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Registro Completo |
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Biblioteca(s): |
Embrapa Unidades Centrais. |
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Data corrente: |
12/09/2001 |
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Data da última atualização: |
20/09/2004 |
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Autoria: |
COSTA, C.; FAVORETTO, V.; MALHEIROS, E. B. |
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Título: |
Variacao na Estrutura da Vegetacao de Duas Cultivares de Panicum Maximum Jacq. (Coloniao e Tabiata) Submetidas a Diferentes Tipos de Manejo. Composicao em proteina bruta e digestibilidade in vitro da materia seca. |
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Ano de publicação: |
1992 |
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Fonte/Imprenta: |
Pesquisa Agropecuaria Brasileira, Brasilia, v.27, n.12, p.1659-1670, dez.1992 |
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Idioma: |
Português |
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Conteúdo: |
O trabalho foi conduzido na FCAV-UNESP, Campus de Jaboticabal, com o objetivo de estudar os efeitos da presenca ou ausencia de adubacao nitrogenada (0 e 50 kg de N/ha/corte), de tres crescimentos sucessivos (21.12.87, 25.01.88 e 29.02.88) e de três idades de corte (28, 35 e 42 dias), sobre a composicao em proteina bruta e digestibilidade in vitro da materia seca de duas cultivares de Panicum maximum Jacq. (coloniao e tobiata), cortando-se a vegetacao em cinco estratos verticais (0-20; 20-40; 40-60; 60-80 e acima de 80 cm, em relacao ao nivel do solo). As amostras referentes aos diversos estratos foram separados em: folhas verdes, colmos verdes e material seco. De um modo geral, os teores de proteína bruta e os valores de digestibilidade in vitro da materia seca de ambas as cultivares foram maiores nos estratos superiores da vegetacao, ocorrendo, entretanto, decrescimo para os demais estratos e estadios mais avancados de desenvolvimento das plantas, principalmente na ausencia de adubacao introgenada. |
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Palavras-Chave: |
Adubacao nitrogenada; crescimentos de plantas; estratos verticais. |
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Categoria do assunto: |
-- |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/AI-SEDE/20759/1/pab11_dez_92.pdf
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Marc: |
LEADER 01701naa a2200181 a 4500
001 1105708
005 2004-09-20
008 1992 bl uuuu u00u1 u #d
100 1 $aCOSTA, C.
245 $aVariacao na Estrutura da Vegetacao de Duas Cultivares de Panicum Maximum Jacq. (Coloniao e Tabiata) Submetidas a Diferentes Tipos de Manejo. Composicao em proteina bruta e digestibilidade in vitro da materia seca.
260 $c1992
520 $aO trabalho foi conduzido na FCAV-UNESP, Campus de Jaboticabal, com o objetivo de estudar os efeitos da presenca ou ausencia de adubacao nitrogenada (0 e 50 kg de N/ha/corte), de tres crescimentos sucessivos (21.12.87, 25.01.88 e 29.02.88) e de três idades de corte (28, 35 e 42 dias), sobre a composicao em proteina bruta e digestibilidade in vitro da materia seca de duas cultivares de Panicum maximum Jacq. (coloniao e tobiata), cortando-se a vegetacao em cinco estratos verticais (0-20; 20-40; 40-60; 60-80 e acima de 80 cm, em relacao ao nivel do solo). As amostras referentes aos diversos estratos foram separados em: folhas verdes, colmos verdes e material seco. De um modo geral, os teores de proteína bruta e os valores de digestibilidade in vitro da materia seca de ambas as cultivares foram maiores nos estratos superiores da vegetacao, ocorrendo, entretanto, decrescimo para os demais estratos e estadios mais avancados de desenvolvimento das plantas, principalmente na ausencia de adubacao introgenada.
653 $aAdubacao nitrogenada
653 $acrescimentos de plantas
653 $aestratos verticais
700 1 $aFAVORETTO, V.
700 1 $aMALHEIROS, E. B.
