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 | Acesso ao texto completo restrito à biblioteca da Embrapa Milho e Sorgo. Para informações adicionais entre em contato com cnpms.biblioteca@embrapa.br. |
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Registro Completo |
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Biblioteca(s): |
Embrapa Milho e Sorgo. |
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Data corrente: |
18/08/2011 |
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Data da última atualização: |
06/08/2021 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
SOUZA, T. C. de; MAGALHAES, P. C.; PEREIRA, F. J.; CASTRO, E. M. de; PARENTONI, S. N. |
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Afiliação: |
PAULO CESAR MAGALHAES, CNPMS; SIDNEY NETTO PARENTONI, CNPMS. |
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Título: |
Morpho-physiology and maize grain yield under periodic soil flooding in successive selection cycles. |
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Ano de publicação: |
2011 |
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Fonte/Imprenta: |
Acta Physiologiae Plantarum, v. 33, p. 1877-1885, 2011. |
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DOI: |
DOI 10.1007/s11738-011-0731-y |
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Idioma: |
Português |
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Conteúdo: |
This study was carried out to evaluate maize plants of different recurrent selection cycles of the variety (Zea mays L. Saracura-BRS-4154) regarded to genetic gains, morphophysiology, and grain yield, achieved over the selection cycles under intermittent flooding of the soil. This variety has the capacity to survive and produce in temporarily flooded soils and was developed by the National Maize and Sorghum Research Center (EMBRAPA). The experiment was conducted in greenhouse by using ten alternating selection cycles (Cycle 1?18) and BR107 a variety known for its susceptibility to flooding. The flooding initiated at six-leaf stage by applying 50 mm of water three times a week. At flowering, the following parameters were evaluated: rate of leaf photosynthesis, stomatal conductance, intercellular CO2 concentration, transpiration rate, photosynthetically active leaf area, root porosity, relative chlorophyll content, grain yield, harvest index, ear length, and interval between male and female flowering. Yield as a function of root porosity and photosynthesis were also evaluated. An index was created in this study, in order to help the discussion of the characteristics evaluated, it was called ??Relative Tolerance Value?RTV??, only gaseous exchange measurements was not included in this index. By the way, it was observed throughout the selection cycles an increase in all gaseous exchange parameters, being the cycle 18, the one which presented the greatest averages. RTV for leaf area showed the greatest values for cycles 7 and 18, whereas root porosity, chlorophyll relative content, and harvest index,the greater RTV values were found in cycles 17 and 18. The largest grain yield RTV was observed in cycle 7, followed by cycles 13, 15, and 18. Flooding resulted in longer Anthesis-Silking Interval, especially for the first cycles. At flooding condition, grain yield was strongly related to root porosity (R2=0.66). These results showed that the selection cycles of ??Saracura?? maize improved some morphophysiologic characters, which favor their survival in flooded environments, also resulting in higher productivity. MenosThis study was carried out to evaluate maize plants of different recurrent selection cycles of the variety (Zea mays L. Saracura-BRS-4154) regarded to genetic gains, morphophysiology, and grain yield, achieved over the selection cycles under intermittent flooding of the soil. This variety has the capacity to survive and produce in temporarily flooded soils and was developed by the National Maize and Sorghum Research Center (EMBRAPA). The experiment was conducted in greenhouse by using ten alternating selection cycles (Cycle 1?18) and