<;P>;PROBLEM TO BE SOLVED: To provide a new means for efficiently inhibiting the endogenous gene expression of rose family fruit trees such as apple or pear trees. <;P>;SOLUTION: The method for inhibiting the expression of an apple fruit tree endogenous gene includes: (1) inoculating a recombinant apple latent spherical virus (ALSV) containing the apple fruit tree endogenous gene on a proliferated host; (2) isolating the RNA from the proliferated host; and (3) inoculating the RNA on the cotyledon of a rosaceous fruit tree seedling just after rooted. <;P>;COPYRIGHT: (C)2010,JPO&INPIT