In NGBT we use IPBGR Wheat descriptors published in 1985 (https://www.bioversityinternational.org/e-library/publications/detail/descriptors-for-wheat-revised/) and UPOV descriptors from 2012. Individual descriptors are modified to better match our needs.
A visual measure of the density of a spike measured on a 1–9 scale
Legend:
Very lax
Lax
Intermediate
Dense
Very dense
Legend:
Awnless
Awnletted short awns
Awned conspicuous awns
Observed on the outer glume
| Code | Term | Description |
|---|---|---|
| 1 | White | |
| 2 | Red to brown | |
| 3 | Purple to black |
Measured on outer side of sterile glume
Legend:
Absent
Low
High
The average number of spikelets per spike from five typical spikes selected from a growing accession
The average number of seeds from a spikelet – obtained from the central portion of the spike
| Code | Term | Description |
|---|---|---|
| 1 | White | |
| 2 | Red | |
| 3 | Purple |
Legend:
Small
Intermediate
Large
Very large
Legend:
Absent or very weak
Weak
Medium
Strong
Very strong
Legend:
Absent or very weak
Weak
Medium
Strong
| Code | Term | Description |
|---|---|---|
| 1 | Awnless | |
| 2 | Tip awned | |
| 3 | Half awned | |
| 4 | Fully awned |
| Code | Term | Description |
|---|---|---|
| 1 | Shorter | |
| 2 | Equal | |
| 3 | Longer |
| Code | Term | Description |
|---|---|---|
| 1 | Ovoid | |
| 2 | Medium oblong | |
| 3 | Narraw oblong |
| Code | Term | Description |
|---|---|---|
| 1 | Sloping | |
| 2 | Rounded | |
| 3 | Straight | |
| 4 | Elevated | |
| 5 | Elevated with a 2nd beak |
Legend:
Very narrow
Narrow
Medium
Broad
Legend:
Very short
Short
Medium
Long
Legend:
Absent
Weak
Moderate
Strong
| Code | Term | Description |
|---|---|---|
| 1 | White | |
| 2 | Light brown | |
| 3 | Medium purple | |
| 4 | Dark purple |
Legend:
Short
Medium
Long
| Code | Term | Description |
|---|---|---|
| 1 | White | |
| 2 | Slightly colored | |
| 3 | Strongly colored |
Legend:
Short
Medium
Long
| Code | Term | Description |
|---|---|---|
| 1 | Slightly elongated | |
| 2 | Moderately elongated | |
| 3 | Strongly elongated |