Plants with improved yield-related traits and methods for their production

A method of enhancing yield-related traits in plants relative to control plants, comprising modulating expression of a nucleic acid encoding a HpaG polypeptide in a plant comprising: 23) with increasing preference at least 35%, 40%, 45%, 50%, 55%, 60%, 65%, 70%, 75%, 80%, 85%, 90%, 95% or more sequence identity to HpaG Polypeptide sequence according to SEQ ID NO: 2; and 24) an amino acid composition in which the glycine content is in the range of 13% to 25%, the glutamine content is 13% to 20%, the cysteine content is in the range of 0% to 1%, the histidine content is in the range of 0% to 1% % is and no tryptophan is present.