Descriptors list used at NPGRL to characterize pigeon pea (Cajanus cajan) accessions. We created this descriptor list based on IPGRI descriptors for pigeon pea, mung bean, Vigna aconitifolia and Phaseolus vulgaris; and the RHS colour chart.
Terminal bud 1-2 mm
| Code | Term | Description |
|---|---|---|
| 1 | Green | |
| 2 | Green-purple | |
| 3 | Purple | |
| 4 | Dark purple | |
| 5 | Mixed | |
| 6 | Other | (specify) |
Average of 10 cotyledonous leaves
Average of 10 cotyledonous leaves
Legend:
Glabrous
Sparse
Intermediate
Abundant
From sowing to 50% seedling emergence
| Code | Term | Description |
|---|---|---|
| 3 | Erect and compact | |
| 5 | Semi-spreading | |
| 7 | Spreading | |
| 9 | Trailing |
| Code | Term | Description |
|---|---|---|
| 1 | Determinate | |
| 2 | Indeterminate |
Recorded at 50% flowering
Legend:
Sparse (main stem easily visible)
Intermediate
Abundant (very leafy)
| Code | Term | Description |
|---|---|---|
| 1 | Green | |
| 2 | Greenish-purple | |
| 3 | Purple | |
| 4 | Dark purple |
| Code | Term | Description |
|---|---|---|
| 1 | Green | |
| 2 | Sun red | |
| 3 | Purple |
If determinate type
| Code | Term | Description |
|---|---|---|
| 3 | Short and erect lateral branches | |
| 5 | Branches tending to be perpendicular to main stem; medium length First lateral branches long and spreading over ground | |
| 7 | 7 |
Measured at the widest portion of the plant
Main color of the petals;RHS color chart number in parenthesis
| Code | Term | Description |
|---|---|---|
| 1 | Ivory | (Green White 157B) |
| 2 | Light yellow | (Yellow 6D) |
| 3 | Yellow | (Yellow 9D) |
| 4 | Orange | (Orange 25D) |
| 5 | Red | (Red 53A) |
| 6 | Purple | (Red purple 59A) |
Color of streaks on dorsal side of the veillum (flag) and second color of the wings and keel
| Code | Term | Description |
|---|---|---|
| 0 | No second flower color | |
| 1 | Red | |
| 2 | Purple |
Pattern of second color on the dorsal side of the flag (veillum, standard)
| Code | Term | Description |
|---|---|---|
| 0 | No pigmented streaks | |
| 3 | Few streaks | |
| 5 | Medium amount of streaks | |
| 7 | Dense streaks | |
| 9 | Uniform coverage of second color |
| Code | Term | Description |
|---|---|---|
| 1 | Green | |
| 2 | Light purple | |
| 3 | Purple | |
| 4 | Mixed, uniformly streaked | |
| 5 | Basal purple | (near pedicel) |
| 6 | Peripheral purple | (on sutures) |
Mean of 10 random pods
Legend:
Glabrous
Intermediate
Heavily pubescent
| Code | Term | Description |
|---|---|---|
| 0 | Absent | |
| 1 | Present |
| Code | Term | Description |
|---|---|---|
| 0 | Straight | |
| 3 | Slightly curved | |
| 5 | Curved |
Legend:
Short beak
Medium length beak
Long beak
Thick beak
| Code | Term | Description |
|---|---|---|
| 1 | Straw | |
| 2 | Light brown | |
| 3 | Brown | |
| 4 | Dark brown |
| Code | Term | Description |
|---|---|---|
| 1 | Plain | |
| 2 | Mottled | |
| 3 | Speckled | |
| 4 | Mottled and speckled | |
| 5 | Ringed |
Dry seed color:RHS Color Chart numbers in parenthesis
| Code | Term | Description |
|---|---|---|
| 1 | White | (Yellow white 158C) |
| 2 | Cream | (Greyed white 156C) |
| 3 | Orange | (Greyed orange 163B) |
| 4 | Light brown | (Yellow orange 22C) |
| 5 | Brown | (Brown 200D) |
| 6 | Light grey | (Grey brown 199B) |
| 7 | Grey | (Greyed green 197A) |
| 8 | Purple | (Greyed purple 187A) |
| 9 | Dark purple | (Greyed purple 187B) |
| 10 | Black | (Black 202A) |
Second color of seed coat coded as in 33 for main color;with 0 representing absence of second seed color
| Code | Term | Description |
|---|---|---|
| 0 | Representing abence of second seed color | |
| 1 | White | (Yellow white 158C) |
| 2 | Cream | (Greyed white 156C) |
| 3 | Orange | (Greyed orange 163B) |
| 4 | Light brown | (Yellow orange 22C) |
| 5 | Brown | (Brown 200D) |
| 6 | Light grey | (Grey brown 199B) |
| 7 | Grey | (Greyed green 197A) |
| 8 | Purple | (Greyed purple 187A) |
| 9 | Dark purple | (Greyed purple 187B) |
| 10 | Black | (Black 202A) |
| Code | Term | Description |
|---|---|---|
| 1 | Oval | (egg shape) |
| 2 | Pea | (globular shape) |
| 3 | Square | (angular shape) |
| 4 | Elongate |
Average of 10 randomly chosen pods of 3 plants randomly selected in a row
A random sample taken from total row yield, in grams