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| Coutinho, Ozimar de Lima; UFRR; Rego, Maílson Monteiro do; UFPB; Rego, Elizanilda Ramalho do; UFPB; Kitamura, Mario Couquiti; UFRR; Marques, Luciano Façanha; UFPB; Farias Filho, Leonildo de Paula; UFRR. |
| A murcha bacteriana, causada por Ralstonia solanacearum, é a principal doença vascular de plantas em todo o mundo. O agente causal é uma bactéria que ocorre em todas as regiões do Brasil, predominando em condições de umidade e temperatura elevadas, fatores propícios ao desenvolvimento do patógeno. Este agente causal é de difícil controle, pois sobrevive nos mais diversos hospedeiros, especialmente Solanaceas, além de outras famílias de importância alimentar, condimentar e medicinal. O uso de espécies do gênero Solanum na enxertia convencional e minienxertia em tomateiro Lycopersicon esculentum é limitada em função da incompatibilidade. Neste trabalho, utilizou-se o método da microenxertia para obtenção de plantas resistentes a doenças como a murcha... |
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Palavras-chave: 5.01.00.00-9 Agronomia Solanaceae; Murcha bacteriana; Ralstonia solanacearum; Micropropagação; Cultura in vitro 5.01.03.05-9; Solanaceae; Bacterial wilt; Ralstonia solanacearum; Micropropagation; In vitro culture. |
| Ano: 2010 |
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/968 |
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| Silveira,José R.P.; Duarte,Valmir; Moraes,Marcelo G.; Lopes,Carlos A.; Fernandes,José M.; Barni,Valmor; Maciel,João L.N.. |
| The objectives of this study were to evaluate the progress of Ralstonia solanacearum bacterial potato wilt biovar 2 (race 3) in 14 potato (Solanum tuberosum L.) cultivars or clones, the resistance of potato clone MB 03 (selected in Brasília, Brazil) to race 1 of R. solanacearum, and the occurrence of the pathogen in tubers harvested from asymptomatic potato plants. During the spring (September to the end of November in the southern hemisphere) of 1999 and 2000, 14 cultivars or clones were grown in a field naturally infested with R. solanacearum biovar 2, in Caxias do Sul, RS. The number of wilted potato plants was recorded each week and a disease progress curve plotted, the resistance of the potato genotypes to bacterial wilt being evaluated by determining... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Bacterial wilt; Disease progress; Latent infection; Logistic; Monomolecular; Gompertz. |
| Ano: 2007 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-41582007000300001 |
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| Maketon,Monchan; Apisitsantikul,Jirasak; Siriraweekul,Chatchai. |
| Two biological control agents, Bacillus subtilis AP-01 (LarminarTM) and Trichoderma harzianum AP-001 (TrisanTM) alone or/in combination were investigated in controlling three tobacco diseases, including bacterial wilt (Ralstonia solanacearum), damping-off (Pythium aphanidermatum), and frogeye leaf spot (Cercospora nicotiana). Tests were performed in greenhouse by soil sterilization prior to inoculation of the pathogens. Bacterial-wilt and damping off pathogens were drenched first and followed with the biological control agents and for comparison purposes, two chemical fungicides. But for frogeye leaf spot, which is an airborne fungus, a spraying procedure for every treatment including a chemical fungicide was applied instead of drenching. Results showed... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Biological control; Tobacco diseases; Bacterial wilt; Damping off; Frogeye leaf spot. |
| Ano: 2008 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822008000200018 |
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| Soares,Renato Silva; Ribeiro,Cláudia Silva da Costa; Ragassi,Carlos Francisco; Lopes,Carlos Alberto; Carvalho,Sabrina Isabel Costa; Reis,Ailton; Braz,Leila Trevisan; Reifschneider,Francisco José Becker. |
| ABSTRACT Habanero pepper is important in the international market and is becoming popular in the national market; however, few cultivars adapted and resistant to devastating diseases caused by the soilborne pathogens Ralstonia pseudosolanacearum (RP) and Phytophthora capsici (PC) are available in Brazil. The aim of this study was to evaluate the reaction of Habanero-type advanced inbred lines, developed by Embrapa Hortaliças breeding program, to RP and PC. Although not required for the process of protection, registration and release of new cultivars, this information is important. CNPH 15.737; CNPH 15.740; CNPH 15.744; CNPH 15.745; CNPH 15.749 and CNPH 15.750 were inoculated with three RP and one PC isolates. Plants showing wilted leaves (RP) and stem... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Capsicum; Bacterial wilt; Phytophthora wilt; Incidence; Severity index; Resistance. |
| Ano: 2019 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-05362019000400395 |
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| Pontes,Nadson C; Fujinawa,Miriam F; Oliveira,José R. |
| ABSTRACT The efficacy of five selective media described in the literature for the detection of Ralstonia solanacearum in soil was evaluated using isolates from different regions of Brazil. The selective media were evaluated regarding their sensitivity, target-pathogen repression index, capacity for suppressing contaminating microorganisms and recovery rate of the pathogen in soil. No bacterial growth was observed at the concentrations tested for FSM and SM-1 media. Some isolates grew on the PCCG medium with the addition of antimicrobial agents, but only at concentrations of 106 cfu/mL. For the SM and SMSA-E media, adequate sensitivity for the detection of R. solanacearum in soil was observed, enabling detection at a concentration of approximately 103... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Bacterial wilt; Culture medium; Diagnosis; SMSA-E.. |
| Ano: 2017 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-05362017000100041 |
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