CEC, IBPGR. (1985). Descriptors for wheat (Revised). International Board for Plant Genetic Resources, Rome; Programme Committee on Disease Resistance Breeding and Use of Gene Banks, Brussels, Belgium.
Height of plant at maturity, measured from ground to the top of the spike. excluding awns
Counted as days from sowing to 50% of plants in flower. However, when planting in dry soils, in drland areas, it is counted from the first day of rainfall or irrigation which is sufficient for germination
See Figure 1, a visual measure of the density of a spike, measured on 1-9 scale. (spike density is not the same as spike shape)
observed on the outer glume
|2||Red to brown|
|3||Purple to black|
Measured on the outer side of sterile glume
The average number of spikelets per spike from five typical spikes selected from the growing accession.
The average number of seeds per spikelet, obtained from the central portion of the spike - using the five typical spikes coded in 4.2.6
If the is difficult to decide then the sodium hydroxide test can be used. Place grains in the petri-dish and add 25 ml of 5% solution NaOH for 60-90 minutes. Original red grains will be dark brownish orange. and white grains will be straw yellow.
See Figure 2.
Glass-like appearance. When seeds are transversely sectioned
Appearance during tillering, but before jointing
Subjective assessment of the tillers number per plant at low densities
Extent to which long days hasten flowering
Tendency of grains to sprout in the ear as a result of high moisture near to the harvest, recorded on 1-9 scale
Appearance of dry seeds after harvest
Measured as percentage of dry weight, (seed moisture equal to or less than 12%). Indicate the conversion factor used either N x 6.25 or N x 5.6
Percentage of lysine per per unit protein (absolute)
Performance in tests for making the the products listed below: (bread, pasta, biscuits)