BR107 a variety known for its susceptibility to flooding. The flooding initiated at six-leaf stage by applying 50 mm of water three times a week. At flowering, the following parameters were evaluated: rate of leaf photosynthesis, stomatal conductance, intercellular CO2 concentration, transpiration rate, photosynthetically active leaf area, root porosity, relative chlorophyll content, grain yield, harvest index, ear length, and interval between male and female flowering. Yield as a function of root porosity and photosynthesis were also evaluated. An index was created in this study, in order to help the discussion of the characteristics evaluated, it was called ??Relative Tolerance Value?RTV??, only gaseous exchange measurements was not included in this index. By the way, it was observed throughout the selection cycles an increase in all gaseous exchange parameters, being the cycle 18, the one which presented the greatest averages. RTV for leaf ar... Mostrar Tudo |
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Palavras-Chave: |
Hipoxia. |
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Thesagro: |
Anoxia; Milho; Zea Mays. |
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Thesaurus Nal: |
Flooding tolerance; Gas exchange. |
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Categoria do assunto: |
W Química e Física |
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Marc: |
LEADER 02882naa a2200253 a 4500
001 1898273
005 2021-08-06
008 2011 bl uuuu u00u1 u #d
024 7 $aDOI 10.1007/s11738-011-0731-y$2DOI
100 1 $aSOUZA, T. C. de
245 $aMorpho-physiology and maize grain yield under periodic soil flooding in successive selection cycles.$h[electronic resource]
260 $c2011
520 $aThis study was carried out to evaluate maize plants of different recurrent selection cycles of the variety (Zea mays L. Saracura-BRS-4154) regarded to genetic gains, morphophysiology, and grain yield, achieved over the selection cycles under intermittent flooding of the soil. This variety has the capacity to survive and produce in temporarily flooded soils and was developed by the National Maize and Sorghum Research Center (EMBRAPA). The experiment was conducted in greenhouse by using ten alternating selection cycles (Cycle 1?18) and BR107 a variety known for its susceptibility to flooding. The flooding initiated at six-leaf stage by applying 50 mm of water three times a week. At flowering, the following parameters were evaluated: rate of leaf photosynthesis, stomatal conductance, intercellular CO2 concentration, transpiration rate, photosynthetically active leaf area, root porosity, relative chlorophyll content, grain yield, harvest index, ear length, and interval between male and female flowering. Yield as a function of root porosity and photosynthesis were also evaluated. An index was created in this study, in order to help the discussion of the characteristics evaluated, it was called ??Relative Tolerance Value?RTV??, only gaseous exchange measurements was not included in this index. By the way, it was observed throughout the selection cycles an increase in all gaseous exchange parameters, being the cycle 18, the one which presented the greatest averages. RTV for leaf area showed the greatest values for cycles 7 and 18, whereas root porosity, chlorophyll relative content, and harvest index,the greater RTV values were found in cycles 17 and 18. The largest grain yield RTV was observed in cycle 7, followed by cycles 13, 15, and 18. Flooding resulted in longer Anthesis-Silking Interval, especially for the first cycles. At flooding condition, grain yield was strongly related to root porosity (R2=0.66). These results showed that the selection cycles of ??Saracura?? maize improved some morphophysiologic characters, which favor their survival in flooded environments, also resulting in higher productivity.
650 $aFlooding tolerance
650 $aGas exchange
650 $aAnoxia
650 $aMilho
650 $aZea Mays
653 $aHipoxia
700 1 $aMAGALHAES, P. C.
700 1 $aPEREIRA, F. J.
700 1 $aCASTRO, E. M. de
700 1 $aPARENTONI, S. N.
773 $tActa Physiologiae Plantarum$gv. 33, p. 1877-1885, 2011.
