Abstract

In an experiment conducted over three rabi environments, the genotypes E 36-1. Afzalpur local and AGP-280 proved to be more stable for grain protein content with their average response (b, 0.94, 1.108 and 1.18, respectively) and least mean square deviation (Sid -0.387. 0.181 and 0.29, respectively) with significantly higher grain protein content than the experimental mean (12.896%) among the 31 rahi sorghum genotypes, representing the locals of northern Karnataka and eight African germplasm lines obtained from ICRISAT. The genotypes RJ-16. SPV-488 and Bhogapur local had higher magnitude of b-values (>1.3) with more than 13.45 per cent grain protein content, indicating their suitability to high yielding conditions.

Keywords: Stability parameters, Grain protein content, G x E interaction