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 | Acesso ao texto completo restrito à biblioteca da Embrapa Mandioca e Fruticultura. Para informações adicionais entre em contato com cnpmf.biblioteca@embrapa.br. |
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Registro Completo |
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Biblioteca(s): |
Embrapa Mandioca e Fruticultura. |
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Data corrente: |
03/12/2012 |
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Data da última atualização: |
25/05/2023 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
VIEIRA, L. de J.; SOARES, T. L.; ROSSI, M. L.; ALVES, A. A. C.; SANTOS, F. de A. R. dos; SOUZA, F. V. D. |
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Afiliação: |
LÍVIA DE JESUS VIEIRA, UFRB; TALIANE LEILA SOARES, UFRB; MÔNICA LANZONI ROSSI, USP; ALFREDO AUGUSTO CUNHA ALVES, SRI; FRANCISCO DE ASSIS RIBEIRO DOS SANTOS, UEFS; FERNANDA VIDIGAL DUARTE SOUZA, CNPMF. |
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Título: |
Viability, production and morphology of pollen grains for diff erent species in the genus Manihot (Euphorbiaceae). |
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Ano de publicação: |
2012 |
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Fonte/Imprenta: |
Acta Botanica Brasilica, v. 26, n. 2, p. 350-356, 2012. |
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ISSN: |
0102-3306 |
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Idioma: |
Inglês |
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Conteúdo: |
(Viability, production and morphology of pollen grains for different species in the genus Manihot (Euphorbiaceae)). Th e objective of this work was to characterize the viability, production and morphology of pollen for different species in the genus Manihot. Floral buds from Manihot accessions were collected from two germplasm banks at Embrapa Cassava & Fruits. The viability of the pollen was assessed via colorimetric, in vitro and in vivo assays. The diameter of the pollen grains was determined by measuring the transversal length of the grain. The experimental design was entirely randomized. Studies on pollen ultrastructure were performed via scanning electron microscopy. Pollen viability was high in the colorimetric tests and intermediate in vivo tests; there was no germination in the in vitro tests. The average production for all accessions was 1,253 pollen grains per fl oral bud. The size of the pollen grains varied from 132 to 163 µm in the wild accessions, and 129 to 146 µm in the cultivated accessions. Th e pollen grains for all accessions were very large, apolar, spherical as well as inaperturate, with an exine ornamented with pila organized in a Croton pattern. Th e wild accessions, in general, produced more and larger pollen grains compared with the cultivated accessions. |
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Palavras-Chave: |
Melhoramento genético. |
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Thesagro: |
Mandioca; Manihot Esculenta. |
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Thesaurus Nal: |
Breeding and Genetic Improvement; Genetic resources. |
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Categoria do assunto: |
G Melhoramento Genético |
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Marc: |
LEADER 02093naa a2200253 a 4500
001 1940940
005 2023-05-25
008 2012 bl uuuu u00u1 u #d
022 $a0102-3306
100 1 $aVIEIRA, L. de J.
245 $aViability, production and morphology of pollen grains for diff erent species in the genus Manihot (Euphorbiaceae).$h[electronic resource]
260 $c2012
520 $a(Viability, production and morphology of pollen grains for different species in the genus Manihot (Euphorbiaceae)). Th e objective of this work was to characterize the viability, production and morphology of pollen for different species in the genus Manihot. Floral buds from Manihot accessions were collected from two germplasm banks at Embrapa Cassava & Fruits. The viability of the pollen was assessed via colorimetric, in vitro and in vivo assays. The diameter of the pollen grains was determined by measuring the transversal length of the grain. The experimental design was entirely randomized. Studies on pollen ultrastructure were performed via scanning electron microscopy. Pollen viability was high in the colorimetric tests and intermediate in vivo tests; there was no germination in the in vitro tests. The average production for all accessions was 1,253 pollen grains per fl oral bud. The size of the pollen grains varied from 132 to 163 µm in the wild accessions, and 129 to 146 µm in the cultivated accessions. Th e pollen grains for all accessions were very large, apolar, spherical as well as inaperturate, with an exine ornamented with pila organized in a Croton pattern. Th e wild accessions, in general, produced more and larger pollen grains compared with the cultivated accessions.
650 $aBreeding and Genetic Improvement
650 $aGenetic resources
650 $aMandioca
650 $aManihot Esculenta
653 $aMelhoramento genético
700 1 $aSOARES, T. L.
700 1 $aROSSI, M. L.
700 1 $aALVES, A. A. C.
700 1 $aSANTOS, F. de A. R. dos
700 1 $aSOUZA, F. V. D.
773 $tActa Botanica Brasilica$gv. 26, n. 2, p. 350-356, 2012.
