Stability Studies on Sewage Irrigation Effect on Grain Yield and Protein-content in Mungbean [Vigna radiata (L.) Wilczek

Tengenotypes of mungbean viz., Samrat (PDM139), Kopergaon, MUM 1, RMG 62, Phule M-2, Pusa 9531, Vamban 1, PDM 11, PDM 96–262, PDM 99–284, were evaluated in four environments i.e. plain water (E₁), sewage water(E₂), plain water+15 kgN/ha (E₃) and sewage water +15 kg N/ha(E₄). The stability parameters, mean value (x), regression coefficient (b_i) and deviation from regression (S²_di) were studied for yield per plant and protein content in various environments. In the study significant differences were observed for genotypes in different environments. Treatment E₁ gave the highest yield and E₃ gave the highest protein-content. Variety PDM 11 showed high mean values for yield per plant in treatment E1, followed by PDM 96262 and for protein-content. PDM 11 and Phule M-2 both were found highly significant, they were considered to be stable genotypes in different environment.