A Study on Genotype-by-Environment Interaction Analysis for Agronomic Traits of Maize Genotypes Across Huang-Huai-Hai Region in China

Facing the trend of increasing population, how to increase maize grain yield is a very important issue ensure food security. In this study, 28 nationally approved hybrids were evaluated across 24 different climatic conditions for two consecutive years (2018–2019). The purpose study was select high-yield with stable genotypes and identify agronomic traits breeding program improvement. results showed that genotype ╳ environment interaction effects 12 highly significant (P < 0.001). We introduced novel multi-trait genotype-ideotype distance index (MGIDI) based on multiple traits. selection process exhibited by method unique easy understand, so MGIDI will have more applications in future multi-environment trials (METs) research. selected G22, G10, G12 G1 as high yielding genotypes. parents these ability play greater role basic germplasm process. A new form (G) main -by-environment (E) (GGE) technician, genotype*yield*trait (GYT) biplot, also applied study. GYT biplot ranked combining other traits, displayed distribution their namely strengths weaknesses.