Abstract
1. A white mosaic of tobacco was found in tobacco growing district near Hukuoka, which is different from JOHNSON's “white mosaic”.
2. This virus is infectious to most species of solanaceous plants, but no infection occurs on cucurbitaceous plants.
3. In general, the virulence of the virus is not so destructive, but petunia is retarded its growth severely.
4. Mottlings are produced when Nicotiana sylvestris is inoculated with the virus.
5. The present virus may be a strain of tobacco common mosaic virus (Nicotiana virus 1) which causes white mottlings on tobacco.
