Phenotypes of the PGA1- and PGA2-knockdown plants. A, Flowers of the control plant. B, Flowers of the PGA1-knockdown plant (pKT226-35). C, Flowers of the PGA2-knockdown plant (pKT227-45). D, Sprouted potatoes of the PGA1-knockdown plant (pKT226-67, left) and control (right) 2 weeks after the cessation of plant dormancy in the control. E and F, Sprouted potatoes of the PGA1-knockdown plant (pKT226-67; E) and the PGA2-knockdown plant (pKT227-45; F) 3 months and 2 months after the cessation of plant dormancy in the control, respectively. G, Sprouted potatoes of the PGA1-knockdown plant (pKT226-67) 3 weeks after being planted into soil. The sprouted plants grew normally.