The present invention relates to a method for improving yield-related traits in plants by modulating expression in a particular type of NAC transcription factors plant. Certain types of NAC transcription factors are NACs comprising the amino acid sequence shown in any of than the other NAC group SEQ ID NO: 2, SEQ ID NO: 51, SEQ ID NO: 53, SEQ ID NO: 55, SEQ ID NO: 57 or SEQ ID NO: 59 when using the construction NAC phylogenetic tree those having an amino acid sequence which tends to group the clusters. The present invention also relates to the plant according to the expression control of a plant a nucleic acid encoding the NAC transcription factor has an increased yield compared to the control plants. The present invention relates to a method for improving yield related traits of a plant by further AP2-2 control the expression in plants of nucleic acid encoding the polypeptide. The present invention also relates to the plant according to the expression control of a plant a nucleic acid encoding a polypeptide AP2-2 has an improved yield-related trait as compared to the control plants. The present invention relates to a process for further improving the yield-related traits in plants by modulating the APETELA2-70- similar (AP2-70- similar) expression in a plant of a nucleic acid encoding the polypeptide. The invention also relates to the expression control of a plant a nucleic acid encoding a polypeptide AP2-70- similar, the plant has an increased yield-related trait as compared to the control plants. The invention also provides a construct comprising a nucleic acid, and the nucleic acid to perform the method of the present invention useful, encoding the NAC, AP2-2 and AP2-70- similar to hitherto unknown. The invention also provides constructs useful in the methods of the present invention.본 발명은 특정 유형의 NAC 전사인자의 식물에서의 발현을 조절함으로써 식물의 수확량 관련 형질을 향상시키는 방법에 관한 것이다. 특정 유형의 NAC 전사인자는 NAC 계통수 구축에 사용 시 임의의 다른 NAC 그룹보다는 서열번호 2, 서열번호 51, 서열번호 53, 서열번호 55, 서열번호 57 또는 서열번
