Journal of Agriculture and Food Science

The yield, stability and adaptability of new maize hybrids directly affect their popularization prospect and production. To evaluate the yield stability and adaptability of seven new maize varieties(ZuDan 709, ZuDan 712, WangYu 106, PengYu 169, LongRui 3138, XuanRui 902 and XuanRui 903), regional experiments were conducted in 9 middle and low altitude ecological areas of Yunnan Province. In this study, the methods of variance analysis, coefficient of variation analysis, high stability coefficient analysis, C.S.lin and AMMI biplot were used to comprehensively analyze the yield stability and adaptability of these new varieties. The results showed: XuanRui 903, PengYu 169, ZuDan 712 were superior varieties, which had outstanding and stable yield, strong production adaptability, and were suitable for spreading widely; Although WangYu 106 has good yield and adaptability, its stability need to be strengthened. This study This study clarified the yield and stability of the tested varieties in the middle and low altitude areas of Yunnan Province, and objectively screened out excellent hybrid maize varieties with both high and stable yields, which laid a theoretical and practical foundation for the ecological layout and variety promotion of plateau agriculture in Yunnan Province.

Maize hybrid; Yield; Stability; Adaptability; Yunnan Province