Five popular varieties of sunflower (Helianthus annuus L.) evaluated for 5 seasons from Kharil, 1970 to Rabi, 1974-75 under semi-arid conditions of Western Rajasthan were studied for stability parameters. The analysis of variance revealed significant differences due to genotypes and environments. Significant genotype-environment (interactions both, linear and genotype environment) (linear) indicated that varieties performed differently in varying environments. EC 68415 gave the highest mean seed yield, showed specific adaptation to favourable environments and was stable, EC 68413 exhibited above average performance but expressed better response to average environments and stability. EC 68414. EC 69874 and Sun-rise Sel recorded below average performance and better response to poor environments. EC 68414 and EC 69874 were stable whereas Sun-rise Sel was unstable. The stability parameters Viz. X and bi were significantly and positively correlated with each other.
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