Horticultura Brasileira (2004) 22, 193-196

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André Luiz Lourenção, Arlete M.T. de Melo, Walter José Siqueira, Addolorata Colariccio and Paulo César T. de Melo (2004)
Avaliação da resistência de acessos de tomateiro a tospovírus e a geminivírus
[Evaluation of tomato accessions for tospovirus and geminivirus resistance]
Horticultura Brasileira 22 (2), 193-196
Abstract: Thirteen lines and three commercial tomato cultivars were screened for tospovirus and geminivirus resistance under field conditions, in Campinas, São Paulo State, Brazil. The germplasm comprised advanced IAC lines plus cultivars Stevens, Franco and IPA-5. The same experiment was carried out in two planting seasons. In the first (December 2001 to February 2002), only Tomato chlorotic spot virus (TCSV) occurred in the field. In the second (July to September 2002), Tomato yellow vein streak virus (TYVSV) was identified in the experimental area, and the evaluation was carried out through counting of infected plants and by symptom intensity scoring by notes. There were no treatment differences by using the first criterion, but the score evaluation was effective in detecting differences among genotypes; line IAC-S3-16 showed an outstanding performance. Considering the two trials, the susceptibility of 'IPA-5' to both pathogens was confirmed; in addition, resistance of 'Franco' to TCSV and TYVSV was observed. Lines IAC-S3-54, IAC-S3-318, IAC-S4-39 and IAC-SVS-1 could be distinguished for the low infection by TCSV. So, these lines can be considered as promising genetic material to obtain cultivars with resistance to both viruses and good agronomic traits.
(The abstract is excluded from the Creative Commons licence and has been copied with permission by the publisher.)
(original language: Portuguese)
Full text of article
Database assignments for author(s): Addolorata Colariccio, André Luiz Lourencao

Research topic(s) for pests/diseases/weeds:
resistance/tolerance/defence of host

Pest and/or beneficial records:

Beneficial Pest/Disease/Weed Crop/Product Country Quarant.


Orthotospovirus tomatoflavi Tomato (Solanum lycopersicum) Brazil (south)
Tomato yellow vein streak virus Tomato (Solanum lycopersicum) Brazil (south)
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