FIGURE 2 Characteristics
and occurrence mechanisms of RCS in different cotton varieties after 15
days of drought stress. Statistical analysis of (A) the cortical
senescence percentage, (B) cortical cell files and (C) the cortical
lacunae area. DT type, Drought-tolerant type ”Guoxin 02”; DS type,
Drought-sensitive type ”Ji 228”; NS, no-stress; DS, drought stress; C,
varieties; D, drought. Error bars represent standard errors of the
means. Different lowercase letters in the figure indicate significant
differences between the same root segments from different cotton
varieties under drought stress treatments (p ≤ 0.05).P >0.05, no significance (ns); P <0.01 significant
difference (**).