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 | Acesso ao texto completo restrito à biblioteca da Embrapa Roraima. Para informações adicionais entre em contato com cpafrr.biblioteca@embrapa.br. |
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Registro Completo |
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Biblioteca(s): |
Embrapa Meio Ambiente; Embrapa Roraima. |
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Data corrente: |
16/05/2019 |
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Data da última atualização: |
22/11/2019 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
LIMA, H. E. de; HALFELD-VIEIRA, B. de A.; NECHET, K. de L.; SOUZA, G. R. de; MIZUBUTI, E. S. G.; OLIVEIRA, J. R. de. |
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Afiliação: |
HYANAMEYKA EVANGELISTA DE L PRIMO, CPAF-RR; BERNARDO DE ALMEIDA HALFELD VIEIRA, CNPMA; KATIA DE LIMA NECHET, CNPMA; GIOVANNI RIBEIRO DE SOUZA, CPAF-RR. |
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Título: |
Influence of Bacterial Blight on different phenological stages of cowpea. |
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Ano de publicação: |
2019 |
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Fonte/Imprenta: |
Scientia Horticulturae, v. 255, p. 44-51, 2019. |
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Idioma: |
Inglês
Português |
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Conteúdo: |
Abstract: The cowpea bacterial blight is a common disease, but some of its epidemiological parameters have not been totally elucidated. The objective of this study was to determine the influence of the inoculation of the bacterial blight pathogen (Xanthomonas citri pv. vignicola - Xcv) at different phenological stages of the cowpea, as well the effect on its yield components, and the transmission of the bacterium to the seed. Under greenhouse conditions, plant defoliation was observed on the cowpea cultivar BRS Bragança inoculated with 107 CFU of Xcv/mL at the four phenological stages, - VC (plants with primary leaves at nodes 1 & 2), V3 (3rd trifoliolate leaf unfolded at node 5), R2 (50–100% of open flowers), and R3 (one pod at maximum lenght). There was a difference in the relative area under the disease progress curve (RAUDPC) between the phenological stages and the reduction of some production components, such as dry seed mass. The pathogen was isolated from seeds produced in infected plants in all phenological stage, with the highest values ??of CFU per gram of seeds in the V3 and R3. Under field conditions, two experiments were conducted using the cv. BRS Vita-7 (resistant) and cv. BRS Bragança (susceptible) inoculated with Xcv at the V3 and R2. The disease was more severe in cv. BRS Bragança, with the RAUDPC being higher in plants inoculated at V3 with a reduction of dry seed mass in inoculated R2 and inoculated R3 when compared to their uninoculated counterparts across two growing seasons. Regardless of the phenological stage in which the plant was inoculated, it was possible to detect Xcv in cv. BRS Bragança and cv. BRS Vita-7 seeds. The highest values of CFU per gram were recorded in samples from cv. BRS Bragança inoculated at V3 stage. Results on the presence cowpea's seeds infected by Xcv show that bacterial blight disease is highly seed transmitted and demonstrate the current need to avoid additional spread of the pathogen to new areas where there are favorable climatic conditions in Brazil or to disease-free countries that can result in considerable losses. Thus, the disease management should be used based on seed certification programmes, realizing sanitary tests of cowpea seed to avoid the spread of Xcv and the maintenance of disease-free seed stocks. MenosAbstract: The cowpea bacterial blight is a common disease, but some of its epidemiological parameters have not been totally elucidated. The objective of this study was to determine the influence of the inoculation of the bacterial blight pathogen (Xanthomonas citri pv. vignicola - Xcv) at different phenological stages of the cowpea, as well the effect on its yield components, and the transmission of the bacterium to the seed. Under greenhouse conditions, plant defoliation was observed on the cowpea cultivar BRS Bragança inoculated with 107 CFU of Xcv/mL at the four phenological stages, - VC (plants