Sorghum Characterization
The characterization of germplasm is essential for its effective use in crop improvement. Phenotypic characterization involves recording traits that are highly heritable, easily observable, and consistently expressed across different environments. The ICRISAT germplasm accessions are characterized at the Patancheru location in India (Latitude: 17.51° N, Longitude: 78.27° E, Altitude: 545 m). The descriptors developed for characterization and preliminary evaluation are followed for each crop assessed. Detailed crop-specific characterization information can be found in the ICRISAT Genebank Technical Manual.
https://genebank.icrisat.org/IND/Char_Sorghum?Crop=Sorghum
The characterization of germplasm is essential for its effective use in crop improvement. Phenotypic characterization involves recording traits that are highly heritable, easily observable, and consistently expressed across different environments. The ICRISAT germplasm accessions are characterized at the Patancheru location in India (Latitude: 17.51° N, Longitude: 78.27° E, Altitude: 545 m). The descriptors developed for characterization and preliminary evaluation are followed for each crop assessed. Detailed crop-specific characterization information can be found in the ICRISAT Genebank Technical Manual manual.
Race
Measured from ground level to the tip of the panicle of the main tiller for each plant at dough stage
Measured from ground level to the tip of panicle of the main tiller for each plant at dough stage.
Stem and plant pigmentation is observed visually at maturity stage.
Count the number of basal tillers including main plant at dough stage. Five randomly selected competitive plants are used for taking observation.
Presence or absence of nodal tillers at maturity
Color of the midrib is observed visually at flowering stage. Middle leaves of main axis are observed.
Days from the first irrigation after sowing until 50% of plants flower are recorded as days to 50% flowering. Anther emergence on the main panicles of the primary tiller marks the beginning of flowering.
The days from the first irrigation after sowing until 50% of the plants flower in an accession are recorded as days to 50% flowering. Anther emergence on the main panicles of the primary tiller is defined as flowering.
Length of the peduncle from ligule flag leaf to base of inflorescence, measured at dough stage. Five randomly selected competitive plants are used for taking observation.
Length of the panicle from base to the tip, measured at dough stage. Five randomly selected competitive plants are used for taking observation.
Measured at the widest portion of the panicle at natural position at dough stage. Five randomly selected competitive plants are used for taking observation.
Shape of inflorescence is recorded visually at maturity.
Color of the seed covering structures at maturity.
Percentage of seed covered by glumes at maturity.
Color of the seed covering structures at maturity.
Shininess of seed recorded.
Width of the seed at the broadest point is recorded using Vernier scale.
Weight of 100 seeds at 12% moisture content.
Texture of endosperm visually observed.
Ease with which seeds can be separated from the panicle while threshing.
List of accessions included in the dataset