Reactive oxygen species (ROS), especially hydrogen peroxide, H2O2, act as signaling molecules to widely mediate growth, development, and stress response of plants. In the present study, internal ROS accumulation, effects exogenous H2O2 treatment, expression key tuberization-related genes, effect knockout Solanum tuberosum self-pruning 6A (StSP6A) on H2O2-induced tuber formation were investigate...