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Registro Completo |
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Biblioteca(s): |
Embrapa Soja. |
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Data corrente: |
06/10/1992 |
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Data da última atualização: |
28/10/2004 |
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Autoria: |
HENNING, A. A.; FRANCA NETO, J. B. |
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Afiliação: |
EMBRAPA-CNPSo, Londrina, PR. |
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Título: |
Physiological race and sources of resistance to downy mildew (Plasmopara halstedii (Farl.) Berl. & de Toni) in Brazil. |
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Ano de publicação: |
1985 |
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Fonte/Imprenta: |
In: CONFERENCIA INTERNACIONAL DE GIRASOL, 11., 1985, Mar del Plata, Actas. Mar del Plata: ASAGIR/ISA, 1985. |
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Volume: |
t.2 |
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Páginas: |
p.407-409. |
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Idioma: |
Inglês |
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Conteúdo: |
The occurrence of the sunflower downy mildew in Brazil was observed in 1982. This study was carried out to determine the physiological race and to find out possible sources of resistance to P. halstedii. Identification of the race was made using the breeding lines AD 66, (resistant to European race I), RHA 271 and RHA 274, resistant to European race I and American race II, and cultivar Issanka, susceptible to both races Seeds were artificially inoculated with oospore suspension obtained from field infected leaves, and planted in the greenhouse in trays containing nonsterilized soil. The disease was observed only on plants of Issanka and AD 66, indicating that the race of P. halstedii occurring in Brazil is the American race II. Among the several lines, varieties and hybrids tested, Issanka, Cordobes, Contissol 112, Progress, PGIB, PIIDR, KLM, 3GR, 2GB x Nains and 6B x Ilnissei were susceptible. Only the hybrid DK 180 wasresistant to the disease. |
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Palavras-Chave: |
Brasil; Disease; Fitopatologia; Fungus; Phytopathology; Resistance; Sunflower. |
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Thesagro: |
Doença; Fungo; Girassol; Plasmopara Halstedii; Resistência. |
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Thesaurus Nal: |
Brazil. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 01840naa a2200313 a 4500
001 1453032
005 2004-10-28
008 1985 bl uuuu u00u1 u #d
100 1 $aHENNING, A. A.
245 $aPhysiological race and sources of resistance to downy mildew (Plasmopara halstedii (Farl.) Berl. & de Toni) in Brazil.
260 $c1985
300 $ap.407-409. t.2
490 $vt.2
520 $aThe occurrence of the sunflower downy mildew in Brazil was observed in 1982. This study was carried out to determine the physiological race and to find out possible sources of resistance to P. halstedii. Identification of the race was made using the breeding lines AD 66, (resistant to European race I), RHA 271 and RHA 274, resistant to European race I and American race II, and cultivar Issanka, susceptible to both races Seeds were artificially inoculated with oospore suspension obtained from field infected leaves, and planted in the greenhouse in trays containing nonsterilized soil. The disease was observed only on plants of Issanka and AD 66, indicating that the race of P. halstedii occurring in Brazil is the American race II. Among the several lines, varieties and hybrids tested, Issanka, Cordobes, Contissol 112, Progress, PGIB, PIIDR, KLM, 3GR, 2GB x Nains and 6B x Ilnissei were susceptible. Only the hybrid DK 180 wasresistant to the disease.
650 $aBrazil
650 $aDoença
650 $aFungo
650 $aGirassol
650 $aPlasmopara Halstedii
650 $aResistência
653 $aBrasil
653 $aDisease
653 $aFitopatologia
653 $aFungus
653 $aPhytopathology
653 $aResistance
653 $aSunflower
700 1 $aFRANCA NETO, J. B.
773 $tIn: CONFERENCIA INTERNACIONAL DE GIRASOL, 11., 1985, Mar del Plata, Actas. Mar del Plata: ASAGIR/ISA, 1985.
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Registro original: |
Embrapa Soja (CNPSO) |
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Registro Completo
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Biblioteca(s): |
Embrapa Semiárido. |
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Data corrente: |
10/03/2022 |
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Data da última atualização: |
10/05/2022 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Circulação/Nível: |
B - 1 |
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Autoria: |
CARVALHO JÚNIOR, O. V. de; SÁ, A. V. de; PEIXOTO, A. R; PAZ, C. D. da; CASTRO, J. M. da C. e; GAVA, C. A. T. |
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Afiliação: |
OSMAR VIEIRA DE CARVALHO JÚNIOR, Department of Technology and Social Sciences, State University of Bahia, Juazeiro, Brazil; ALICIA VIEIRA DE SÁ, Department of Biology, Pernambuco University, Petrolina, Brazil; ANA ROSA PEIXOTO, Department of Technology and Social Sciences, State University of Bahia, Juazeiro, Brazil; CRISTIANE DOMINGOS DA PAZ, Department of Technology and Social Sciences, State University of Bahia, Juazeiro, Brazil; JOSE MAURO DA CUNHA E CASTRO, CPATSA; CARLOS ALBERTO TUAO GAVA, CPATSA. |
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Título: |
Local Bacillus species as potential biocontrol agents for Meloidogyne enterolobii in melon (Cucumis melo L.). |
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Ano de publicação: |
2022 |
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Fonte/Imprenta: |
Biocontrol Science and Technology, v. 32, n. 3, p. 314-328, 2022. |
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DOI: |
https://doi.org/10.1080/09583157.2021.1999394 |
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Idioma: |
Inglês |
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Conteúdo: |
