Fig. 1. Detection of apple virus in potted apple by RT-PCR. (A) Selection of plants infected with the virus. M, size marker; lane 1, positive control (ACLSV: Apple chlorotic leaf spot virus, ASPV: Apple stem pitting virus, ASGV: Apple stem grooving virus, ASSVd: Apple scar skin viroid, ApMV: Apple mosaic virus, Nad5: Dehydrogenase subunit 5); lane 2-10, potted plants. (B) Position of sampling from the lateral shoots resulting from heat treatment