“…In 1925, BYMV was detected on French beans in USA and Netherlands and currently it is distributed worldwide (Mohammad and Angela, 2004). In comparison with other potyviruses, BYMV has a relatively wide host range and many BYMV isolates differ in pathogenicity and serological properties (Wada et al, 2000). So far, the variability of BYMV in the Czech Republic has not been studied in spite of the different pathogenicity of detected BYMV isolates (unpublished results).…”