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Registro original: |
Embrapa Mandioca e Fruticultura (CNPMF) |
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Biblioteca |
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Cutter |
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Registro Completo
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Biblioteca(s): |
Embrapa Agropecuária Oeste; Embrapa Cerrados; Embrapa Trigo. |
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Data corrente: |
25/11/2021 |
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Data da última atualização: |
07/01/2022 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Circulação/Nível: |
A - 1 |
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Autoria: |
ASCARI, J. P.; BARRO, J. P.; SANTANA, F. M.; PADUA, J. M. V.; MACIEL, J. L. N.; LAU, D.; TORRES, G. A. M.; SBALCHEIRO, C. C.; SEIXAS, C. D. S.; GOULART, A. C. P.; SUSSEL, A. A. B.; SCHIPANSKI, C. A.; CHAGAS, D. F.; COELHO, M. A. O.; MONTECELLI, T. D. N.; AMARAL, D. R.; CUSTÓDIO, A. A. P.; MOREIRA, L. S. O.; UTIAMADA, C. M.; VENÂNCIO, W. S.; GOUSSAIN, R. C. S.; ALVES, K. S.; DEL PONTE, E. M. |
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Afiliação: |
JOÃO P. ASCARI, Departamento de Fitopatologia, Universidade Federal de Viçosa, Viçosa, 36570-900, MG, Brazil; JHONATAN P. BARRO, Departamento de Fitopatologia, Universidade Federal de Viçosa, Viçosa, 36570-900, MG, Brazil; FLAVIO MARTINS SANTANA, CNPT; JOSÉ M. V. PADUA, Departamento de Agricultura, Universidade Federal de Lavras, Lavras, 37200-900, MG, Brazil; JOAO LEODATO NUNES MACIEL, CNPT; DOUGLAS LAU, CNPT; GISELE ABIGAIL MONTAN TORRES, CNPT; CHEILA CRISTINA SBALCHEIRO, CNPT; CLAUDINE DINALI SANTOS SEIXAS, CNPSO; AUGUSTO CESAR PEREIRA GOULART, CPAO; ANGELO APARECIDO BARBOSA SUSSEL, CPAC; CARLOS A. SCHIPANSKI, G12 Agro Pesquisa e Consultoria Agronômica, Guarapuava, 85015-344, PR, Brazil; DÉBORA F. CHAGAS, G12 Agro Pesquisa e Consultoria Agronômica, Guarapuava, 85015-344, PR, Brazil; MAURÍCIO A. O. COELHO, Empresa de Pesquisa Agropecuária de Minas Gerais, Patos de Minas, 38700-970, MG, Brazil; TATIANE D. N. MONTECELLI, Coodetec, Cascavel, 85818-650, PR, Brazil; DANIEL R. AMARAL, Instituto Federal do Triângulo Mineiro Uberaba, 38064-790, MG, Brazil; ADRIANO A. P. CUSTÓDIO, Área de Proteção de Plantas, Instituto Agronômico do Paraná, Londrina, 86047-902, PR, Brazil; LUCAS S. O. MOREIRA, Área de Proteção de Plantas, Instituto Agronômico do Paraná, Londrina, 86047-902, PR, Brazil; CARLOS M. UTIAMADA, Tagro, Londrina, 86070-460, PR, Brazil; WILSON S. VENÂNCIO, Estação Experimental Agrícola Campos Gerais, Palmeira, 84130-000, PR, Brazil; RITA C. S. GOUSSAIN, Instituto Federal do Mato Grosso, Campo Verde, 78840-000, MT, Brazil; KAIQUE S. ALVES, Departamento de Fitopatologia, Universidade Federal de Viçosa, Viçosa, 36570-900, MG, Brazil; EMERSON M. DEL PONTE, Departamento de Fitopatologia, Universidade Federal de Viçosa, Viçosa, 36570-900, MG, Brazil. |
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Título: |
Sequential post-heading applications for controlling wheat blast: a nine-tear summary of fungicide performance in Brazil. |
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Ano de publicação: |
2021 |
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Fonte/Imprenta: |
Plant Disease, PDIS-06-21-1183-RE Jul. 2021. |
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Idioma: |
Inglês |
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Conteúdo: |
Wheat blast, caused by Pyricularia oryzae Triticum (PoT) lineage, is a major constraint to wheat production, mainly in the tropics of Brazil where severe epidemics have been more frequent. We analyzed disease and wheat yield data from uniform field trials conducted during nine years (2012 to 2020) in order to assess whether the percent control and yield response were influenced by fungicide type, region (tropical or subtropical), and year. Six treatments were selected, all evaluated in at least 19 trials. Two ungicides were applied as solo active ingredients: MANCozeb, and TEBUconazole, and four were premixes: AZOXystrobin + TEBU, TriFLoXystrobin + PROThioconazole, TFLX + TEBU, and PYRAclostrobin + EPOXiconazole. Percent control, calculated from back- ransforming estimates by a meta-analysis network model fitted to the log of the means, ranged from 43 to 58%, with all but PYRA + EPOX showing efficacy greater than 52% on average, not differing among them. The variation in both efficacy and yield response was explained by region and all but TEBU performed better in the subtropics Than in the tropics. Yield response from using three sequential sprays was around two times
