Descriptors for Lathyrus spp. was developed by Dr R.L. Pandey, Dr P.N. Mathur, Dr Stefano Padulosi and Dr R.N. Sharma with inputs from Dr K.W. Riley, Dr V. Ramanatha Rao, Dr Larry Robertson and Dr Bhag Mal. The development of this descriptor list has been coordinated by Dr P.N. Mathur. A draft version prepared in the internationally accepted IPGRI format for descriptor lists was subsequently sent to a number of international experts for their comments and amendments.
International Plant Genetic Resources Instit., (IPGRI). (2000). Descriptors for Lathyrus spp. Rome: Bioversity.
Recorded 10 days after emergence
Code | Term | Description |
---|---|---|
1 | Light green | |
2 | Green | |
3 | Green-purple | |
4 | Purple | |
99 | Other | Specify in descriptor 7.10 Notes |
Recorded 10 days after emergence
Code | Term | Description |
---|---|---|
1 | Light green | |
2 | Green | |
3 | Green-purple | |
4 | Purple | |
99 | Other | Specify in descriptor 7.10 Notes |
Recorded 20 days after emergence
Legend:
Poor
Intermediate
Vigorous
Recorded during emergence to flowering initiation
Legend:
Low
Medium
High
Recorded after flowering initiation
Legend:
Low
Medium
High
Recorded at the beginning of flowering period. (See Fig. 3)
Code | Term | Description |
---|---|---|
1 | Prostorate | |
2 | Spreading | |
3 | Semi-erect | |
4 | Erect |
Code | Term | Description |
---|---|---|
1 | Indeterminate | |
2 | Determinate |
Height of plant at physiological maturity measured from ground to the tip of the longest branch
Recorded on the main branch
Legend:
Few
Medium
Many
Recorded on the main branch
Legend:
Small
Medium
Large
Count the total number of nodes to the first pod-bearing position on the main branch
Recorded at 50% flowering
Code | Term | Description |
---|---|---|
1 | Light green | |
2 | Green | |
3 | Green-purple | |
4 | Purple | |
99 | Other | Specify in descriptor 7.10 Notes |
Measured at the middle of the main branch at 50% flowering
Assessed at the middle of the main branch at 50% flowering
Legend:
Wingless
Narrow
Medium
Wide
Legend:
No coating
Small
Medium
Large
Code | Term | Description |
---|---|---|
1 | Round | |
2 | Square | |
3 | Deeply fasciated | |
99 | Other | Specify in descriptor 7.10 Notes |
Code | Term | Description |
---|---|---|
1 | Evenly distributed throughout the whole plant | |
2 | Mainly on lower part of the plant | |
3 | Mainly in middle part of the plant |
Counted at first pod maturity (only pod-bearing branches)
Measure the longest branch
Counted at first pod maturity (only pod-bearing branches)
Legend:
No nodules
Low
Intermediate
High
Code | Term | Description |
---|---|---|
0 | Absent | Non-active |
1 | Present | Active nodules |
Recorded at 50% flowering
Code | Term | Description |
---|---|---|
0 | Absent | |
1 | Present |
Code | Term | Description |
---|---|---|
1 | Tendril | |
2 | Phyllody | |
3 | Simple | Lamina not bifurcated into leaflets |
4 | Bipinnate | |
5 | Multipinnate | |
99 | Other | Specify in descriptor 7.10 Notes |
Code | Term | Description |
---|---|---|
1 | One pair | |
2 | Two pairs | |
3 | More than two pairs |
Code | Term | Description |
---|---|---|
1 | Light green | |
2 | Green | |
3 | Dark green | |
99 | Other | Specify in descriptor 7.10 Notes |
Code | Term | Description |
---|---|---|
0 | No | |
1 | Yes |
Code | Term | Description |
---|---|---|
0 | No | |
1 | Yes |
Recorded at 50% flowering from the middle area of the main branch
Legend:
Small
Medium
Large
Maximum length of leaf lamina recorded from the middle area of the main branch
