حصر الفيروسات المنقولة ببذور العدس في مناطق زراعته الرئيسية في سورية و دراسة مدى تأثيرها في الإنتاج

A total of 16l lentil fields in the northern, southern, central, northeastern and coastal regions of Syria were surveyed during 1990191, l99ll92 and 1992193 cropping seasons to determine the presence of seed-borne viruses. Two hundreds lentil seedlings were collected from each field, and were divided into groups of 25 seedlings each. ELISA tests revealed the presence of pea seed-borne mosaic virus (PSbMV) in 0.61% of samples collected from southern grovernorates only. Broad bean stain virus (BBSV) was detectedin 56l16l fields: l0/30, 15152,5131. 24129 and 2/10 with disease incidence of 0.49, 0.63, 0.42 3.35 and 0.37 % in northern, southern, central, northeastern and coastal regions, respectively. Infection with BBSV at pre-flowering, flowering and post flowering (podding) stages led to a yield loss of 24,31 and 25o/o and seed transmission rates of 20.57, 19.11 and 1.500 , respectively. Like-wise, infection with PSbMV at the above three growth stages led to a yield loss of 28,27 and 23% and seed transmission rates of 2.21,1.50 and 0.41% respectively.