TY  - REP
AU  - Rybicki,E.P.
AU  - Wechmar,M.B.von
AU  - Williamson,C.
ED  - World Perspectives on Barley Yellow Dwarf International Workshop
TI  - Characterization of South African isolates of barley yellow dwarf virus
SN  - 968-6127-39
U1  - 91-013832 
PY  - 1990///
KW  - Acids
KW  - Africa
KW  - Africa south of Sahara
KW  - Alkali metals
KW  - Anglophone africa
KW  - Aphididae
KW  - Aphidoidea
KW  - Arthropoda
KW  - Disease transmission
KW  - Elements
KW  - Hemiptera
KW  - Homoptera
KW  - Inorganic acid salts
KW  - Insecta
KW  - Luteoviruses
KW  - Metallic elements
KW  - Nucleic acids
KW  - Nucleic compounds
KW  - Organic acids
KW  - Pathogenesis
KW  - Pests of plants
KW  - Plant diseases
KW  - AGROVOC
KW  - Plant viruses
KW  - Proximate composition
KW  - Salts
KW  - Southern Africa
KW  - Sternorrhyncha
KW  - Viruses
N1  - 19 ref
N2  - A detailed characterization of two South African isolates is given. One isolate is transmitted by Schizaphis graminum (Rondani) and is SGV-like. The other is transmitted by Rhopalosiphum padi (L.) and Diuraphis noxia (Mordvilko), and is related to PAV-like isolates. The latter has isometric particles 25 + 0.8 nm in diameter and apparent buoyant density of 1.435 g/cm3 in cesium chloride and a protein of Mr 24.5 kDa that degrades to 22.5 kDa on storage. It also contains ssRNA of Mr 1.8 MD and produces dsRNA of Mr 1.8 MD and produces dsRNA of Mr 3.4 MD in infected plants. Both isolates appear relatively vector nonspecific
T2  - Burnett, P.A. (ed.). World perspectives on barley yellow dwarf. Proceedings. Mexico, DF (Mexico). CIMMYT. 1990. p. 123-127
ER  -