Plants having enhanced yield-related traits and/or increased abiotic stress resistance, and a method for making the same

A method for producing a plant having increased biomass and/or seed yield under conditions of reduced nitrogen availability relative to a corresponding control plant, comprising:

• 1) transforming a plant with a construct comprising:
• (a) a nucleic acid encoding a NAP1-like polypeptide comprising a NAP domain which comprises the amino acid sequence of SEQ ID NO:
• 33 and SEQ ID NO:
• 34;
• (b) one or more control sequences capable of driving expression of the nucleic acid (a);
• and optionally
• (c) a transcription termination sequence,
• wherein one of the control sequences is a constitutive promoter, and
• wherein the nucleic acid encoding a NAP1-like polypeptide comprises
• (i) a nucleic acid sequence encoding a polypeptide comprising an amino acid sequence having at least 80% sequence identity to the amino acid sequence of SEQ ID NO:
• 2;
• or
• (i) a nucleic acid sequence capable of hybridising with the complementary nucleotide sequence of the nucleic acid sequence of SEQ ID NO:
• 1, under stringent hybridization conditions comprising hybridization at 65° C. in 1×SSC or at 42° C. in 1×SSC and 50% formamide, followed by washing at 65° C. in 0.3×SSC;
• and
• 2) selecting for a plant having increased biomass and/or seed yield under conditions of reduced nitrogen availability relative to a corresponding control plant.