Stability and g x e interaction studies for grain yield and quality parameters in quality protein maize (qpm) (Zea mays l.) inbred line crosses

Studies on stability and G x E interaction were carried out at two locations (Hyderabad and Allahabad) and in two seasons (kharif 2003 and 2004) for grain yield and three quality parameters viz., protein content, oil content and tryptophan content in 45 single cross hybrids developed using 10x10 diallel set (excluding reciprocals). From this study, it was inferred that the three hybrids P₄ x P₇, P₂, x P₆, and P₅. x P₁₀. were considered as most stable for grain yield and quality parameters (protein, oil and tryptophan content) alongwith higher per se values for the four characters studied. Hcnte, it was suggested that these hybrids could be exploited as better QPM hybrids for commercialization across the wide environments through heterosis breeding and also for the derivation of QPM inbred lines in segregating generations.