Stability analysis for economic traits in blond psyllium (Plantago ovata Forsk.)

Abstract

Stability analysis was carried out with thirty six genotypes of isabgol (Plantago ovata Forsk) under three environments to identify stable genotypes that could be cultivated uniformly under varied environmental conditions for yield and yield attributing traits. Pooled analysis of variance for stability indicated that all the genotypes of isabgol were highly significant for all the characters indicated that materials selected possessed sufficient genetic variation for all the traits studied. Mean squares arising due to genotype, G x E interaction and E + (G x E) were found significant for all the traits. Sufficient genotype x environment (linear) were exhibited by all the genotypes for all characters. The genotype RI-158 was superior in per se performance and stability for seed yield suggesting its suitability for inclusion in future breeding programme for development of stable variety. The genotypes, namely, RI- 138, RI-3004, RI-166, RI-155, RAUI-Ja-2, RAUI-Ja-3, RAUI-B, RI-89, HI-2, GI-4 and Niharika were found suitable for high yielding environments, while genotypes, GI-2, RI-1(9808) and RI-142 were best in poor environments for seed yield.