Stability Analysis for Quality Traits in Maize (Zea mays L.)

Fifty five genotypes consisting of 10 parents and 45 hybrids were evaluated under four environments to test their stability. Variance due to genotype, environments and genotype x environments interaction were found significant for oil content, protein content, tryptophan content and lysine content. Among the hybrids, GWQPM 5–1 x GWQPM 40-3 and GWQPM 5–1 x GWQPM 17-1 were found stable for protein content as well as tryptophan content under the wide range of environments. Hybrid GWQPM 40-3 x GWQPM 26-3 for protein and lysine content found stable for all the environments. For oil content hybrid GWQPM 55-2 x GWQPM 46-2 had high per se performance. The hybrids GWQPM 5–1 x GWQPM 40-3, GWQPM 5–1 x GWQPM 17-1 and GWQPM 40-3 x GWQPM 26-3 appeared promising for protein, tryptophan and lysine content.