Tratamentos de erradicação de Xanthomonas vesicatoria e efeitos sobre a qualidade das sementes de tomate

Carmo, Margarida Goréte Ferreira do; Corrêa, Fábio Mathias; Cordeiro, Elizabeth S.; Carvalho, Aldir de O. de; Rossetto, Cláudia Antônia Vieira

doi:10.1590/s0102-05362004000300015

Cited by 8 publications

(15 citation statements)

References 8 publications

(1 reference statement)

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…In seeds, the elimination or reduction of the infective inoculant of fungi has been efficiently achieved through chemical, biological and physical treatments (ESTEFANI; MIRANDA FILHO; UESUGI, 2007). Among the physical methods, the effectiveness of thermotherapy, which consists of exposing the seeds to the action of heat combined with the time of treatment, has been demonstrated in some studies (CARMO et al, 2004;LOPES;ROSSETTO, 2004;OLIVEIRA et al, 2011). However, for this method to be successful, it is necessary to know the correct combination of temperature and exposure time, which may vary with the species, cultivar, batch, initial vigour and other factors.…”

Section: Introductionmentioning

confidence: 99%

Thermotherapy in treating fennel seeds (Foeniculum vulgare Mill.): effects on health and physiological quality

Gama¹,

Neto²,

Bruno³

et al. 2014

Rev. Ciênc. Agron.

View full text Add to dashboard Cite

Thermotherapy in treating fennel seeds (Foeniculum vulgareMillABSTRACT -Thermotherapy is a physical treatment consisting of the exposure of seeds to the action of heat over time. The aim was to assess the health and physiological quality of fennel seeds (Foeniculum vulgare Mill.), both freshly harvested and stored for three years, and submitted to thermotherapy. Two experiments were conducted. In the first, thermotherapy was carried out on freshly-harvested fennel seeds obtained under different cropping systems: T1 -Monocrop fennel treated with the insecticide, thiamethoxam; T2 -Monocrop fennel without the application of insecticide; T3 -Fennel intercropped with cotton and treated with insecticide; T4 -Intercropped fennel without the application of insecticide. In the second experiment, seeds were used which had been stored for three years and obtained from plants, both treated and untreated with insecticide. The seeds were exposed to dry heat for different periods (0, 3, 6, 9, 12 and 15 days) at 70 °C. The tests performed included: health, germination, first count, speed germination index, seedling length and dry weight. The cropping systems had no influence on the incidence of the fungus Alternaria sp. Stored fennel seeds coming from plants treated with insecticide, display better health and physiological quality. A period of 12 days of thermotherapy is effective in controlling the fungus Alternaria sp. without causing losses in the viability of the fennel seeds.Key words: Alternaria sp. Thiamethoxam. Vigour.RESUMO -A termoterapia é um tratamento físico, que consiste na exposição das sementes à ação do calor em combinação com o tempo. Objetivou-se avaliar a qualidade sanitária e fisiológica de sementes de erva-doce (Foeniculum vulgare Mill.), recém-colhidas e armazenadas por três anos, submetidas à termoterapia. Foram conduzidos dois experimentos: no primeiro, a termoterapia foi realizada com sementes de erva-doce recém-colhidas obtidas de diferentes sistemas de plantio: T1 -erva-doce solteira tratada com inseticida thiamethoxam; T2 -erva-doce solteira sem aplicação do inseticida; T3 -erva-doce consorciada com algodão e tratada com inseticida; T4 -erva-doce consorciada sem aplicação do inseticida. No segundo experimento utilizaram-se sementes armazenadas por três anos obtidas de plantas tratadas e não tratadas com inseticida. As sementes foram submetidas a diferentes tempos de exposição ao calor seco (0; 3; 6; 9, 12 e 15 dias) a 70 °C. Os testes realizados foram: sanidade, germinação, primeira contagem, índice de velocidade de germinação, comprimento e massa seca de plântulas. Os sistemas de plantio não influenciaram na incidência do fungo Alternaria sp. As sementes de erva-doce armazenadas, oriundas de plantas tratadas com inseticida, possuem maior qualidade sanitária e fisiológica. O período de 12 dias de termoterapia é eficiente no controle do fungo Alternaria sp. sem proporcionar perdas na viabilidade das sementes de erva-doce.Palavras-chave: Alternaria sp. Thiamethoxam. Vigor.

show abstract

Section: Introductionmentioning

confidence: 99%

Thermotherapy in treating fennel seeds (Foeniculum vulgare Mill.): effects on health and physiological quality

Gama¹,

Neto²,

Bruno³

et al. 2014

Rev. Ciênc. Agron.

