EN
The aim of this work was the detection and identification of blueberry viruses in different blueberry cultivars grown in the central and south-east parts of Poland. The plant materials were analyzed by serological ELISA test. Blueberry scorch virus (BlScV), Blueberry shoestring virus (BSSV), Peach rosette mosaic virus (PRMV) and Tobacco ringspot virus (TRSV) were detected. Bundles of viruslike particles were observed in cytoplasm of BlScV infected material. The size of the particles was about 85 nm or more in length × 14 nm in diameter. The primer set RRSV3/RRSV4, which amplifies the fragment of the transcriptional activator gene was used in PCR for BRRSV detection. Sequencing analysis of the amplified products revealed 93–96% nucleotide sequence homology with the BRRSV-NJ putative transcriptional activator gene from the GenBank (Accession No. AF404509).