773 $tPesquisa Agropecuaria Brasileira, Brasilia$gv.27, n.12, p.1659-1670, dez.1992
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Embrapa Unidades Centrais (AI-SEDE) |
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Registro Completo
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Biblioteca(s): |
Embrapa Trigo. |
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Data corrente: |
09/03/2020 |
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Data da última atualização: |
09/03/2020 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Circulação/Nível: |
A - 2 |
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Autoria: |
DORIGAN, A. F.; CARVALHO, G.; POLONI, N. M.; NEGRISOLI, M. M.; MACIEL, J. L. N.; CERESINI, P. C. |
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Afiliação: |
Adriano Francis Dorigan, Universidade Federal de Lavras,Câmpus Universitário, Lavras, Minas Gerais, Brazil.; Giselle de Carvalho, Universidade Estadual Paulista, Campus de Ilha Solteira, Ilha Solteira, São Paulo, Brazil; Nadia Maria Poloni, Universidade Estadual Paulista, Campus de Jaboticabal, Jaboticabal, São Paulo, Brazil; Matheus Mereb Negrisoli, Universidade Estadual Paulista, Campus de Botucatu, Botucatu, São Paulo, Brazil; JOAO LEODATO NUNES MACIEL, CNPT; Paulo Cezar Ceresini, 2Universidade Estadual Paulista, Campus de Ilha Solteira, Ilha Solteira, São Paulo, Brazil. |
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Título: |
Resistance to triazole fungicides in Pyricularia species is associated with invasive plants from wheat fields in BraziL. |
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Ano de publicação: |
2019 |
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Fonte/Imprenta: |
Acta Scientiarum, v. 41, e39332, 2019. |
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DOI: |
10.4025/actasciagron.v41i1.39332 |
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Idioma: |
Inglês |
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Conteúdo: |
Triazole fungicides have not been effective for managing the wheat blast disease in Brazil. A broad analysis across six geographicalpopulations of Pyricularia graminis-triticiin central-southern Brazil indicated a high level of resistance to triazole fungicides. Since P.graminis-triticiis also associated with others poaceous species,here, we analyzed whether triazole-resistant isolates of the blast pathogencould be recovered from other poaceous hosts that are invasive of sprayed wheat fields. In addition to P.graminis-tritici (Pygt),we also evaluated the levels of sensitivity of three other grass-associated blast pathogens, which included P. grisea (Pg), P. pennisetigena (Pp), andP. urashimae(Pu).Resistance to the triazole fungicides tebuconazole and epoxiconazole was assessed phenotypically based on EC50 values and molecularly by analysis of the presence of mutations in the CYP51Agene, which encodes for the target enzyme 14-alpha-demethylase. We detected triazole-resistant Pyriculariaspp. (Pg, Pp, Puand Pygt) that is associated with Avenasativa, Cenchrusechinatus, Chlorisdistichophylla, Cynodonsp., Digitaria horizontalis, D. sanguinalis, Panicummaximum or Urochloaspp. The major outcome from our study was the evidence that invasive poaceous species from wheat fields could be an important source of triazole resistant fungal inoculum for the initial phases of the wheat blast epidemics.Keywords:blast disease; CYP51A gene; sterol demethylation inhibitor (DMI) fungicides; epoxiconazole; tebuconazole. MenosTriazole fungicides have not been effective for managing the wheat blast disease in Brazil. A broad analysis across six geographicalpopulations of Pyricularia graminis-triticiin central-southern Brazil indicated a high level of resistance to triazole fungicides. Since P.graminis-triticiis also associated with others poaceous species,here, we analyzed whether triazole-resistant isolates of the blast pathogencould be recovered from other poaceous hosts that are invasive of sprayed wheat fields. In addition to P.graminis-tritici (Pygt),we also evaluated the levels of sensitivity of three other grass-associated blast pathogens, which included