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Registro Completo |
Biblioteca(s): |
Embrapa Agrobiologia. |
Data corrente: |
23/10/2003 |
Data da última atualização: |
23/10/2003 |
Autoria: |
ALVES, B. J. R.; BODDEY, R. M.; URQUIAGA, S. |
Título: |
The Success of BNF in soybean in Brazil. |
Ano de publicação: |
2003 |
Fonte/Imprenta: |
Plant and Soil, Dordrecht, v. 252, p. 1-9, 2003. |
Idioma: |
Inglês |
Conteúdo: |
Approximately forty years after commercial cropping of soybean in Brazil began, the total area under this crop has reached over 13 M ha with a mean productivity of 2400 kg ha-l. Soybean varieties introduced from the USA and varieties rescued from early introductions in Brazilian territory were part of the Brazilian soybean-breeding programme which spread the crop from high to low latitudes. Disease-resistance, pest-resistance. tolerance to low fertility soils, as well as production of plants with pods sufficiently high above the ground for efficient mechanica1 harvesting. were all aims of the programme. Although BNF was not explicitly considered as a trait for selection in the breeding/selection programme, maximisation of biological nitrogen fixation (BNF) was favoured by conducting selection and breeding trials on soils low in N. in which the seeds were inoculated with efficient Bradyrhizobium inoculants but without N fertilizer application. Several efficient imported Brad)'rhizobium strains were found to be unable to compete with native soil micro-flora and other previously-introduced Brad)'rhizobium strains. Surprisingly. after being in the soil for many years one or two of these strains had become more competitive while maintaining their high BNF capacity. Today. these strains are included amongst the recommended Brazilian inoculants and have promoted significant improvements in grain yields. The breeding of soybeans in conditions that made grain yield highly dependent on BNF. and the continuous attention paid to the selection of Bradyrhizobium strains appropriate for the newly released varieties, have been the main contributors to today's high yields and their great benefit to the Brazilian economy. There seems to be no reason why this ongoing research programme should not serve as an appropriate model to improve BNF inputs to grain legume." in other countries of the world. MenosApproximately forty years after commercial cropping of soybean in Brazil began, the total area under this crop has reached over 13 M ha with a mean productivity of 2400 kg ha-l. Soybean varieties introduced from the USA and varieties rescued from early introductions in Brazilian territory were part of the Brazilian soybean-breeding programme which spread the crop from high to low latitudes. Disease-resistance, pest-resistance. tolerance to low fertility soils, as well as production of plants with pods sufficiently high above the ground for efficient mechanica1 harvesting. were all aims of the programme. Although BNF was not explicitly considered as a trait for selection in the breeding/selection programme, maximisation of biological nitrogen fixation (BNF) was favoured by conducting selection and breeding trials on soils low in N. in which the seeds were inoculated with efficient Bradyrhizobium inoculants but without N fertilizer application. Several efficient imported Brad)'rhizobium strains were found to be unable to compete with native soil micro-flora and other previously-introduced Brad)'rhizobium strains. Surprisingly. after being in the soil for many years one or two of these strains had become more competitive while maintaining their high BNF capacity. Today. these strains are included amongst the recommended Brazilian inoculants and have promoted significant improvements in grain yields. The breeding of soybeans in conditions that made grain yield highly dependent o... Mostrar Tudo |
Palavras-Chave: |
Biological nitrogen fixation; BNF; FBN; Fixação biológica de nitrogênio; Soybean. |
Thesagro: |
Glycine Max; Soja. |
Thesaurus Nal: |
Bradyrhizobium. |
Categoria do assunto: |
-- |
Marc: |
LEADER 02525naa a2200241 a 4500 001 1624714 005 2003-10-23 008 2003 bl --- 0-- u #d 100 1 $aALVES, B. J. R. 245 $aThe Success of BNF in soybean in Brazil. 260 $c2003 520 $aApproximately forty years after commercial cropping of soybean in Brazil began, the total area under this crop has reached over 13 M ha with a mean productivity of 2400 kg ha-l. Soybean varieties introduced from the USA and varieties rescued from early introductions in Brazilian territory were part of the Brazilian soybean-breeding programme which spread the crop from high to low latitudes. Disease-resistance, pest-resistance. tolerance to low fertility soils, as well as production of plants with pods sufficiently high above the ground for efficient mechanica1 harvesting. were all aims of the programme. Although BNF was not explicitly considered as a trait for selection in the breeding/selection programme, maximisation of biological nitrogen fixation (BNF) was favoured by conducting selection and breeding trials on soils low in N. in which the seeds were inoculated with efficient Bradyrhizobium inoculants but without N fertilizer application. Several efficient imported Brad)'rhizobium strains were found to be unable to compete with native soil micro-flora and other previously-introduced Brad)'rhizobium strains. Surprisingly. after being in the soil for many years one or two of these strains had become more competitive while maintaining their high BNF capacity. Today. these strains are included amongst the recommended Brazilian inoculants and have promoted significant improvements in grain yields. The breeding of soybeans in conditions that made grain yield highly dependent on BNF. and the continuous attention paid to the selection of Bradyrhizobium strains appropriate for the newly released varieties, have been the main contributors to today's high yields and their great benefit to the Brazilian economy. There seems to be no reason why this ongoing research programme should not serve as an appropriate model to improve BNF inputs to grain legume." in other countries of the world. 650 $aBradyrhizobium 650 $aGlycine Max 650 $aSoja 653 $aBiological nitrogen fixation 653 $aBNF 653 $aFBN 653 $aFixação biológica de nitrogênio 653 $aSoybean 700 1 $aBODDEY, R. M. 700 1 $aURQUIAGA, S. 773 $tPlant and Soil, Dordrecht$gv. 252, p. 1-9, 2003.