Biological control is an environmentally safe alternative in the management of nematodes. The selection of new biocontrol agents has focused on the potential of Bacillus species in in vitro and in vivo studies. In this study, twenty-three local Bacillus isolates were characterised and evaluated for metabolisable carbon source, secondary metabolite production and nematicidal action. The in vitro antagonism studies were evaluated after direct confrontation between infecting juveniles of M. enterolobii and bacterial isolates. In a greenhouse, nematicidal activity was evaluated 51 days after nematode inoculation in melon plants previously inoculated with the bacteria and cultivated in pots. The numbers of egg masses, galls, J2 and eggs in the root, J2 in the soil, the reproduction factor and the biomass yield of the plants were evaluated. From the results obtained in the laboratory experiments, it was observed that five carbon sources (D-glucose, N-acetyl-glucosamine, D-maltose, malic acid and trisodium citrate) were common to all isolates, with variation in the production of secondary metabolites. The sum of nematostatic and nematicidal effects was above 90%. In the pot experiment, a significant reduction in the number of galls was observed with the treatments LCB 03, LCB 40, LCB 45, LCB 47, LCB 51, LCB 56 and LCB 5(3) and there was no increase in plant biomass. Root protection may be associated with effective colonisation through biofilm formation and the action of metabolites with nematicide and disorientation action. However, it is necessary to carry out further studies. MenosBiological control is an environmentally safe alternative in the management of nematodes. The selection of new biocontrol agents has focused on the potential of Bacillus species in in vitro and in vivo studies. In this study, twenty-three local Bacillus isolates were characterised and evaluated for metabolisable carbon source, secondary metabolite production and nematicidal action. The in vitro antagonism studies were evaluated after direct confrontation between infecting juveniles of M. enterolobii and bacterial isolates. In a greenhouse, nematicidal activity was evaluated 51 days after nematode inoculation in melon plants previously inoculated with the bacteria and cultivated in pots. The numbers of egg masses, galls, J2 and eggs in the root, J2 in the soil, the reproduction factor and the biomass yield of the plants were evaluated. From the results obtained in the laboratory experiments, it was observed that five carbon sources (D-glucose, N-acetyl-glucosamine, D-maltose, malic acid and trisodium citrate) were common to all isolates, with variation in the production of secondary metabolites. The sum of nematostatic and nematicidal effects was above 90%. In the pot experiment, a significant reduction in the number of galls was observed with the treatments LCB 03, LCB 40, LCB 45, LCB 47, LCB 51, LCB 56 and LCB 5(3) and there was no increase in plant biomass. Root protection may be associated with effective colonisation through biofilm formation and the action of metabolites... Mostrar Tudo |
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Palavras-Chave: |
Bacillus; Biocontrole; Efeito nematicida; Meloidogyne enterolobii; Nematóides das galhas; Rizobactérias. |
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Thesagro: |
Controle Biológico; Cucumis Melo; Doença; Fungo Para Controle Biológico; Melão; Nematóide. |
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Thesaurus NAL: |
Biological control; Melons; Nematicidal properties; Plant growth-promoting rhizobacteria; Root-knot nematodes. |
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Categoria do assunto: |
O Insetos e Entomologia |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/doc/1140716/1/Melao-Fungo-para-controle-biologico-2022.pdf
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Marc: |
LEADER 02826naa a2200397 a 4500
001 2140716
005 2022-05-10
008 2022 bl uuuu u00u1 u #d
024 7 $ahttps://doi.org/10.1080/09583157.2021.1999394$2DOI
100 1 $aCARVALHO JÚNIOR, O. V. de
245 $aLocal Bacillus species as potential biocontrol agents for Meloidogyne enterolobii in melon (Cucumis melo L.).$h[electronic resource]
260 $c2022
520 $aBiological control is an environmentally safe alternative in the management of nematodes. The selection of new biocontrol agents has focused on the potential of Bacillus species in in vitro and in vivo studies. In this study, twenty-three local Bacillus isolates were characterised and evaluated for metabolisable carbon source, secondary metabolite production and nematicidal action. The in vitro antagonism studies were evaluated after direct confrontation between infecting juveniles of M. enterolobii and bacterial isolates. In a greenhouse, nematicidal activity was evaluated 51 days after nematode inoculation in melon plants previously inoculated with the bacteria and cultivated in pots. The numbers of egg masses, galls, J2 and eggs in the root, J2 in the soil, the reproduction factor and the biomass yield of the plants were evaluated. From the results obtained in the laboratory experiments, it was observed that five carbon sources (D-glucose, N-acetyl-glucosamine, D-maltose, malic acid and trisodium citrate) were common to all isolates, with variation in the production of secondary metabolites. The sum of nematostatic and nematicidal effects was above 90%. In the pot experiment, a significant reduction in the number of galls was observed with the treatments LCB 03, LCB 40, LCB 45, LCB 47, LCB 51, LCB 56 and LCB 5(3) and there was no increase in plant biomass. Root protection may be associated with effective colonisation through biofilm formation and the action of metabolites with nematicide and disorientation action. However, it is necessary to carry out further studies.
650 $aBiological control
650 $aMelons
650 $aNematicidal properties
650 $aPlant growth-promoting rhizobacteria
650 $aRoot-knot nematodes
650 $aControle Biológico
650 $aCucumis Melo
650 $aDoença
650 $aFungo Para Controle Biológico
650 $aMelão
650 $aNematóide
653 $aBacillus
653 $aBiocontrole
653 $aEfeito nematicida
653 $aMeloidogyne enterolobii
653 $aNematóides das galhas
653 $aRizobactérias
700 1 $aSÁ, A. V. de
700 1 $aPEIXOTO, A. R
700 1 $aPAZ, C. D. da
700 1 $aCASTRO, J. M. da C. e
700 1 $aGAVA, C. A. T.
773 $tBiocontrol Science and Technology$gv. 32, n. 3, p. 314-328, 2022.
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Embrapa Semiárido (CPATSA) |
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