Black-Streaked Dwarf Virus
Symptoms: Stunting or dwarfing occurs, particularly
if plants are infected in the seedling stage. Symptoms on pearl
millet are not well documented. On maize, white waxy swellings
occur on veins. Foliage is dark green with chlorotic streaks,
and there is splitting of leaf margins (McGee
1988).
Pathogen and disease characteristics: Belongs to the
Reoviridae fijivirus group (Park et al.
1994). Isometric particles are 75-80 nm in diameter (McGee
1988). Transmission occurs persistently by planthoppers.
Host range: Pearl millet, maize, rice, finger millet,
barnyardgrass, Isachne globosa, barley, wheat, barnyard
millet, Digitaria sanguinalis (Choi
et al. 1989a,b), rye (McGee 1988).
Geographic distribution: South Korea, Japan (on maize).
Nomenclature discrepancies: Alternative disease names:
Maize streaked dwarf, rice black-streaked dwarf.
Seed transmission: Not described in the literature.
Probably not transmitted by seed (B.H. Choi, personal communication,
1995).
Primary citations: As above.
United States
Department of Agriculture
Agricultural
Research Service
The material on this page is in the public
domain.
Original posting: June 5, 1999.
|
Printable Version
E-mail this page
