caa a22 4500 465725295 CHVBK 20180323111727.0 cr unu---uuuuu 170327e19900901xx s 000 0 eng 10.1071/APP9900090 doi (NATIONALLICENCE)springer-10.1071/APP9900090 Occurrence of barley yellow dwarf viruses in over-summering grasses and cereal crops in Western Australia [Elektronische Daten] [R. Jones, S. McKirdy, R. Shivas] During summer and early autumn in 1989, barley yellow dwarf viruses (BYDV) were detected by ELISA in grasses collected at 72 sites in the south-west of Western Australia. Most of the grasses sampled survived the dry conditions in roadside ditches or at the edges of creeks. BYDV was found at ten or more sites in each of five perennial species, Cynodon dactylon, Ehrharta calycina, Eragrostis curvula, Paspalurn dilatatum and Pennisetum clandestinum, and in one summer annual, Digitaria sanguinalis. PAV and RPV were detected at 71% and 86% of infected sites, respectively. During the late winter and early spring in 1989, BYDV was detected in 52% of cereal crops (oats, barley and wheat) sampled in the south coastal region of Western Australia, with >5% infection being recorded in 10% of crops. Highest levels of infection within crops (up to 26%) were found in the Albany and Jerramungup districts. By contrast, the virus was found in only 29% of cereal crops sampled from the western parts of the southern wheat belt where only one crop had >2% infection. When some of the BYDV-infected cereal samples were retested, PAV and RPV were detected in 65% and 39010, respectively. Australasian Plant Pathology Society, 1990 Jones R. Plant Pathology Branch, Department of Agriculture, Baron-Hay Court, 6151, South Perth, Western Australia aut McKirdy S. Plant Pathology Branch, Department of Agriculture, Baron-Hay Court, 6151, South Perth, Western Australia aut Shivas R. Plant Pathology Branch, Department of Agriculture, Baron-Hay Court, 6151, South Perth, Western Australia aut Australasian Plant Pathology Springer Netherlands 19/3(1990-09-01), 90-96 0815-3191 19:3<90 1990 19 13313 https://doi.org/10.1071/APP9900090 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1071/APP9900090 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Jones R. Plant Pathology Branch, Department of Agriculture, Baron-Hay Court, 6151, South Perth, Western Australia aut NATIONALLICENCE 700 1- McKirdy S. Plant Pathology Branch, Department of Agriculture, Baron-Hay Court, 6151, South Perth, Western Australia aut NATIONALLICENCE 700 1- Shivas R. Plant Pathology Branch, Department of Agriculture, Baron-Hay Court, 6151, South Perth, Western Australia aut NATIONALLICENCE 773 0- Australasian Plant Pathology Springer Netherlands 19/3(1990-09-01), 90-96 0815-3191 19:3<90 1990 19 13313 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer