Horticultura Brasileira (2012) 30, 639-644

Francisco D. Hurtado, Marta A. Gil, Yamila M. Zubiaur, Jorge G. Aguilera, César Augusto D. Xavier, Francisco Murilo Zerbini Junior and Derly Jose H. da Silva (2012)
Fontes de resistência em tomateiro aos begomovírus bissegmentados Tomato yellow spot virus e Tomato severe rugose virus
[Sources of resistance in tomato to bipartite begomoviruses Tomato yellow spot virus and Tomato severe rugose virus]
Horticultura Brasileira 30 (4), 639-644
Abstract: Begomoviruses cause diseases of major economic importance in many crops, especially in tropical and subtropical regions. Together with other families of viruses, the begomoviruses cause great damage for producers of fresh and processed tomatoes. The objective of this study was to evaluate the behavior of 11 resistant genotypes to Tomato yellow leaf curl virus (TYLCV) when infected by the begomoviruses Tomato severe rugose virus (ToSRV) and Tomato yellow spot virus (ToYSV) under greenhouse conditions. Tomato plants were inoculated by biobalistic method when displaying two true leaves. Viral infection was confirmed by visual observation of symptoms and by dot blot hybridization. Genotypes STY2, STY5, STY6 and L7 were selected as promising due to the absence of symptoms and very low viral concentration for both viruses. The resistance genes Ty-1 and Ty-2 were not effective against the viral species used in the study. The lines TY52, H24 and CLN2116B, carrying these genes, exhibited a susceptible behavior.
(The abstract is excluded from the Creative Commons licence and has been copied with permission by the publisher.)
(original language: Portuguese)
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Research topic(s) for pests/diseases/weeds:
resistance/tolerance/defence of host

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Pest and/or beneficial records:

Beneficial	Pest/Disease/Weed	Crop/Product	Country	Quarant.
	Tomato severe rugose virus	Tomato (Solanum lycopersicum)	Brazil (south)
	Tomato yellow spot virus	Tomato (Solanum lycopersicum)	Brazil (south)