with primary leaves at nodes 1 & 2), V3 (3rd trifoliolate leaf unfolded at node 5), R2 (50–100% of open flowers), and R3 (one pod at maximum lenght). There was a difference in the relative area under the disease progress curve (RAUDPC) between the phenological stages and the reduction of some production components, such as dry seed mass. The pathogen was isolated from seeds produced in infected plants in all phenological stage, with the highest values ??of CFU per gram of seeds in the V3 and R3. Under field conditions, two experiments were conducted using the cv. BRS Vita-7 (resistant) and cv. BRS Bragança (susceptible) inoculated with Xcv at the V3 and R2. The disease was more severe in cv. BRS Bragança, with the RAUDPC being higher in plants inoculated at V3 with a reduction of dry seed mass in inoculated R2 and inoculated R3 when compared to their uninoculated counterparts acro... Mostrar Tudo |
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Palavras-Chave: |
Bacterial blight. |
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Thesagro: |
Doença de Planta; Feijão de Corda; Vigna Unguiculata; Xanthomonas Citri. |
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Thesaurus Nal: |
Bacterial diseases of plants; Cowpeas; Disease transmission. |
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Categoria do assunto: |
--
H Saúde e Patologia |
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Marc: |
LEADER 03132naa a2200277 a 4500
001 2109056
005 2019-11-22
008 2019 bl uuuu u00u1 u #d
100 1 $aLIMA, H. E. de
245 $aInfluence of Bacterial Blight on different phenological stages of cowpea.$h[electronic resource]
260 $c2019
520 $aAbstract: The cowpea bacterial blight is a common disease, but some of its epidemiological parameters have not been totally elucidated. The objective of this study was to determine the influence of the inoculation of the bacterial blight pathogen (Xanthomonas citri pv. vignicola - Xcv) at different phenological stages of the cowpea, as well the effect on its yield components, and the transmission of the bacterium to the seed. Under greenhouse conditions, plant defoliation was observed on the cowpea cultivar BRS Bragança inoculated with 107 CFU of Xcv/mL at the four phenological stages, - VC (plants with primary leaves at nodes 1 & 2), V3 (3rd trifoliolate leaf unfolded at node 5), R2 (50–100% of open flowers), and R3 (one pod at maximum lenght). There was a difference in the relative area under the disease progress curve (RAUDPC) between the phenological stages and the reduction of some production components, such as dry seed mass. The pathogen was isolated from seeds produced in infected plants in all phenological stage, with the highest values ??of CFU per gram of seeds in the V3 and R3. Under field conditions, two experiments were conducted using the cv. BRS Vita-7 (resistant) and cv. BRS Bragança (susceptible) inoculated with Xcv at the V3 and R2. The disease was more severe in cv. BRS Bragança, with the RAUDPC being higher in plants inoculated at V3 with a reduction of dry seed mass in inoculated R2 and inoculated R3 when compared to their uninoculated counterparts across two growing seasons. Regardless of the phenological stage in which the plant was inoculated, it was possible to detect Xcv in cv. BRS Bragança and cv. BRS Vita-7 seeds. The highest values of CFU per gram were recorded in samples from cv. BRS Bragança inoculated at V3 stage. Results on the presence cowpea's seeds infected by Xcv show that bacterial blight disease is highly seed transmitted and demonstrate the current need to avoid additional spread of the pathogen to new areas where there are favorable climatic conditions in Brazil or to disease-free countries that can result in considerable losses. Thus, the disease management should be used based on seed certification programmes, realizing sanitary tests of cowpea seed to avoid the spread of Xcv and the maintenance of disease-free seed stocks.
650 $aBacterial diseases of plants
650 $aCowpeas
650 $aDisease transmission
650 $aDoença de Planta
650 $aFeijão de Corda
650 $aVigna Unguiculata
650 $aXanthomonas Citri
653 $aBacterial blight
700 1 $aHALFELD-VIEIRA, B. de A.
700 1 $aNECHET, K. de L.
700 1 $aSOUZA, G. R. de
700 1 $aMIZUBUTI, E. S. G.
700 1 $aOLIVEIRA, J. R. de
773 $tScientia Horticulturae$gv. 255, p. 44-51, 2019.
