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Registro Completo |
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Biblioteca(s): |
Embrapa Semiárido. |
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Data corrente: |
22/06/2020 |
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Data da última atualização: |
22/06/2020 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
BARROS, B. G. de F.; FREITAS, A. D. S. de; TABOSA, J. N.; LYRA, M. do C. C. P. de; MERGULHÃO, A. C. do E. S.; SILVA, A. F. da; OLIVEIRA, W. da S.; FERNANDES JUNIOR, P. I.; SAMPAIO, E. V. de S. B. |
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Afiliação: |
Benaia Gonçalves de Franca Barros; Ana Dolores Santiago de Freitas; Jose Nildo Tabosa; Maria do Carmo Catanho Pereira de Lyra; Adalia Cavalcanti do Espirito Santo Mergulhão; Aleksandro Ferreira da Silva; Wagner da Silva Oliveira; PAULO IVAN FERNANDES JUNIOR, CPATSA; Everardo Valadares de Sá Barretto Sampaio. |
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Título: |
Biological nitrogen fixation in field-grown sorghum under different edaphoclimatic conditions is confirmed by N isotopic signatures. |
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Ano de publicação: |
2020 |
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Fonte/Imprenta: |
Nutrient Cycling in Agroecosystems, v. 117, p. 93-101, 2020. |
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DOI: |
https://doi.org/10.1007/s10705-020-10051-3 |
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Idioma: |
Inglês |
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Conteúdo: |
The association between sorghum and N2-fixing bacteria has been assessed only under limited conditions. We investigated biological nitrogen fixation (BNF) in situ in fifteen sorghum genotypes with dry or succulent culm types under five edaphoclimatic conditions. One randomized block experiment was established in each of five locations, from the humid to the semiarid regions of Pernambuco state, Brazil. BNF was estimated using the 15N natural abundance method by comparing the average d15N value of each sorghum genotype with those of the reference species. High levels of productivity, up to 22 Mg shoot biomass ha-1 in the 3-month cycle, were obtained where rainfall was high, and up to 5 Mg ha-1 was obtained under low rainfall. The nitrogen contents showed a similar pattern as biomass production, and the genotypes with the highest productivity accumulated from 200 to 300 kg N ha-1. BNF ranged from 55 to 78% of plant N in one location and from 36 to 56% in another location, but BNF did not occur in the other three locations. Although the factors that blocked effective symbiosis were not determined, symbiosis was not influenced by P or K availability. The proportion of N2 fixation was similar in the grainproducing, dry culm genotypes and in the sugar-rich, succulent culm genotypes. The sorghum genotypes fixed N2, reaching up to 218 kg ha-1 N, without inoculation with diazotrophs. Therefore, sorghum has a high potential to fix atmospheric N2, but the factors that block N2 fixation must be identified for crop management planning. MenosThe association between sorghum and N2-fixing bacteria has been assessed only under limited conditions. We investigated biological nitrogen fixation (BNF) in situ in fifteen sorghum genotypes with dry or succulent culm types under five edaphoclimatic conditions. One randomized block experiment was established in each of five locations, from the humid to the semiarid regions of Pernambuco state, Brazil. BNF was estimated using the 15N natural abundance method by comparing the average d15N value of each sorghum genotype with those of the reference species. High levels of productivity, up to 22 Mg shoot biomass ha-1 in the 3-month cycle, were obtained where rainfall was high, and up to 5 Mg ha-1 was obtained under low rainfall. The nitrogen contents showed a similar pattern as biomass production, and the genotypes with the highest productivity accumulated from 200 to 300 kg N ha-1. BNF ranged from 55 to 78% of plant N in one location and from 36 to 56% in another location, but BNF did not occur in the other three locations. Although the factors that blocked effective symbiosis were not determined, symbiosis was not influenced by P or K availability. The proportion of N2 fixation was similar in the grainproducing, dry culm genotypes and in the sugar-rich, succulent culm genotypes. The sorghum genotypes fixed N2, reaching up to 218 kg ha-1 N, without inoculation with diazotrophs. Therefore, sorghum has a high potential to fix atmospheric N2, but the factors that block N2 fixation... Mostrar Tudo |
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Palavras-Chave: |
Fixação biológica de nitrogênio; Técnica de abundância natural. |
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Thesagro: |
Bactéria; Fixação de Nitrogênio; Nitrogênio; Sorgo. |
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Thesaurus Nal: |
Biological control; Grain sorghum; Sorghum bicolor subsp. bicolor. |
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Categoria do assunto: |
G Melhoramento Genético |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/214133/1/Biological-nitrogen-fixation-2020.pdf
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Marc: |
LEADER 02683naa a2200337 a 4500
001 2123405
005 2020-06-22
008 2020 bl uuuu u00u1 u #d
024 7 $ahttps://doi.org/10.1007/s10705-020-10051-3$2DOI
100 1 $aBARROS, B. G. de F.
