Reação em campo à murcha bacteriana de cultivares de tomate em Roraima

Lima, Hyanameyka Evangelista de; Rêgo, Elizanilda Ramalho do; Cavalcante, Gilcianny Pignata; Rêgo, Maílson Monteiro do; Cota, L. V.

doi:10.1590/s0102-05362010000200016

Cited by 6 publications

(5 citation statements)

References 9 publications

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“…Thus, the evaluation of quantitative parameters, such as disease severity, is efficient for classifying cultivars based on their susceptibility or resistance to a pathogen (JEGER; VILJANEN- ROLLINSON, 2001). This has already been proven for some tomato bacterial diseases, such as bacterial spot (Xanthomonas vesicatoria) (LOBO; LOPES; GIORDANO, 2005) and bacterial wilt (Ralstonia solanacearum) (LIMA et al, 2010), and for bacterial speck (Pst) (SHENGE; MABAGA; MORTENSEN, 2007) and bacterial blight (Pc) (SILVA JÚNIOR et al, 2009b), the objectives of this study.…”

Section: Discussionmentioning

confidence: 83%

CRESCIMENTO MICELIAL DE Stemphyllium SP. AGENTE ETIOLÓGICO DA QUEIMA DE ESTNFÍLIO NA CULTURA DA CEBOLA (Allium cepa) EM DIFERENTES MEIOS DE CULTURA

Neves¹,

Pereira²

2020

Aspectos Fitossanitários Da Agricultura

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Todo o conteúdo deste livro está licenciado sob uma Licença de Atribuição Creative Commons. Atribuição 4.0 Internacional (CC BY 4.0). O conteúdo dos artigos e seus dados em sua forma, correção e confiabilidade são de responsabilidade exclusiva dos autores. Permitido o download da obra e o compartilhamento desde que sejam atribuídos créditos aos autores, mas sem a possibilidade de alterá-la de nenhuma forma ou utilizá-la para fins comerciais.

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Section: Discussionmentioning

confidence: 83%

CRESCIMENTO MICELIAL DE Stemphyllium SP. AGENTE ETIOLÓGICO DA QUEIMA DE ESTNFÍLIO NA CULTURA DA CEBOLA (Allium cepa) EM DIFERENTES MEIOS DE CULTURA

Neves¹,

Pereira²

2020

Aspectos Fitossanitários Da Agricultura

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“…Biovars 4 and 5 have not been reported in the country (Table 1). NETO et al, 2009;LIMA et al, 2010).…”

Section: Ralstonia Solanacearum Races and Biovars In Brazilmentioning

confidence: 99%

Occurrence and diversity of Ralstonia solanacearum populations in Brazil

et al. 2015

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ABSTRACT:Ralstonia solanacearum is a gram-negative soil-borne bacterium capable of infection of hundreds of vegetable species over more than 50 botanical families, causing bacterial wilt, except for bananas, when the disease is called Moko. It deserves special attention, from all other plant pathogenic bacteria, for its high phenotypic and genotypic plasticity, a characteristic that makes disease control extremely difficult. In this context, frequent and necessary surveys are conduct in the attempt of characterizing the prevailing strains of R. solanacearum in each region where the disease has been reported. However, knowledge about occurrence and diversity of R. solanacearum in Brazil is fragmented and in some cases, based on inconclusive studies with few strains, little representative of a given region. The need to obtain a greater picture guided this review. The occurrence of this bacterium in Brazilian States and the possible causes for its dissemination are presented, with emphasis on studies of genetic variability of populations of R. solanacearum in the country. The compiled results report a wide distribution of the bacterium in Brazil and great variability of its populations among locations. Partly due to the difficulty of detecting small titer of bacteria in samples, paucity of information about the origin of inoculum in certain regions is observed, as well as the need for detecting the presence of the pathogen in asymptomatic plants, potato tubers with latent infections, soil, and water, which are the major causes of bacterial dissemination into areas without any disease history.

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“…Among the diseases incidental to the crop is bacterial wilt, caused by the bacterium Ralstonia solanacearum. This disease is Located between the main ones in the tropical regions and is considered currently the most important in the North and Northeast of Brazil (Félix et al 2012), due to environmental conditions being highly favorable to its development (Lima et al 2010).…”

Section: Introductionmentioning

confidence: 99%

Selection of tomato progenies F2:3 for resistance to bacterial wilt via mixed modeling

Costa¹,

Lima²,

Santos³

et al. 2023

Braz. J. Develop.

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Bacterial wilt is among the major diseases of tomatoes and is currently considered the most important in Brazil. The development of resistant cultivars is the strategy that presents greater efficiency and viability, being the mixed modeling approach allows the selection of genetic materials with major accuracy. This work defines strategies for the development and selection of segregating strains F2:3 from the estimation of genetic parameters and individual mean components using mixed models. A greenhouse experiment was conducted in a randomized complete block design with four replicates, in which the resistance of 43 progenies F2:3 segregants obtained from the F2 generation from the cross between the parents was evaluated, having as parents Yoshimatsu (Resistant) and IPA-7 (Susceptible). Components of variance and genetic parameters were estimated, followed by ranking by additive genetic values. The selection of F2:3 progenies resistant to bacterial wilt was more effective when the household information was used. Mixed model procedures for the selective accuracy of 77.98%, verified efficiency in the selection of F2:3 progenies resistant to bacterial wilt evaluated at 20 days after inoculation. A total of 240 resistant and moderately resistant individual progenies were selected with severity scores between 1 and 2.49. Families presented the new averages between 1.0 and 2.87, making 23 families F2:3 that will continue the tomato breeding program.

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Reação em campo à murcha bacteriana de cultivares de tomate em Roraima

Cited by 6 publications

References 9 publications

CRESCIMENTO MICELIAL DE Stemphyllium SP. AGENTE ETIOLÓGICO DA QUEIMA DE ESTNFÍLIO NA CULTURA DA CEBOLA (Allium cepa) EM DIFERENTES MEIOS DE CULTURA

CRESCIMENTO MICELIAL DE Stemphyllium SP. AGENTE ETIOLÓGICO DA QUEIMA DE ESTNFÍLIO NA CULTURA DA CEBOLA (Allium cepa) EM DIFERENTES MEIOS DE CULTURA

Occurrence and diversity of Ralstonia solanacearum populations in Brazil

Selection of tomato progenies F2:3 for resistance to bacterial wilt via mixed modeling

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