Nucleic acids and the encoded embryonic flower 2 (EMF2) polypeptides or Ubiquitin C-terminal Hydrolase 1 (UCHl-like) polypeptides are provided. A method of enhancing yield-related traits in plants by modulating expression of nucleic acids encoding EMF2 polypeptides or UCHl-like polypeptides is provided. Plants with modulated expression of the nucleic acids encoding EMF2 polypeptides or UCHl-like polypeptides have enhanced yield -related traits relative to control plants.