Isolation of Bean Yellow Mosaic Virus From Broad Bean Plants in Libya

Abstract

Mosaic symptoms on broad bean plants have been observed in several fields around Tripoli. The virus is transmitted by mechanical inoculation and by the aphids Myzus persicae and Aphis crassivora. It infects only plants in the Leguminosae and Chenopo-diaceae. The TIP of the virus is between 62-64°C, the DEP is between 10-4 - 10~5 and the LIV is 8 days. The virus is antigenic and the antiserum titer is 1: 128. It has a serological relationship with bean yellow mosaic virus (BYMV) and pea seed-borne mosaic virus (PSBMV). On the basis of these results and those reported, it is concluded that the virus isolate in this study is most likely BYMV.