P. grisea (Pg), P. pennisetigena (Pp), andP. urashimae(Pu).Resistance to the triazole fungicides tebuconazole and epoxiconazole was assessed phenotypically based on EC50 values and molecularly by analysis of the presence of mutations in the CYP51Agene, which encodes for the target enzyme 14-alpha-demethylase. We detected triazole-resistant Pyriculariaspp. (Pg, Pp, Puand Pygt) that is associated with Avenasativa, Cenchrusechinatus, Chlorisdistichophylla, Cynodonsp., Digitaria horizontalis, D. sanguinalis, Panicummaximum or Urochloaspp. The major outcome from our study was the evidence that invasive poaceous species from wheat fields could be an important source of triazole resistant fungal inoculum for the initial phases of the wheat blast epidemics.Keywords:blast disease; CYP51A gene; sterol demethylation inhibitor (DMI) fungicides; epoxico... Mostrar Tudo |
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Palavras-Chave: |
Blast pathogens; CYP51A gene; Epoxiconazole; P Graminis-tritici; Pyricularia graminis-tritici (Pygt); Pyricularia grisea (Pg); Pyricularia oryzae(Po); Pyricularia pennisetigena (Pp); Pyricularia species; Pyricularia urashimae (Pu); Sterol demethylation inhibitor (DMI) fungicides. |
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Thesagro: |
Pyricularia Grisea; Triticum Aestivum. |
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Thesaurus NAL: |
Blast disease; Tebuconazole; Triazole fungicides. |
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Categoria do assunto: |
-- |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/211644/1/1807-8621-asagr-41-e39332.pdf
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Marc: |
LEADER 02747naa a2200385 a 4500
001 2121059
005 2020-03-09
008 2019 bl uuuu u00u1 u #d
024 7 $a10.4025/actasciagron.v41i1.39332$2DOI
100 1 $aDORIGAN, A. F.
245 $aResistance to triazole fungicides in Pyricularia species is associated with invasive plants from wheat fields in BraziL.$h[electronic resource]
260 $c2019
520 $aTriazole fungicides have not been effective for managing the wheat blast disease in Brazil. A broad analysis across six geographicalpopulations of Pyricularia graminis-triticiin central-southern Brazil indicated a high level of resistance to triazole fungicides. Since P.graminis-triticiis also associated with others poaceous species,here, we analyzed whether triazole-resistant isolates of the blast pathogencould be recovered from other poaceous hosts that are invasive of sprayed wheat fields. In addition to P.graminis-tritici (Pygt),we also evaluated the levels of sensitivity of three other grass-associated blast pathogens, which included P. grisea (Pg), P. pennisetigena (Pp), andP. urashimae(Pu).Resistance to the triazole fungicides tebuconazole and epoxiconazole was assessed phenotypically based on EC50 values and molecularly by analysis of the presence of mutations in the CYP51Agene, which encodes for the target enzyme 14-alpha-demethylase. We detected triazole-resistant Pyriculariaspp. (Pg, Pp, Puand Pygt) that is associated with Avenasativa, Cenchrusechinatus, Chlorisdistichophylla, Cynodonsp., Digitaria horizontalis, D. sanguinalis, Panicummaximum or Urochloaspp. The major outcome from our study was the evidence that invasive poaceous species from wheat fields could be an important source of triazole resistant fungal inoculum for the initial phases of the wheat blast epidemics.Keywords:blast disease; CYP51A gene; sterol demethylation inhibitor (DMI) fungicides; epoxiconazole; tebuconazole.
650 $aBlast disease
650 $aTebuconazole
650 $aTriazole fungicides
650 $aPyricularia Grisea
650 $aTriticum Aestivum
653 $aBlast pathogens
653 $aCYP51A gene
653 $aEpoxiconazole
653 $aP Graminis-tritici
653 $aPyricularia graminis-tritici (Pygt)
653 $aPyricularia grisea (Pg)
653 $aPyricularia oryzae(Po)
653 $aPyricularia pennisetigena (Pp)
653 $aPyricularia species
653 $aPyricularia urashimae (Pu)
653 $aSterol demethylation inhibitor (DMI) fungicides
700 1 $aCARVALHO, G.
700 1 $aPOLONI, N. M.
700 1 $aNEGRISOLI, M. M.
700 1 $aMACIEL, J. L. N.
700 1 $aCERESINI, P. C.
773 $tActa Scientiarum$gv. 41, e39332, 2019.
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