Genotype-by-environment interaction and yield stability for grain yield of quality protein maize hybrids under low and optimum soil nitrogen environments

Maize (Zea mays L.) yield performance is determined by the effects of genotype and environment, × environment interaction (GEI). A complete diallel crosses 11 QPM inbred lines were evaluated under both low optimum soil nitrogen environments to identify high grain stability single-cross hybrids in six environments. The results analysis variance showed that variations among attributable genotypes (G), (E), interactions (GEI) significant for yield. result AMMI was significantly affected environments, GEI across GGE biplot sum first second principal component axes explained 61.66% total variation. Genotype TL156583 TL156612 identified as best less stable than MHQ138 which poorest but all value TL155976 TL156583, TL155932, TL156579 genotypes, VL05128, TL147078, unstable ones. GGE-biplot VL05128 be winner E6 (Dire-Dawa N) whereas TL148288 E2 (Raare E5 N). won E1