Pear protein fragment PyDwarf1-462 as well as coding sequence and application thereof

The invention discloses a pear protein fragment PyDwarf1-462. The pear protein fragment PyDwarf1-462 is a protein having an amino acid sequence represented by SEQ ID NO: 2 in a sequence table, or a protein obtained by substituting, deleting or adding one or more amino acid residues to the amino acid residue sequence represented by SEQ ID NO: 2, having the same activity as the amino acid residue sequence represented by SEQ ID NO: 2 and derived from SEQ ID NO: 2. The invention also discloses application of a coding sequence PyDwarf1-1389 of the pear protein fragment PyDwarf1-462. The pear protein fragment PyDwarf1-462 is transferred to a plant through a gene engineering technology, or a PyDwarf1-462 homologous gene sequence in the plant is mutated into a gene sequence having a PyDwarf1-462 coding product through gene mutagenesis or gene editing, so the height of the plant is effectively reduced. The gene is an endogenous gene existing in horticultural crop pears, and the homologous gene widely exists in differe