | |
| 3 | Green with purple near leaf | |
| 4 | Green with purple at both ends | |
| 5 | Green with purple spots throughout the petiole | |
| 6 | Green with purple stripes | |
| 7 | Purple with green near leaf | |
| 8 | Some petioles purple, others green | |
| 9 | Totally or mostly purple |
| Code | Term | Description |
|---|---|---|
| 1 | White | |
| 2 | Cream | |
| 3 | Yellow | |
| 4 | Orange | |
| 5 | Brownish orange | |
| 6 | Pink | |
| 7 | Red | |
| 8 | Purple-red | |
| 9 | Dark purple |
| Code | Term | Description |
|---|---|---|
| 1 | Pale | |
| 2 | Intermediate | |
| 3 | Dark |
| Code | Term | Description |
|---|---|---|
| 0 | Absent | |
| 1 | White | |
| 2 | Cream | |
| 3 | Yellow | |
| 4 | Orange | |
| 5 | Brownish orange | |
| 6 | Pink | |
| 7 | Red | |
| 8 | Purple-red | |
| 9 | Dark purple |
| Code | Term | Description |
|---|---|---|
| 1 | White | |
| 2 | Cream | |
| 3 | Dark cream | |
| 4 | Pale yellow | |
| 5 | Dark yellow | |
| 6 | Pale orange | |
| 7 | Intermediate orange | |
| 8 | Dark orange | |
| 9 | Strongly pigmented with anthocyanin |
| Code | Term | Description |
|---|---|---|
| 0 | Absent | |
| 1 | White | |
| 2 | Cream | |
| 3 | Yellow | |
| 4 | Orange | |
| 5 | Pink | |
| 6 | Red | |
| 7 | Purple-red | |
| 8 | Purple | |
| 9 | Dark purple |
| Code | Term | Description |
|---|---|---|
| 0 | Absent | |
| 1 | Narrow ring in cortex | |
| 2 | Broad ring in cortex | |
| 3 | Scattered spots in flesh | |
| 4 | Narrow ring in flesh | |
| 5 | Broad ring in flesh | |
| 6 | Ring and other areas in flesh | |
| 7 | In longitudinal sections | |
| 8 | Covering most of the flesh | |
| 9 | Covering all flesh |