Roots and leaves are united integers, and larger roots can usu-ally support larger stems and leaves in plants. Sowing increased theshoot weight of Spartina alterniflora with increasing root weight(Hessini et al., 2009). Increased aboveground biomass and rootweight were observed in spring wheat planted in rain-fed farm-ing systems under irrigation (Song et al., 2009). Considering theshoot-to- root ratio, drought stress induced relatively large roots inrewatering plants compared with wet plants under drought stress.This phenomenon was beneficial for the growth of rewatered cornseedlings. Thus, the roots influenced compensatory growth uponpost-drought rewatering by inducing cytokinin.