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Registro original: |
Embrapa Milho e Sorgo (CNPMS) |
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Biblioteca(s): |
Embrapa Meio Ambiente. |
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Data corrente: |
29/02/2012 |
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Data da última atualização: |
29/02/2012 |
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Tipo da produção científica: |
Artigo em Anais de Congresso |
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Autoria: |
FERREIRA JUNIOR, O. L.; VILELA, E. S. D.; GIOVEDY, J. S.; SILVA, C. M. M. de S.; MELO, I. S. de. |
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Afiliação: |
OSVALDO L. FERREIRA JÚNIOR, ETECAP; ELKE SIMONI DIAS VILELA, CNPMA; JONATHAN S. GIOVEDY, FAJ; CELIA MARIA MAGANHOTTO DE SOUZA SILVA, FAJ; ITAMAR SOARES DE MELO, CNPMA. |
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Título: |
Atividade de enzimas ligninocelulolíticas envolvidas na degradação do bagaço de cana-de-açúcar por linhagens fúngicas da Caatinga. |
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Ano de publicação: |
2011 |
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Fonte/Imprenta: |
In: CONGRESSO INTERINSTITUCIONAL DE INICIAÇÃO CIENTÍFICA, 5., 2011, Campinas. Anais... Campinas: Embrapa Monitoramento por Satélite, 2011. 1 CD ROM. |
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Páginas: |
Nº 11419. |
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Idioma: |
Português |
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Conteúdo: |
Resumo: Atualmente o bagaço de cana-de-açúcar é o maior resíduo da agroindústria brasileira, assim sendo, de alta importância que sejam desenvolvidas novas utilidades para o uso de tal substrato. Com esse fim, este trabalho teve por objetivo avaliar a atividade ligninocelulolítica de fungos isolados de serrapilheira da Caatinga. A seleção inicial foi feita em meio de cultivo contendo Remazol Brilliant Blue e observado o crescimento e a degradação de bagaço de cana com e sem tratamento químico. Destes, foi selecionada a linhagem fúngica 3.3 F2 na qual se observou uma atividade enzimática maior. Este isolado apresentou as seguintes atividades enzimáticas: Lignina Peroxidase (4,9046 U.L-1), Lacase (54,9148 U.L-1), Endoglucanase (4,4966 U.L-1), ?-glicosidase (5,1494 U.L-1) sendo que não foi verificada nenhuma atividade para as enzimas Manganês Peroxidase e Xilanase. Observou-se que a atividade enzimática foi maior no resíduo sem tratamento, em relação ao resíduo tratado. Os resultados obtidos sugerem a possibilidade da substituição do uso de enzimas, por linhagens fúngicas produtoras das mesmas para otimização do processo de produção de etanol de segunda geração. Abstract: Sugar cane bagasse nowadays is one of the biggest waste produced by Brazilian agroindustry, becoming relevant the development of new uses for it. The objective of this study was to evaluate the lignocellulolytic activity in sugar cane bagasse of fungi isolated from litter in Caatinga biome. Screening was performed on Petri dishes, where 4 isolates were selected for quantification of lignolytic enzyme by discoloration of Remazol Brilliant Blue, with growth observation and degradation of sugarcane bagasse with and without chemical treatment. From the fungal isolates, strain 3.3 F-2 showed increased activity and was selected for evaluation of lignocellulolytic enzymes. It showed the following enzymatic activities: LigninPeroxidase (4.9046 U.L-1), Laccase (54.9148 U.L 1), endoglucanase (4.4966 U.L-1), β-glucosidase (5.1494 U.L-1) and Manganese Peroxidase and Xylanase displayed no activity. The enzymes showed higher activity with the untreated material. These results suggest the possibility of replacing the use of enzymes for enzyme-producing fungal strains to optimize the process of ethanol production. MenosResumo: Atualmente o bagaço de cana-de-açúcar é o maior resíduo da agroindústria brasileira, assim sendo, de alta importância que sejam desenvolvidas novas utilidades para o uso de tal substrato. Com esse fim, este trabalho teve por objetivo avaliar a atividade ligninocelulolítica de fungos isolados de serrapilheira da Caatinga. A seleção inicial foi feita em meio de cultivo contendo Remazol Brilliant Blue e observado o crescimento e a degradação de bagaço de cana com e sem tratamento químico. Destes, foi selecionada a linhagem fúngica 3.3 F2 na qual se observou uma atividade enzimática maior. Este isolado apresentou as seguintes atividades enzimáticas: Lignina Peroxidase (4,9046 U.L-1), Lacase (54,9148 U.L-1), Endoglucanase (4,4966 U.L-1), ?-glicosidase (5,1494 U.L-1) sendo que não foi verificada nenhuma atividade para as enzimas Manganês Peroxidase e Xilanase. Observou-se que a atividade enzimática foi maior no resíduo sem tratamento, em relação ao resíduo tratado. Os resultados obtidos sugerem a possibilidade da substituição do uso de enzimas, por linhagens fúngicas produtoras das mesmas para otimização do processo de produção de etanol de segunda geração. Abstract: Sugar cane bagasse nowadays is one of the biggest waste produced by Brazilian agroindustry, becoming relevant the development of new uses for it. The objective of this study was to evaluate the lignocellulolytic activity in sugar cane bagasse of fungi isolated from litter in Caatinga biome. Screening was perfo... Mostrar Tudo |
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Palavras-Chave: |
Cana-de-açúcar. |
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Thesagro: |
Bagaço; Biodegradação; Caatinga; Enzima celulolítica. |
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Thesaurus NAL: |
Biodegradation; Cellulolytic microorganisms; Sugarcane bagasse. |
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Categoria do assunto: |
S Ciências Biológicas |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/54802/1/2011AA45.pdf
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Marc: |
LEADER 03291nam a2200265 a 4500
001 1916954
005 2012-02-29
008 2011 bl uuuu u00u1 u #d
100 1 $aFERREIRA JUNIOR, O. L.
