Insights on developing modern corn ecological breeding in southwest China

Based on the principle of interaction between genotype and environment (G × E), we analyze the ecological zoning characteristics of maize breeding in southwest China, the development demand of national economy, the development trend of maize industry, the change of breeding target demand, the innovation of breeding technology system and so on. We focus on the systematic summary and explanation of the connotation of maize ecological breeding in southwest China in the new period. Further condensed with "full attention and utilization of (G × E) interaction" as the core, "industrialization of breeding objectives, diversification of variety types, special identification of variety selection, regionalization of variety layout, and collectivization of variety promotion." the development concept of "modern ecological breeding" in Southwest corn region with the main content of "model of variety cultivation" systematically put forward the breeding goal of "low risk and high efficiency new hybrid" in the new period, wh