Fig. 5

The relative expression levels of SsCBL genes measured by RT-qPCR under low K⁺ stress in the sugarcane hybrid YT55. The relative expression level was shown as the mean of three biological replicates and three technical replicates, * and ** respectively represent a significant difference at p ≤ 0.05 and p ≤ 0.01 based on Student’s t-test