基于GYT双标图分析对2020-2024年河南省审定大豆品种的分类评价OA

Henan province is one of the major summer soybean production areas in China.Scientific evaluation and classification of soybean varieties in Henan province contribute to the rational utilization of varieties and the improvement of soybean production levels of Henan.The comprehensive evaluation and classification were conducted based on genotype by trait(GT)and genotype by yield×trait(GYT)biplot analysis on the yield increase rate and the combination levels of traits such as growth period,plant height,height of bottom pod,100-seed weight,protein content,fat content,SC3 disease index and SC7 disease index among 77 soybean varieties approved in Henan province from 2020 to 2024.The results showed that the ranking of superiority index of 77 varieties was completely consistent with their rankings in the GYT biplot.And the 77 soybean varieties could be divided into 5 distinct types based on their characteristics.Among them,varieties of type Ⅲ had the best coordination between yield and traits and the highest production application value.Type Ⅱ exhibited the best combination of yield-agronomic traits and yield-quality traits but slightly poorer disease resistance.Type Ⅰ had relatively coordinated agronomic and quality traits but poorer disease resistance.Type Ⅳ showed better combination of yield and disease resistance but relatively poorer combinations of other yield-traits combinations.Type Ⅴ had the worst overall performance and the lowest production application value.Above results indicated that the GYT biplot analysis could reasonably evaluate and scientifically classify soybean varieties,which provided reference for the multi-trait evaluation of soybean varieties.