FIGURE 8 Effects of drought stress on the aboveground traits of ”Guoxin 02” and ”Ji 228”. (A) Representative images of the growth of ”Guoxin 02” and ”Ji 228” at 0d, 5d, 10d, and 15d after drought stress. Statistical analysis of the (B) ratio of variable to maximum fluorescence (F v/F m), (C) leaf area, (D) leaf water potential, (E) steam diameter, (F) leaf water saturation deficit, (G) plant height, (H) relative water content, (I) SPAD value, (J) stomatal length, (K) stomatal width, (L) stomatal opening, and (M) stomatal density. DT type, drought-tolerant type ”Guoxin 02”; DS type, drought-sensitive type ”Ji 228”. CK, no-stress; DS, drought stress; C, varieties; D, drought. Error bars represent standard errors of the means. P >0.05, no significance (ns); P <0.01, highly significant difference (**). Different lowercase letters in the figure indicate significant differences among different varieties and treatments at the same time point (P ≤ 0.05).