Detection of Apple chlorotic leaf spot virus in Pear by in situ RT-PCR Sequence analysis of partial CP gene and 3′-terminal UTR of Apple chlorotic leaf spot virus isolates from sand pear and peach Molecular diversity of three Apple chlorotic leaf spot virus isolates from XinJiang An efficient TaqMan real-time RT-PCR assay for detecting Apple chlorotic leaf spot virus (ACLSV) Detection of Apple chlorotic leaf spot virus in Pear by Primed in situ Labeling