Pigeonpea 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 manual.
https://genebank.icrisat.org/IND/Char_Pigeonpea?Crop=Pigeonpea
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.
Pattern of growth habit
Vigour of plants recorded at 50% flowering, scored on 1-9 scale.
Thickness of main stem in millimeters, recorded at 50% flowering.
Color of stem recorded at the time of 50% flowering.
Color of the fully expanded leaf recorded at 50% flowering.
Mean length of five fully expanded middle leaflets on secondary branches of three representative plants, recorded in centimeters at 50% flowering.
Mean width of fully expanded middle leaflets on secondary branches of three representative plants, recorded in millimeters at 50% flowering.
Shape of fully expanded middle leaflet recorded at 50% flowering.
Hairiness of lower surface of leaflet recorded at 50% flowering.
Mean height of three representative plants measured in centimeters, recorded at maturity.
Mean number of branches on main axis of three representative plants, recorded at maturity.
Mean number of branches on primary branches of three representative plants, recorded at maturity.
Mean number of branches on secondary branches of three representative plants, recorded at maturity.
Number of days from sowing to when 50% of plants begin to flower in an accession.
Flowering pattern
Main color of standard petal recorded.
Color of streaks on dorsal side of the standard petal recorded.
Pattern of streaks on the dorsal side of the standard petal recorded.
Mean number of racemes per plant, recorded from three representative plants at time of 50% flowering.
Number of days from sowing to when 75% of plants reach maturity in an accession.
Main color of the pod recorded.
Mean distance in centimeters between lowest and topmost pod on the plant recorded at maturity.
Shape of matured pod recorded .
Hairiness of pod recorded.
Mean length of five mature pods, collected from three representative plants, recorded in centimeters at maturity.
Mean number of pods per plant harvested from three representative plants.
Mean number of seeds per pod, recorded from ten pods randomly picked from three representative plants.
Color pattern of seed coat, recorded after drying.
Main color of the seed coat recorded after drying.
Eventual other color on the seed coat, coded as primary color.
Width of color around hilum, recorded after drying.
Shape of the seed recorded after drying.
Presence or absence of strophiole recorded.
Weight of 100 seeds in grams measured using weighing balance scale, drawn from harvest of plot yield, at about 10% moisture content.
Seed pod ratio, expressed as a percentage based on weight from three representative plants after harvesting and drying.
Ratio of total seed yield to the total biological yield expressed as percentage recorded from three representative plants.
Color around hilum, recorded after drying, coded as primary color.
List of accessions included in the dataset