245 $aAtividade de enzimas ligninocelulolíticas envolvidas na degradação do bagaço de cana-de-açúcar por linhagens fúngicas da Caatinga.$h[electronic resource]
260 $aIn: CONGRESSO INTERINSTITUCIONAL DE INICIAÇÃO CIENTÍFICA, 5., 2011, Campinas. Anais... Campinas: Embrapa Monitoramento por Satélite, 2011. 1 CD ROM.$c2011
300 $aNº 11419.
520 $aResumo: Atualmente o bagaço de cana-de-açúcar é o maior resíduo da agroindústria brasileira, assim sendo, de alta importância que sejam desenvolvidas novas utilidades para o uso de tal substrato. Com esse fim, este trabalho teve por objetivo avaliar a atividade ligninocelulolítica de fungos isolados de serrapilheira da Caatinga. A seleção inicial foi feita em meio de cultivo contendo Remazol Brilliant Blue e observado o crescimento e a degradação de bagaço de cana com e sem tratamento químico. Destes, foi selecionada a linhagem fúngica 3.3 F2 na qual se observou uma atividade enzimática maior. Este isolado apresentou as seguintes atividades enzimáticas: Lignina Peroxidase (4,9046 U.L-1), Lacase (54,9148 U.L-1), Endoglucanase (4,4966 U.L-1), ?-glicosidase (5,1494 U.L-1) sendo que não foi verificada nenhuma atividade para as enzimas Manganês Peroxidase e Xilanase. Observou-se que a atividade enzimática foi maior no resíduo sem tratamento, em relação ao resíduo tratado. Os resultados obtidos sugerem a possibilidade da substituição do uso de enzimas, por linhagens fúngicas produtoras das mesmas para otimização do processo de produção de etanol de segunda geração. Abstract: Sugar cane bagasse nowadays is one of the biggest waste produced by Brazilian agroindustry, becoming relevant the development of new uses for it. The objective of this study was to evaluate the lignocellulolytic activity in sugar cane bagasse of fungi isolated from litter in Caatinga biome. Screening was performed on Petri dishes, where 4 isolates were selected for quantification of lignolytic enzyme by discoloration of Remazol Brilliant Blue, with growth observation and degradation of sugarcane bagasse with and without chemical treatment. From the fungal isolates, strain 3.3 F-2 showed increased activity and was selected for evaluation of lignocellulolytic enzymes. It showed the following enzymatic activities: LigninPeroxidase (4.9046 U.L-1), Laccase (54.9148 U.L 1), endoglucanase (4.4966 U.L-1), β-glucosidase (5.1494 U.L-1) and Manganese Peroxidase and Xylanase displayed no activity. The enzymes showed higher activity with the untreated material. These results suggest the possibility of replacing the use of enzymes for enzyme-producing fungal strains to optimize the process of ethanol production.
650 $aBiodegradation
650 $aCellulolytic microorganisms
650 $aSugarcane bagasse
650 $aBagaço
650 $aBiodegradação
650 $aCaatinga
650 $aEnzima celulolítica
653 $aCana-de-açúcar
700 1 $aVILELA, E. S. D.
700 1 $aGIOVEDY, J. S.
700 1 $aSILVA, C. M. M. de S.
700 1 $aMELO, I. S. de
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