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Seed Transmission Of Cucumber Mosaic Virus In Lentil Seeds In
Syria
K. Makkouk, N. Attar and S. Kumari
Virology Laboratory,
Germplasm Program, International Center for Agricultural Research in the Dry
Areas (ICARDA), P.O. Box 5466, Aleppo, Syria
E-mail: K.Makkouk@cgiar.org
Abstract
Twenty-two lentil genotypes obtained from ICARDA Gene-Bank were evaluated for
their reaction to a Syrian isolate of Cucumber mosaic virus (CMV, genus:
Cucumovirus, family: Bromoviridae) (SV36-86), and their ability to
transmit it through their seeds. Plants were mechanically inoculated under field
conditions with CMV at the early flowering and early podding stages during
2000/2001 growing season, and at the flowering stage during 2001/2002 growing
season. Randomized samples (100 and 200 samples/genotype) were tested for CMV by
Tissue-blot immunoassay (TBIA), three weeks after inoculation, during the two
growing seasons. Results showed that CMV infection level was 7.4-35.8% in
2000/2001 and 7.0-64.2% in 2001/2002. When germinating embryo axes of seeds
collected from CMV infected lentil mother plants were tested for the presence of
CMV in groups of 20 seedlings each by the TBIA, the seed transmission rate of
CMV was in the range of 0.9-9.5% in 2000/2001 and 0.1-1.7% in 2001/2002, in the
genotypes evaluated. This is the first report of transmission of CMV in lentil
seeds under Syrian conditions
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