I think, You can use qPCR primers and probe described in the publication (http://www.jmb.or.kr/journal/download.php?Filedir=../submission/Journal/020/&num=3762). Best reagards.
Aziz, RT-PCR alone will not be reliable identification for Rs. You should use all steps described by EPPO or APHIS protocols, like http://archives.eppo.int/EPPOStandards/PM7_DIAGNOS/pm7-21(1).pdf