Data/hora: 11/06/2024 17:26:55

Provedor de dados: | 64
País: | Brazil
Título: | Resistance of tomato strains to the moth Tuta absoluta imparted by allelochemicals and trichome density
Autores: | Oliveira,Celso Mattes de; Andrade Júnior,Valter Carvalho de; Maluf,Wilson Roberto; Neiva,Irã Pinheiro; Maciel,Gabriel Mascarenhas.
Data: | 2012-02-01
Ano: | 2012
Palavras-chave: | Solanum lycopersicum; Genotypes; Breeding; Indirect selection.
Resumo: | We examined the resistance of improved tomato strains rich in 2-tridecanone (2-TD), zingiberene (ZGB) and acyl sugars (AA) to the tomato moth, Tuta absoluta. We also studied whether selection for strains with higher densities of glandular trichomes, and thus presumably strains with higher concentrations of 2-tridecanone, was effective in promoting greater resistance to the moth. The TOM-584 and TOM-679 strains were used as susceptible controls, which have normal concentrations of the three allelochemicals. The improved strain TOM-687, which has a high AA content, has a widely documented resistance and was used as a standard resistant strain. The wild strain PI134417, which is resistant by means of its high 2-TD content, was also used as a standard resistant strain. The experiment was installed in a greenhouse with a completely randomized design. The wild strain PI 134417 was confirmed as being highly resistant. TOM-622 (rich in 2-TD), ZGB-703 (rich in ZGB), and TOM-687 (rich in AA) showed significant reductions in the oviposition rate of the tomato moth, damage to the plants, injury to the leaflets, and the percentage of leaflets attacked in comparison with the control strains (TOM-584 and TOM-679). The levels of resistance to the moth for the TOM-622, ZGB-703, and TOM-687 strains were similar. In general, the genotypes with higher densities of glandular trichomes had greater resistance than the susceptible controls, with the strain BPX-367D-238-02 being particularly notable in its resistance.
Tipo: | Info:eu-repo/semantics/article
Idioma: | Inglês
Identificador: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-70542012000100006
Editor: | Editora da Universidade Federal de Lavras
Relação: | 10.1590/S1413-70542012000100006
Formato: | text/html
Fonte: | Ciência e Agrotecnologia  v.36 n.1 2012
Fonte: | info:eu-repo/semantics/openAccess