The present invention provides methods for identifying nucleic acid and polypeptide sequences which may be associated with a commercially relevant trait in plants, specifically, so-identified nucleic acids and polypeptide sequences for yield gene EG307. Sequences thus identified are useful in enhancing commercially desired traits in domesticated plants or wild ancestor plants, identifying related nucleic acid sequences, genotyping a plant, and marker assisted breeding. Sequences thus identified may also be used to generate heterologous DNA, transgenic plants, and transfected host cells.