Abstract
Yam mild mosaic virus (YMMV) was detected by RT-PCR from Dioscorea alata plants infected with Japanese yam mosaic virus (JYMV). The infection with YMMV was further comfirmed by nucleotide sequencing of the 3'-terminal region of the virus. RT-PCR assay for 52 D. japonica, 39 D. opposita, 9 D. alata plants with virus-like symptoms indicated that YMMV and JYMV were detected, but Yam mosaic virus was not detected from yam plants in Japan.
