Environment effects for earliness and grain yield traits in F diallel populations of maize (Zea mays L.).

Background: Five maize inbred lines, 20 F diallel hybrids and two check genotypes were evaluated through genotype × environment interaction (GEI) and GGE biplot for earliness and yield traits at four locations.

Results: Genotype, environment and GEI showed highly significant differences for all the traits. In total sum of squares, environment and genotype played a primary role, followed by GEI.