Fig. 8

Crude protein nutritional yield (CPNY, g ha− 1) on different water regimes during the 2021/22 season, error bars represent standard errors of the means. The letters above the error bars indicate significant differences (P < 0.0001). Well-watered = W1; moderate water stress = W2 and severe water stress = W3; Genotypes V1 = ENDURANCE, V2 = LINE 2.