245 $aBiological nitrogen fixation in field-grown sorghum under different edaphoclimatic conditions is confirmed by N isotopic signatures.$h[electronic resource]
260 $c2020
520 $aThe association between sorghum and N2-fixing bacteria has been assessed only under limited conditions. We investigated biological nitrogen fixation (BNF) in situ in fifteen sorghum genotypes with dry or succulent culm types under five edaphoclimatic conditions. One randomized block experiment was established in each of five locations, from the humid to the semiarid regions of Pernambuco state, Brazil. BNF was estimated using the 15N natural abundance method by comparing the average d15N value of each sorghum genotype with those of the reference species. High levels of productivity, up to 22 Mg shoot biomass ha-1 in the 3-month cycle, were obtained where rainfall was high, and up to 5 Mg ha-1 was obtained under low rainfall. The nitrogen contents showed a similar pattern as biomass production, and the genotypes with the highest productivity accumulated from 200 to 300 kg N ha-1. BNF ranged from 55 to 78% of plant N in one location and from 36 to 56% in another location, but BNF did not occur in the other three locations. Although the factors that blocked effective symbiosis were not determined, symbiosis was not influenced by P or K availability. The proportion of N2 fixation was similar in the grainproducing, dry culm genotypes and in the sugar-rich, succulent culm genotypes. The sorghum genotypes fixed N2, reaching up to 218 kg ha-1 N, without inoculation with diazotrophs. Therefore, sorghum has a high potential to fix atmospheric N2, but the factors that block N2 fixation must be identified for crop management planning.
650 $aBiological control
650 $aGrain sorghum
650 $aSorghum bicolor subsp. bicolor
650 $aBactéria
650 $aFixação de Nitrogênio
650 $aNitrogênio
650 $aSorgo
653 $aFixação biológica de nitrogênio
653 $aTécnica de abundância natural
700 1 $aFREITAS, A. D. S. de
700 1 $aTABOSA, J. N.
700 1 $aLYRA, M. do C. C. P. de
700 1 $aMERGULHÃO, A. C. do E. S.
700 1 $aSILVA, A. F. da
700 1 $aOLIVEIRA, W. da S.
700 1 $aFERNANDES JUNIOR, P. I.
700 1 $aSAMPAIO, E. V. de S. B.
773 $tNutrient Cycling in Agroecosystems$gv. 117, p. 93-101, 2020.
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Registro original: |
Embrapa Semiárido (CPATSA) |
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 | Acesso ao texto completo restrito à biblioteca da Embrapa Recursos Genéticos e Biotecnologia. Para informações adicionais entre em contato com cenargen.biblioteca@embrapa.br. |
Registro Completo
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Biblioteca(s): |
Embrapa Recursos Genéticos e Biotecnologia. |
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Data corrente: |
29/12/2010 |
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Data da última atualização: |
02/05/2024 |
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Tipo da produção científica: |
Resumo em Anais de Congresso |
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Autoria: |
SILVA, K. F. A. de S; MICHEREFF FILHO, M.; SILVA, J. B. T. da; MARTINS, I.; ISAIAS, C. O.; RESENDE, F. V.; LIZ, R. S. de; BARBOZA, E. A.; MELLO, S. C. M. de. |
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Afiliação: |
KARLA FERNANDA AYRES DE SOUZA SILVA, CENARGEN; MIGUEL MICHEREFF FILHO, CNPH; JOAO BATISTA TAVARES DA SILVA, CENARGEN; IRENE MARTINS, CENARGEN; CAROLINA OLIVEIRA ISAIAS; FRANCISCO VILELA RESENDE, CNPH; RONALDO SETTI DE LIZ, CNPH; ELENICE ALVES BARBOZA; SUELI CORREA MARQUES DE MELLO, CENARGEN. |
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Título: |
Dinâmica populacional de fungos benéficos em solos nos sistemas de cultivo convencional e orgânico de morangueiro. |
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Ano de publicação: |
2010 |
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Fonte/Imprenta: |
In: CONGRESSO BRASILEIRO DE RECURSOS GENÉTICOS; WORKSHOP EM BIOPROSPECÇÃO E CONSERVAÇÃO DE PLANTAS NATIVAS DO SEMI-ÁRIDO, 3.; WORKSHOP INTERNACIONAL SOBRE BIOENERGIA E MEIO AMBIENTE, 2010, Salvador. Bancos de germoplasma: descobrir a riqueza, garantir o futuro: anais. Brasília, DF: Embrapa Recursos Genéticos e Biotecnologia, 2010. |
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Descrição Física: |
CD-ROM |
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Idioma: |
Português |
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Palavras-Chave: |
Fungos antagonistas; Fungos entomopatogênicos; Microrganismos benéficos. |
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Thesagro: |
Sistema de Produção. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 01086nam a2200253 a 4500
001 1871270
005 2024-05-02
008 2010 bl uuuu u01u1 u #d
100 1 $aSILVA, K. F. A. de S
245 $aDinâmica populacional de fungos benéficos em solos nos sistemas de cultivo convencional e orgânico de morangueiro.
260 $aIn: CONGRESSO BRASILEIRO DE RECURSOS GENÉTICOS; WORKSHOP EM BIOPROSPECÇÃO E CONSERVAÇÃO DE PLANTAS NATIVAS DO SEMI-ÁRIDO, 3.; WORKSHOP INTERNACIONAL SOBRE BIOENERGIA E MEIO AMBIENTE, 2010, Salvador. Bancos de germoplasma: descobrir a riqueza, garantir o futuro: anais. Brasília, DF: Embrapa Recursos Genéticos e Biotecnologia$c2010
300 $cCD-ROM
650 $aSistema de Produção
653 $aFungos antagonistas
653 $aFungos entomopatogênicos
653 $aMicrorganismos benéficos
700 1 $aMICHEREFF FILHO, M.
700 1 $aSILVA, J. B. T. da
700 1 $aMARTINS, I.
700 1 $aISAIAS, C. O.
700 1 $aRESENDE, F. V.
700 1 $aLIZ, R. S. de
700 1 $aBARBOZA, E. A.
700 1 $aMELLO, S. C. M. de
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