View full text Add to dashboard Cite

show abstract

“…Silva et al (2013) reported transmission and infection by Xanthomonas vesicatoria from seed integument to new shoots of tomato seedlings (Solanum lycopersicum L.). Although seed transmission rate is low (Saettler et al, 1989;Carmo et al, 2004), seeds can act as efficient vectors for spreading bacteria (Romeiro, 2005) if the initial inoculum is introduced into growing areas (Carmo et al, 1996;Carmo et al, 2004;Romeiro, 2005;Silva et al, 2013). For example, the transport of bacteria from complex X. vesicatoria by tomato seeds (S. lycopersicum) is a major mechanism of survival and spread of the pathogen (Carmo et al, 2004;Jones et al, 2004).…”

Section: Introductionmentioning

confidence: 99%

“…Although seed transmission rate is low (Saettler et al, 1989;Carmo et al, 2004), seeds can act as efficient vectors for spreading bacteria (Romeiro, 2005) if the initial inoculum is introduced into growing areas (Carmo et al, 1996;Carmo et al, 2004;Romeiro, 2005;Silva et al, 2013). For example, the transport of bacteria from complex X. vesicatoria by tomato seeds (S. lycopersicum) is a major mechanism of survival and spread of the pathogen (Carmo et al, 2004;Jones et al, 2004). Thus, seed-borne bacteria can be efficiently disseminated over long distances and introduced in areas free of disease, or may serve as a source of initial inoculum for epidemics in nurseries and fields (Neergaard, 1979;Romeiro, 2005).…”

Section: Introductionmentioning

confidence: 99%

Occurrence of Pseudomonas syringae pv. garcae in coffee seeds

Belan¹,

Pozza²,

Freitas³

et al. 2016

Aust J Crop Sci

View full text Add to dashboard Cite

Given the damage and losses caused by bacterial blight of coffee (Pseudomonas syringae pv. garcae) (PSG) in coffee (Coffea arabica) seedling nurseries and lack of knowledge of the origin of the initial inoculum, the goal of this study was to determine whether coffee seeds can contain viable inoculum and spread bacterial inoculum. Seeds from plants with symptoms of bacterial blight of coffee were immersed in sterilized saline solution, and the crude extract obtained was inoculated in leaves of coffee seedlings. Leaves of plants inoculated with seed extract from symptomatic plants had symptoms of bacterial blight similar to those on leaves inoculated with reference isolate PSG. Seedlings inoculated with seed extract from asymptomatic plants showed no symptoms. Symptomatic leaves were submitted to exudate tests, and the etiologic agent was isolated in culture medium. The isolates with colonies morphologically similar to reference isolate PSG were selected and tested for hypersensitive reaction (HR) and pathogenicity to coffee seedlings. The isolates positive for HR and pathogenic to coffee also showed biochemical and molecular patterns equal to those of reference isolate PSG by the rep-PCR technique using Box primer. Thus, coffee seeds from plants with symptoms of bacterial blight can contain viable inoculum of P. syringae pv. garcae.

show abstract

“…(MUNIZ, 2001); Alternaria alternata (MUNIZ, 2001;TOGNI et al, 2005); Phoma sp. (NASCIMENTO;MORAES, 1990); Pseudomonas tomato (NASCIMENTO;MORAES, 1990); Xanthomonas vesicatoria (McMILLAN Jr., 1987;NASCIMENTO;MORAES, 1990;SILVA et al 2002;CARMO et al, 2004); Clavibacter michiganense subsp michiganense (Smith) (SHOEMAKER;ECHANDI, 1976;IKUTA, 1990;NASCIMENTO;MORAES, 1990) e TMV (REES, 1970), como agentes causadores de doenças do tomateiro, de acordo com Kurosawa e Pavan (1997). Somando-se a esses, a Didymella lycopersici (KASSELAKI et al, 2008) pode estar associada às sementes, mas não é agente causador de doenças no tomateiro.…”

Section: Revisão Bibliográficaunclassified

“…(NASCIMENTO;MORAES, 1990;DINIZ et al, 2006); Cladosporium fulvum (MUNIZ, 2001) e Erwinia spp. (SILVA et al 2002;CARMO et al, 2004;. Por outro lado, muitos, também citados na literatura, não são agentes causadores de doenças para o tomateiro, mas podem reduzir o vigor das sementes, como:…”

Section: Revisão Bibliográficaunclassified

Relações entre termoterapia, germinação, vigor e sanidade de sementes de tomate

Braga¹

View full text Add to dashboard Cite

Ao Prof. Dr. Carlos Tadeu dos Santos Dias e ao doutorando em estatística Ricardo Olinda pelas orientações e empenho nas análises estatísticas. À empresa Sakata Seed Sudamerica Ltda, pela estrutura e colaboração e às empresas Isla Sementes Ltda e Agristar do Brasil pelas sementes fornecidas. Ao Professor Dr. José Rogério de Oliveira, coordenador do Laboratório de Bacteriologia de Plantas da UFV e equipe pela identificação da bactéria e orientações. Aos funcionários da biblioteca Central da ESALQ/USP e, em especial, as bibliotecárias Sílvia Maria Zinsly, pelo apoio e incentivo, e Eliana Maria Garcia pela presteza na correção das referências bibliográficas. Ao Gerente Geral da Korin Preservação e Recuperação do Meio-KMA, Hiroshi Ota, e à Bióloga Sakae Kinjo pela amizade e por terem me apoiado e incentivado no início dessa jornada e pela contribuição na tradução.

show abstract

Tratamentos de erradicação de Xanthomonas vesicatoria e efeitos sobre a qualidade das sementes de tomate

Cited by 8 publications

References 8 publications

Thermotherapy in treating fennel seeds (Foeniculum vulgare Mill.): effects on health and physiological quality

Thermotherapy in treating fennel seeds (Foeniculum vulgare Mill.): effects on health and physiological quality

Occurrence of Pseudomonas syringae pv. garcae in coffee seeds

Relações entre termoterapia, germinação, vigor e sanidade de sementes de tomate

Contact Info

Product

Resources

About