Radial abundance gradient measured in dex/R_e, d (left column panels) and dex/R_e, g (right column panels). Row a panels: radial abundance gradient as a function of the rotation velocity V_rot, row b panels: as a function of the stellar mass M_sp, row c panels: as a function of galaxy luminosity L_B, row d panels: as a function of optical radius R₂₅, and row e panels: as a function of the stellar mass M_ma. The grey points at each panel are the data for individual MaNGA galaxes from our sample, while the dark points are the binned mean values. The dashed line in the left and right column panels show the mean values of the gradient in units of dex/R_e, d and dex/R_e, g, respectively.