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Embrapa Agrobiologia (CNPAB) |
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Biblioteca(s): |
Embrapa Arroz e Feijão. |
Data corrente: |
05/01/2016 |
Data da última atualização: |
06/03/2024 |
Tipo da produção científica: |
Comunicado Técnico/Recomendações Técnicas |
Autoria: |
KOAKUZU, S. N.; ARAÚJO, E. J. de; BASSINELLO, P. Z.; CARVALHO, R. N.; TEIXEIRA, M. C. |
Afiliação: |
SELMA NAKAMOTO KOAKUZU, CNPAF; EDMAR JOSE DE ARAUJO, CNPAF; PRISCILA ZACZUK BASSINELLO, CNPAF; ROSANGELA NUNES CARVALHO, CNPAF; MAURO CESAR TEIXEIRA, CNPAF. |
Título: |
Procedimento para determinação de amido resistente, amido não resistente (solúvel) e total. |
Ano de publicação: |
2015 |
Fonte/Imprenta: |
Santo Antônio de Goiás: Embrapa Arroz e Feijão, 2015. |
Páginas: |
7 p. |
Série: |
(Embrapa Arroz e Feijão. Comunicado técnico, 228). |
ISSN: |
1678-961X |
Idioma: |
Português |
Conteúdo: |
O presente trabalho descreve detalhadamente o procedimento baseado no método oficial da Association of Official Analytical Chemists de 2002 para determinação de amido resistente, amido não resistente e total, utilizando um kit de reagentes da marca Megazyme International Ireland de 2011, especialmente desenvolvido para esta finalidade e vendido comercialmente. Neste procedimento, foram feitas algumas adaptações tendo em vista a melhoria da repetibilidade em etapas críticas do processo e os equipamentos e materiais mais comuns em laboratórios de análise de alimentos, possibilitando a reprodução do método por outros usuários. Além disso, foi realizado um estudo da variabilidade do procedimento quando aplicado em um experimento com amostras de arroz. |
Thesagro: |
Amido; Análise de alimento; Arroz; Hidrólise; Reação química. |
Categoria do assunto: |
Q Alimentos e Nutrição Humana |
URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/136590/1/CNPAF-CT228.pdf
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Marc: |
LEADER 01538nam a2200253 a 4500 001 2032898 005 2024-03-06 008 2015 bl uuuu u0uu1 u #d 022 $a1678-961X 100 1 $aKOAKUZU, S. N. 245 $aProcedimento para determinação de amido resistente, amido não resistente (solúvel) e total.$h[electronic resource] 260 $aSanto Antônio de Goiás: Embrapa Arroz e Feijão$c2015 300 $a7 p. 490 $a(Embrapa Arroz e Feijão. Comunicado técnico, 228). 520 $aO presente trabalho descreve detalhadamente o procedimento baseado no método oficial da Association of Official Analytical Chemists de 2002 para determinação de amido resistente, amido não resistente e total, utilizando um kit de reagentes da marca Megazyme International Ireland de 2011, especialmente desenvolvido para esta finalidade e vendido comercialmente. Neste procedimento, foram feitas algumas adaptações tendo em vista a melhoria da repetibilidade em etapas críticas do processo e os equipamentos e materiais mais comuns em laboratórios de análise de alimentos, possibilitando a reprodução do método por outros usuários. Além disso, foi realizado um estudo da variabilidade do procedimento quando aplicado em um experimento com amostras de arroz. 650 $aAmido 650 $aAnálise de alimento 650 $aArroz 650 $aHidrólise 650 $aReação química 700 1 $aARAÚJO, E. J. de 700 1 $aBASSINELLO, P. Z. 700 1 $aCARVALHO, R. N. 700 1 $aTEIXEIRA, M. C.
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