greater in the subtropics (319 to 532 kg/ha) than in the tropics (149 to 241.3 kg/ha). No significant decline in fungicide efficacy or yield response was observed in nine years of study for any of the fungicides. Our results reinforce the need to improve control by adopting an integrated management approach in the tropics given the poorer performance and lower profitability, especially for the premixes, than in the subtropics. Keywords: Pyricularia oryzae, chemical control, profitability, meta-analysis MenosWheat blast, caused by Pyricularia oryzae Triticum (PoT) lineage, is a major constraint to wheat production, mainly in the tropics of Brazil where severe epidemics have been more frequent. We analyzed disease and wheat yield data from uniform field trials conducted during nine years (2012 to 2020) in order to assess whether the percent control and yield response were influenced by fungicide type, region (tropical or subtropical), and year. Six treatments were selected, all evaluated in at least 19 trials. Two ungicides were applied as solo active ingredients: MANCozeb, and TEBUconazole, and four were premixes: AZOXystrobin + TEBU, TriFLoXystrobin + PROThioconazole, TFLX + TEBU, and PYRAclostrobin + EPOXiconazole. Percent control, calculated from back- ransforming estimates by a meta-analysis network model fitted to the log of the means, ranged from 43 to 58%, with all but PYRA + EPOX showing efficacy greater than 52% on average, not differing among them. The variation in both efficacy and yield response was explained by region and all but TEBU performed better in the subtropics Than in the tropics. Yield response from using three sequential sprays was around two times
greater in the subtropics (319 to 532 kg/ha) than in the tropics (149 to 241.3 kg/ha). No significant decline in fungicide efficacy or yield response was observed in nine years of study for any of the fungicides. Our results reinforce the need to improve control by adopting an integrated management approach ... Mostrar Tudo |
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Thesagro: |
Pyricularia Oryzae. |
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Thesaurus NAL: |
Chemical control; Meta-analysis; Profitability. |
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Categoria do assunto: |
F Plantas e Produtos de Origem Vegetal |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/228150/1/pdis-06-21-1183-re.pdf
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Marc: |
LEADER 02949naa a2200433 a 4500
001 2138882
005 2022-01-07
008 2021 bl uuuu u00u1 u #d
100 1 $aASCARI, J. P.
245 $aSequential post-heading applications for controlling wheat blast$ba nine-tear summary of fungicide performance in Brazil.$h[electronic resource]
260 $c2021
520 $aWheat blast, caused by Pyricularia oryzae Triticum (PoT) lineage, is a major constraint to wheat production, mainly in the tropics of Brazil where severe epidemics have been more frequent. We analyzed disease and wheat yield data from uniform field trials conducted during nine years (2012 to 2020) in order to assess whether the percent control and yield response were influenced by fungicide type, region (tropical or subtropical), and year. Six treatments were selected, all evaluated in at least 19 trials. Two ungicides were applied as solo active ingredients: MANCozeb, and TEBUconazole, and four were premixes: AZOXystrobin + TEBU, TriFLoXystrobin + PROThioconazole, TFLX + TEBU, and PYRAclostrobin + EPOXiconazole. Percent control, calculated from back- ransforming estimates by a meta-analysis network model fitted to the log of the means, ranged from 43 to 58%, with all but PYRA + EPOX showing efficacy greater than 52% on average, not differing among them. The variation in both efficacy and yield response was explained by region and all but TEBU performed better in the subtropics Than in the tropics. Yield response from using three sequential sprays was around two times greater in the subtropics (319 to 532 kg/ha) than in the tropics (149 to 241.3 kg/ha). No significant decline in fungicide efficacy or yield response was observed in nine years of study for any of the fungicides. Our results reinforce the need to improve control by adopting an integrated management approach in the tropics given the poorer performance and lower profitability, especially for the premixes, than in the subtropics. Keywords: Pyricularia oryzae, chemical control, profitability, meta-analysis
650 $aChemical control
650 $aMeta-analysis
650 $aProfitability
650 $aPyricularia Oryzae
700 1 $aBARRO, J. P.
700 1 $aSANTANA, F. M.
700 1 $aPADUA, J. M. V.
700 1 $aMACIEL, J. L. N.
700 1 $aLAU, D.
700 1 $aTORRES, G. A. M.
700 1 $aSBALCHEIRO, C. C.
700 1 $aSEIXAS, C. D. S.
700 1 $aGOULART, A. C. P.
700 1 $aSUSSEL, A. A. B.
700 1 $aSCHIPANSKI, C. A.
700 1 $aCHAGAS, D. F.
700 1 $aCOELHO, M. A. O.
700 1 $aMONTECELLI, T. D. N.
700 1 $aAMARAL, D. R.
700 1 $aCUSTÓDIO, A. A. P.
700 1 $aMOREIRA, L. S. O.
700 1 $aUTIAMADA, C. M.
700 1 $aVENÂNCIO, W. S.
700 1 $aGOUSSAIN, R. C. S.
700 1 $aALVES, K. S.
700 1 $aDEL PONTE, E. M.
773 $tPlant Disease, PDIS-06-21-1183-RE Jul. 2021.
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