Maximum width of leaf lamina recorded from the middle area of the main branch
(See Fig. 4)
Code | Term | Description |
---|---|---|
1 | Linear | |
2 | Lanceolate | |
3 | Ovate-lanceolate | |
4 | Ovate | |
99 | Other | Specify in descriptor 7.10 Notes |
Measured from the base to the point where leaf intersects petiole
Code | Term | Description |
---|---|---|
1 | Green | |
2 | Purple-green | |
99 | Other | Specify in descriptor 7.10 Notes |
Code | Term | Description |
---|---|---|
0 | Absent | |
1 | Short | |
2 | Medium | |
3 | Long | |
99 | Other | Specify in descriptor 7.10 Notes |
Code | Term | Description |
---|---|---|
1 | Tendril subulate | |
2 | Tendril simple | |
3 | Tendril compound | |
99 | Other | Specify in descriptor 7.10 Notes |
Code | Term | Description |
---|---|---|
1 | Tendril subulate | |
2 | Tendril simple | |
3 | Tendril compound | |
99 | Other | Specify in descriptor 7.10 Notes |
Recorded when 80% of pods have reached maturity
Legend:
Low
Medium
Moderate
Recorded when 80% of pods have reached maturity
Legend:
No visual senescence
Slight visual senescence
Moderate senescence
Conspicuous concurrent senescence
Code | Term | Description |
---|---|---|
0 | Absent | |
1 | Present |
Code | Term | Description |
---|---|---|
1 | Upper surface of leaf | |
2 | Lower surface of leaf | |
3 | Both upper and lower surfaces of leaf | |
4 | Only on leaf margin | |
99 | Other | Specify in descriptor 7.10 Notes |
Code | Term | Description |
---|---|---|
1 | Subulate | |
2 | Linear | |
3 | Half shaft-shaped | |
4 | Shaft-shaped | |
5 | Heart-shaped | |
99 | Other | Specify in descriptor 7.10 Notes |
Legend:
Small
Medium
Large
Number of days from sowing to when the first flower opens
Number of days from sowing to stage when 50% of plants have begun to flower in a row
Number of days from sowing to first mature pod separating from plant
From sowing to when 80% of plants have mature pods
Number of days from first flowering to first mature pod
Measured as the mean length of randomly chosen peduncles at maturity
(Just before opening)
Code | Term | Description |
---|---|---|
1 | Globular | |
2 | Intermediate | |
3 | Long | |
99 | Other | Specify in descriptor 7.10 Notes |
(Just before opening)
Legend:
Small
Medium
Large
Legend:
Small
Medium
Large
Measured on randomly selected, fully expanded flowers
Measured on randomly selected, fully expanded flowers
Score on fresh, open flowers for score standard, wing and keel colours separately
Code | Term | Description |
---|---|---|
1 | White | |
2 | White blue | |
3 | Blue | |
4 | Grey | |
5 | Light yellow | |
6 | Yellow | |
7 | Pink | |
8 | Orange | |
9 | Red | |
10 | Violet-blue | |
11 | Violet | |
99 | Other | Specify in descriptor 7.10 Notes |
Code | Term | Description |
---|---|---|
1 | Blue | |
2 | Grey | |
3 | Violet | |
4 | Yellow | |
99 | Other | Specify in descriptor 7.10 Notes |
Code | Term | Description |
---|---|---|
1 | Light green | |
2 | Green | |
3 | Green-purple | |
99 | Other | Specify in descriptor 7.10 Notes |
Code | Term | Description |
---|---|---|
1 | Shorter than tube | |
2 | Equal to tube | |
3 | Longer than tube |
Legend:
Narrow
Medium
Broad
Code | Term | Description |
---|---|---|
1 | Sharp | |
2 | Blunt | |
99 | Other | Specify in descriptor 7.10 Notes |
Recorded up to 50% pod maturity
Recorded as height to the lowest pod (see descriptor 7.2.4)
Recorded as length of stem between the lowest pod-bearing position to the topmost pod-bearing position
Code | Term | Description |
---|---|---|
1 | One | |
2 | Two | |
3 | Three | |
99 | Other | Specify in descriptor 7.10 Notes |
