Agromorphological characterization and resistance evaluation to TYLCV in new tomato genotypes as a support to the breeding program for this disease
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Abstract
(Solanum lycopersicum L.) crop in Cuba and many other
countries is the tomato yellow leaf curl virus (TYLCV), a
Begomovirus from Geminiviridae family, which are transmitted
by the whitefly Bemisia tabaci (Genn.). At present, plant
breeding for disease resistance or tolerance constitutes one
of the most promising ways to reduce damages caused by this
virus, since most existing tomato seedlings are susceptible to
it. This study evaluated the agromorphological characteristics
and resistance to TYLCV of eight tomato genotypes
introduced in our country. From the agromorphologic
viewpoint, a phenotypical variability was detected in all
materials evaluated. Except the susceptible control, every
accession was asymptomatic to the virus; however, viral
concentrations were recorded just in some sampled plants of
these accessions.
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