Descriptor list details

NPGRL descriptors for sweet potato

2018

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.

Crop
Sweetpotato
Publisher
Not specified
Version
2018

The NPGRL accession number

Classification
Characterization descriptor
Data type
Free text

Site of characterization

Classification
Characterization descriptor
Data type
Free text

Date of sowing in the field

Classification
Characterization descriptor
Data type
Date

Plot where the accession was planted in the field

Classification
Characterization descriptor
Data type
Numeric
Classification
Characterization descriptor
Data type
Coded
CodeTermDescription
1Green
2Green with few purple spots
3Green with many purple
4Green with many dark purple spots
5Mostly purple
6Mostly dark purple
7Totally purple
8Totally dark purple
9Others
Classification
Characterization descriptor
Data type
Coded
CodeTermDescription
0Absemt
1Green base
2Green Tip
3Green nodes
4Purple base
5Purple tips
6Purple nodes
7Others

Degree of hairiness of immature leaves; Recorded at the apex of the vines

Classification
Characterization descriptor
Data type
Coded
CodeTermDescription
0Absent
3Sparse
5Moderate
7Heavy
Classification
Characterization descriptor
Data type
Coded
CodeTermDescription
1Rounded
2Reniformkidney-shaped
3Cordateheart-shaped
4Triangular
5Hastatetrilobular and spear-shaped with the basal lobes more or less divergent
6Lobed
7Almost divided
Classification
Characterization descriptor
Data type
Coded
CodeTermDescription
0No lateral lobes (entire)
1Very slight (teeth)
3Slight
5Moderate
7Deep
9Very deep
Classification
Characterization descriptor
Data type
Coded
CodeTermDescription
1One
3Three
5Five
7Seven
9Nine
Classification
Characterization descriptor
Data type
Coded
CodeTermDescription
0Absent
1Toothed
2Triangular
3Semi-circular
4Semi-elliptic
5Elliptic
6Lanceolate
7Oblanceolate
8Linear (broad)
9Linear (narrow)
Classification
Characterization descriptor
Data type
Coded
CodeTermDescription
1Yellow
2Green
3Purple spot in the base of main rib
4Purple spots in several veins
5Main rib partially purple
6Main rib mostly or totally purple
7All veins partially purple
8All veins mostly or totally purple
9Lower surface and veins totally purple
Classification
Characterization descriptor
Data type
Coded
CodeTermDescription
1Yellow-green
2Green
3Green with purple edge
4Greyish-green (due to heavy pubescence)
5Green with purple veins on upper surface
6Slightly purple
7Mostly purple
8Green upper, purple lower
9Purple both surfaces
Classification
Characterization descriptor
Data type
Coded
CodeTermDescription
1Yellow-green
2Green
3Green with purple edge
4Greyish-green (due to heavy pubescence)
5Green with purple veins on upper surface
6Slightly purple
7Mostly purple
8Green upper, purple lower
9Purple both surfaces

Distribution of anthocyanin (purple) pigmentation in the petioles of leaves. Indicate the most predominant colors first.

Classification
Characterization descriptor
Data type
Coded
CodeTermDescription
1Green
2Green with purple near stem
3Green with purple near leaf
4Green with purple at both ends
5Green with purple spots throughout the petiole
6Green with purple stripes
7Purple with green near leaf
8Some petioles purple, others green
9Totally or mostly purple
Classification
Characterization descriptor
Data type
Date
Classification
Characterization descriptor
Data type
Coded
CodeTermDescription
1White
2Cream
3Yellow
4Orange
5Brownish orange
6Pink
7Red
8Purple-red
9Dark purple
Classification
Characterization descriptor
Data type
Coded
CodeTermDescription
1Pale
2Intermediate
3Dark
Classification
Characterization descriptor
Data type
Coded
CodeTermDescription
0Absent
1White
2Cream
3Yellow
4Orange
5Brownish orange
6Pink
7Red
8Purple-red
9Dark purple
Classification
Characterization descriptor
Data type
Coded
CodeTermDescription
1White
2Cream
3Dark cream
4Pale yellow
5Dark yellow
6Pale orange
7Intermediate orange
8Dark orange
9Strongly pigmented with anthocyanin
Classification
Characterization descriptor
Data type
Coded
CodeTermDescription
0Absent
1White
2Cream
3Yellow
4Orange
5Pink
6Red
7Purple-red
8Purple
9Dark purple
Classification
Characterization descriptor
Data type
Coded
CodeTermDescription
0Absent
1Narrow ring in cortex
2Broad ring in cortex
3Scattered spots in flesh
4Narrow ring in flesh
5Broad ring in flesh
6Ring and other areas in flesh
7In longitudinal sections
8Covering most of the flesh
9Covering all flesh
Classification
Characterization descriptor
Data type
Free text