Variability of Bean yellow mosaic virus isolates in the Czech Republic.

Three isolates of Bean yellow mosaic virus (BYMV) from the Czech Republic originating from gladiolus plants were examined according to their biological and molecular characteristics. Partial sequence of coat protein-nuclear inclusion protein b (CP-NIb) coding region (768 bp) of these isolates were determined and compared with the corresponding sequences of different BYMV isolates obtained from GeneBank. Phylogenetic analysis showed that the Czech BYMV isolates were distributed across the three groups of phylogenetic tree. Their placement was not dependent on the geography or host plant.