Corn transcription factor ZmbHLH167 and application thereof

The invention relates to a corn transcription factor ZmbHLH167 and an application of the corn transcription factor ZmbHLH167. A base sequence of the gene is shown as SEQ ID NO (sequence identifier number): 1. A corn immature embryo is transformed by taking a gene segment SEQ ID NO: 2 of the sequential coding protein ZmbHLH167 as guide RNA (ribonucleic acid) by use of a CRISPR (clustered regularly interspaced short palindromic repeats)-Cas9 technology, and a plant of a gene deletion mutant is obtained. Compared with a wild seed, a corn seed of the genetically modified mutant is smaller significantly, but a germination rate is not influenced. Biochemical analysis shows that a starch content of the corn seed of the genetically modified mutant is decreased obviously, a content of protein and total oil and fat is significantly increased, and a genetic resource is provided for creating high quality corn.