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Abstract

As the primary multigrain crop in China, increased demand for sorghum poses great challenges to its high and stable yield. In this study, the stability and adaptation of seven sorghum varieties were assessed in seven sites over two years (2022-2023). ANOVA results showed that the yield, spike weight, plant height, and spike length were significantly different with respect to years (Y), environment (E), genotype (G), Y×E, Y×G, E×G, and Y×E×G, among which the average yield and spike weight were the most different among all varieties. The results of the GGE Biplot constructed using the first two principal components show that G2 varieties rank the highest in yield and spike weight and are the most stable, with obvious advantages over other varieties, and can meet the needs of growers. E1 and E6 were best represented in the seven sites and served as the best-identified sites in the sorghum regional trials.

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