Enhanced storage organ production in plants

A method for increasing the mass of a storage organ of a plant comprising tansforming the plant with at least one heterologous gene that encodes an enzyme that results in NAD(P)H consumption is disclosed. Preferably the method comprises transforming the plant with a gene that encodes an enzyme that is directly involved in NAD(P)H consumption. Such plants are characterized as having an increase in the mass of the storage organs. The enzymes include but are not limited to alcohol dehydrogenase, glutathione reductase, dehydroascorbate reductase, monodehydroascorbate reductase, mitochondrial alternative oxidase, NADH oxidase and NADPH oxidize. Vector and transformed plants are also disclosed.