Mean number of pods. Recorded from randomly selected plants at physiological maturity
Mean number of pods having seed(s). Recorded from randomly selected plants at physiological maturity
(See Fig. 5)
Code | Term | Description |
---|---|---|
1 | Oblong-elliptical | |
2 | Medium oblong-elliptical | |
3 | Curved | |
4 | Beaded | |
5 | Broad-linear | |
6 | Broad-elliptical | |
99 | Other | Specify in descriptor 7.10 Notes |
Recorded on mature pods. (See Fig. 6)
Code | Term | Description |
---|---|---|
1 | Straight | |
2 | Slightly curved | |
3 | Curved |
(See Fig. 7)
Code | Term | Description |
---|---|---|
1 | Pointed | |
2 | Blunt | |
99 | Other | Specify in descriptor 7.10 Notes |
Recorded on a fully expanded immature pod from end of last loculus up to the pod tip
Legend:
Absent
Short
Medium
Long
Code | Term | Description |
---|---|---|
1 | Yellow-cream | |
2 | Light green | |
3 | Green | |
4 | Dark green | |
5 | Green-purple | |
6 | Light purple | |
7 | Purple | |
99 | Other | Specify in descriptor 7.10 Notes |
Code | Term | Description |
---|---|---|
1 | Yellow-green | |
2 | Violet mottled | |
3 | Grey | |
99 | Other | Specify in descriptor 7.10 Notes |
Code | Term | Description |
---|---|---|
1 | Longitudinal | |
2 | Netted | |
99 | Other | Specify in descriptor 7.10 Notes |
Maximum mean length of randomly selected mature pods. Recorded at physiological maturity
Maximum mean width of randomly selected mature pods. Recorded at physiological maturity
Legend:
Absent
Narrow
Medium
Wide
Legend:
Absent
Low
Medium
Large
(See Fig. 8)
Legend:
Absent
Slight
Medium
Pronouncred
Mean number of seeds counted on randomly selected pods. Recorded at physiological maturity
Scored one week after maturity
Legend:
No shattering
Low shattering
Medium shattering
High shattering
(See Fig. 9)
Code | Term | Description |
---|---|---|
1 | Oblate or flattened | |
2 | Triangular | |
3 | Rhomboid | |
4 | Square | |
5 | Obtriangular | |
6 | Spherical | |
99 | Other | Specify in descriptor 7.10 Notes |
Legend:
Small
Medium
Large
Code | Term | Description |
---|---|---|
1 | Greyed-white | |
2 | Yellow-white | |
3 | Grey | |
4 | Brown | |
5 | Yellow-green | |
6 | Pink | |
7 | Red-purple | |
8 | Black | |
9 | Grey mottled | |
10 | Green mottled | |
99 | Other | Specify in descriptor 7.10 Notes |
Code | Term | Description |
---|---|---|
1 | Smooth | |
2 | Tubercular |
Code | Term | Description |
---|---|---|
0 | Absent | |
1 | Marbled | |
2 | Dotted | |
3 | Streaked | |
4 | Mixture | Any combination of 1, 2 and 3 |
Code | Term | Description |
---|---|---|
1 | Cream | |
2 | Green | |
3 | Brown | |
4 | Red-purple | |
5 | Black | |
99 | Other | Specify in descriptor 7.10 Notes |
Recorded after removing the seed coat
Code | Term | Description |
---|---|---|
1 | Yellow | |
2 | Orange | |
99 | Other | Specify in descriptor 7.10 Notes |
Legend:
Narrow
Medium
Wide
Code | Term | Description |
---|---|---|
0 | Absent | |
1 | Present |
Weight of 100 randomly selected mature seeds at 8-10% (air-dry) seed moisture content
Recorded on the basis of 94% ethanol displaced by 100 seeds
Recorded as mean weight of seeds on five randomly selected plants
Recorded at 8-10 leaf stage
Legend:
Poor
Medium
Good
Legend:
Poor
Medium
Good
Legend:
Poor
Medium
Good
Code | Term | Description |
---|---|---|
0 | Absent | |
1 | Present |
Legend:
Poor
Medium
Good
Recorded at 50% flowering
Legend:
Poor Main stem easily visible
Medium
Good Very leafy
Recorded in comparison with other forage legumes (specify the name of crop used for comparison)