本研究基于GGE分析模型，对2023、2024年河南省新品种区域试验中连续参试两年的玉米新品种进行分析及综合评价。传统统计方法多聚焦于单一试验环境，在解析“基因型×环境”、“基因型×性状”互作效应时存在局限性，难以系统评价品种适应性与环境代表性，制约了试验数据的高效利用。本研究直观有效地评价了各试验环境、各参试品种的优异程度。结果发现，2023年区域试验中“Q2389”是许昌等试验点组成的同一生态区内，丰产性稳定性表现最优秀品种；2024年区域试验中“伟科905”是洛阳等试验点组成的同一生态区内，丰产性稳定性表现最优秀品种。本研究基于GYT双标图对参试品种进行综合排序，筛选出“Q2389”、“百玉8687”两个优秀的玉米新品种。本研究的参试品种与理想品种距离，除了综合当年参试品种在整体环境下的丰产性和稳产性，还结合了玉米产量相关的多个重要性状，对玉米新品种区域试验晋级审定工作具有较大利用价值。

This study employed the GGE biplot analysis model to analyze and comprehensively evaluate maize cultivars that participated in consecutive regional trials across two years (2023 and 2024) in Henan Province. Traditional statistical methods often focus on a single experimental environment, presenting limitations in analyzing the interaction effects of 'genotype × environment' and 'genotype × trait'. These limitations hinder the systematic evaluation of variety adaptability and environmental representativeness, thereby constraining the efficient utilization of experimental data. This study intuitively and effectively evaluated the superiority of various experimental environments and tested varieties, providing a comprehensive approach for assessing their performance in agricultural research. The results revealed that in the 2023 regional trial, ‘Q2389’ demonstrated superior yield stability within the same ecological zone encompassing test sites such as Xuchang. Similarly, ‘Weike 905’ emerged as the top-performing cultivar in terms of yield stability within the ecological zone including Luoyang test sites during the 2024 trial. Furthermore, through comprehensive ranking using the GYT biplot, this study identified ‘Q2389’ and ‘Baiyu 8687’ as outstanding new maize varieties. The analysis of cultivar distances from ideal genotypes incorporated not only overall yield and stability across environments but also multiple key traits associated with maize productivity. These findings hold significant practical value for advancing the evaluation and approval processes of new maize varieties in regional trials.

S513.037