First report of Wisteria vein mosaic virus in China.

Wisteria mosaic is a common disease of Wisteria spp. in many regions of China. According to a recent survey, the incidence of this disease was about 40% on ornamental wisteria in gardens and courtyards in the Beijing area, China. In the most severely affected areas, about 80% disease incidence was recorded. In 2002, mosaic symptoms on W. sinensis were found on the west campus of China Agricultural University in Beijing. The symptoms included flecking, yellowing, vein clearing, mottling or mosaic on the leaves; similar to those of wisteria mosaic disease reported in other countries.