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Tomato (Lycopersicon esculentum Mill., Family: Solanaceae), a most
popular vegetable crop plant propagated by seed as well as
seedling. It is cultivated in both tropical and subtropical regions
of India. In South Gujarat condition tomato is the important
vegetable crop. Wilt of tomato caused by Fusarium oxysporum f.sp.
lycopersici (Sacc.) Synder and Hans., it is a serious problem in
South Gujarat which damaged the most of the important varieties.
Considering the seriousness of the disease, present investigation
was carried out. The pathogenicity of ten isolates collected from
different locations of South Gujarat from different varieties was
proved by the root dip inoculation technique. The cultures were
also tallied by cultural characters and microscopic observations.
On the basis of pathogenicity, cultural and morphological
characters, the pathogen identified as Fusarium oxysporum f.sp.
lycopersici (Sacc.) Synder & Hans. These ten isolates were
designated, as SGFOL (South Gujarat Fusarium oxysporum f.sp.
lycopersici, SGFOL-1 to SGFOL-10). There was a good deal of
variation in pathogenic, cultural, morphological and molecular
level within the isolates of the pathogen.
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