TY  - REP
AU  - Gildow,F.E.
AU  - Frank,J.A.
ED  - World Perspectives on Barley Yellow Dwarf International Workshop
TI  - Distribution of barley yellow dwarf virus isolates in Pennsylvania and the effect of the PAV isolate on yield of oats
SN  - 968-6127-39
U1  - 91-013904 
PY  - 1990///
KW  - America
KW  - Aphididae
KW  - Aphidoidea
KW  - Arthropoda
KW  - Avena
KW  - Biological properties
KW  - Disease transmission
KW  - Gramineae
KW  - Hemiptera
KW  - Homoptera
KW  - Insecta
KW  - Luteoviruses
KW  - Microbial properties
KW  - Middle atlantic states usa
KW  - North America
KW  - North eastern states usa
KW  - Pathogenesis
KW  - Plant diseases
KW  - AGROVOC
KW  - Plant viruses
KW  - Sternorrhyncha
KW  - USA
KW  - Viruses
N1  - 7 ref
N2  - From 1984 to 1986 isolates of barley yellow dwarf virus (BYDV) were identified in small grains collected from three cereals management regions of Pennsylvania. Of 300 plants, 82, 19, 9 and 4 were infected with isolates resembling PAV, RPV, MAV, and RMV, respectively, based on enzyme immunoassays and aphid transmission bioassay tests. Of these plants, 16 % were infected with two isolates, suggesting that infection resulted from inoculation by two aphid species, or by dependent virus transmission from doubly infected source plants. Only 5 % of 329 alate Rhopalosiphum padi (L.) and Sitobion avenae (Fabricius) collected in the field from
T2  - Burnett, P.A. (ed.). World perspectives on barley yellow dwarf. Mexico, DF (Mexico). CIMMYT. 1990. p. 383-386
ER  -