Patent ID: 8227663

Claim:
A method for increasing seed yield in a plant, said method comprising expression of an isolated nucleic acid molecule encoding a cytokinin oxidase in a seedling or in the endosperm, embryo or aleurone of a plant seed, wherein the isolated nucleic acid molecule encoding a cytokinin oxidase is selected from the group consisting of: a nucleic acid molecule comprising the DNA sequence as given in SEQ ID NO: 47 or 48, or the complement thereof, b a nucleic acid molecule comprising the RNA sequences corresponding to SEQ ID NO: 47 or 48, or the complement thereof, c a nucleic acid molecule specifically hybridizing under high stringent conditions to SEQ ID NO: 47 or 48, or to the complement thereof, wherein the stringent conditions are hybridization at 4×SSC at 65° C., followed by a washing in 0.1×SSC at 65° C., d a nucleic acid molecule as defined in any of (a) to (c) characterized in that said nucleic acid molecule is DNA, genomic DNA, cDNA, synthetic DNA or RNA wherein T is replaced by U.