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Embrapa Roraima (CPAF-RR) |
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Registro Completo
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Biblioteca(s): |
Embrapa Semiárido. |
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Data corrente: |
09/04/2008 |
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Data da última atualização: |
02/04/2024 |
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Tipo da produção científica: |
Artigo em Anais de Congresso / Nota Técnica |
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Autoria: |
SILVA, A. G. M.; BORGES, I.; NEIVA, J. N.; RODRIGUEZ, N. M.; SALIBA, E. de O. S.; MORAES, S. A. de; MERLO, F. A.; MORAIS, A. J. G. de; LIMA, D. de; SOUSA, T. A. S. |
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Afiliação: |
André Guimarães Maciel e Silva, UFPA; Iran Borges, UFMG; José Neuman Neiva, UFTO; Norberto Mário Rodriguez, UFMG; Eloisa de Oliveira Simões Saliba, UFMG; SALETE ALVES DE MORAES, CPATSA; Fernanda Albuquerque Merlo, UFMG; Abner José Girão Morais, UFCE; Diana de Lima, UFCE; Tiago D'Alesandro Sabato e Sousa, UFMG. |
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Título: |
Valor nutritivo do farelo de coco em ovinos: digestibilidade da fibra. |
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Ano de publicação: |
2007 |
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Fonte/Imprenta: |
In: SIMPÓSIO INTERNACIONAL SOBRE CAPRINOS E OVINOS DE CORTE, 3., 2007, João Pessoa. Anais... João Pessoa: SEBRAE-PB: EMEPA-PB, 2007. |
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Descrição Física: |
1 CD-ROM. |
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Idioma: |
Português |
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Conteúdo: |
Com o objetivo de avaliar o valor nutritivo do farelo de coco (Cocus nucifera) foi determinado o coeficiente de digestibilidade da fibra em detergente neutro (DFDN), fibra em detergente ácido (DFDA), celulose (DCEL), hemicelulose (DHCEL) e carboidratos totais (DCHO) em borregos deslanados alojados em gaiolas metabólicas providas de separadores de fezes e urina recebendo feno de tifton-85 e níveis crescentes de farelo de coco nos níveis de zero, oito, 17 e 25% de farelo de coco com base na matéria natural, em um esquema inteiramente ao acaso com quatro tratamentos (nível de farelo de coco) e seis repetições (borregos) por tratamento perfazendo um total de 24 observações, empregando o método SNK a 5% de probabilidade para comparação das médias. Constatou-se pela comparações de médias que não houve efeito do nível de inclusão do farelo de coco sobre a DFDN, DFDA, DCEL, DHCEL e DCH). Concluiu-se que o farelo de coco incluído até 25% em dietas para ovinos não causa efeito sobre a digestibilidade aparente das frações fibrosas e dos carboidratos totais. |
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Thesagro: |
Coco; Digestibilidade; Fibra; Nutrição Animal; Ovino. |
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Thesaurus NAL: |
Animal nutrition; Coconuts; Digestibility; Sheep. |
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Categoria do assunto: |
L Ciência Animal e Produtos de Origem Animal |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/CPATSA/37439/1/OPB1765.pdf
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Marc: |
LEADER 02046nam a2200337 a 4500
001 1162541
005 2024-04-02
008 2007 bl uuuu u00u1 u #d
100 1 $aSILVA, A. G. M.
245 $aValor nutritivo do farelo de coco em ovinos$bdigestibilidade da fibra.
260 $aIn: SIMPÓSIO INTERNACIONAL SOBRE CAPRINOS E OVINOS DE CORTE, 3., 2007, João Pessoa. Anais... João Pessoa: SEBRAE-PB: EMEPA-PB$c2007
300 $c1 CD-ROM.
520 $aCom o objetivo de avaliar o valor nutritivo do farelo de coco (Cocus nucifera) foi determinado o coeficiente de digestibilidade da fibra em detergente neutro (DFDN), fibra em detergente ácido (DFDA), celulose (DCEL), hemicelulose (DHCEL) e carboidratos totais (DCHO) em borregos deslanados alojados em gaiolas metabólicas providas de separadores de fezes e urina recebendo feno de tifton-85 e níveis crescentes de farelo de coco nos níveis de zero, oito, 17 e 25% de farelo de coco com base na matéria natural, em um esquema inteiramente ao acaso com quatro tratamentos (nível de farelo de coco) e seis repetições (borregos) por tratamento perfazendo um total de 24 observações, empregando o método SNK a 5% de probabilidade para comparação das médias. Constatou-se pela comparações de médias que não houve efeito do nível de inclusão do farelo de coco sobre a DFDN, DFDA, DCEL, DHCEL e DCH). Concluiu-se que o farelo de coco incluído até 25% em dietas para ovinos não causa efeito sobre a digestibilidade aparente das frações fibrosas e dos carboidratos totais.
650 $aAnimal nutrition
650 $aCoconuts
650 $aDigestibility
650 $aSheep
650 $aCoco
650 $aDigestibilidade
650 $aFibra
650 $aNutrição Animal
650 $aOvino
700 1 $aBORGES, I.
700 1 $aNEIVA, J. N.
700 1 $aRODRIGUEZ, N. M.
700 1 $aSALIBA, E. de O. S.
700 1 $aMORAES, S. A. de
700 1 $aMERLO, F. A.
700 1 $aMORAIS, A. J. G. de
700 1 $aLIMA, D. de
700 1 $aSOUSA, T. A. S.
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