STABILITY ANALYSIS FOR GRAIN YIELD AND ITS ATTRIBUTING TRAITS IN COLOURED PERICARP SORGHUM (SORGHUM BICOLOR (L.) MOENCH).
Keywords:
Sorghum; Rabi sorghum; Coloured pericarp; Grain yield; Yield-attributing traits; Stability analysis; Eberhart and Russell model; Genotype × environment interaction; Stable genotypes; High-yielding genotypes; Randomized block design; multi-environment evaluationAbstract
Understanding the stability of grain yield and yield-attributing traits is critical for sorghum improvement under variable agro-ecological conditions. Twenty-one coloured pericarp sorghum genotypes were evaluated across three rabi environments—Parbhani, Basmathnagar, and Nanded—during 2022–23 using a randomized block design with two replications. Stability parameters were analysed according to the Eberhart and Russell (1966) model. Significant genotypic and environmental differences were observed for all yield traits. GP 40053-1-2 exhibited high grain yield and stable performance across environments, whereas IS 23891 and ISSVT 102 showed high yield potential. Genotypes GP 3138 and ISSVT 102 performed better under poor environments, while ICRISAT 409 and YPT 1007 performed better under favourable environments. The study identifies superior and stable genotypes suitable for rabi sorghum improvement.
