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Registro Completo |
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Biblioteca(s): |
Embrapa Cerrados. |
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Data corrente: |
09/06/1992 |
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Data da última atualização: |
09/06/1992 |
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Autoria: |
SA, N. M. H.; SCOTTI, M. R. M. L.; VARGAS, M. A. T.; DOBEREINER, J. |
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Título: |
Resistencia natural a estreptomicina e eficiencia de estirpes de Rhizobium nativas nos cerrados associados a Stylosanthes. |
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Ano de publicação: |
1983 |
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Fonte/Imprenta: |
Pesquisa Agropecuaria Brasileira, Brasilia, v.18, n.3, p.213-218, mar. 1983. |
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Idioma: |
Português |
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Conteúdo: |
Foram efetuados isolamentos de Rhizobium sp nativos nos Cerrados, associados a Stylosanthes spp, com o objetivo de estudar a natureza dos fatores que interferem no estabelecimento das estripes de Rhizobium inoculadas, e de avaliar o potencial de fixacao de N2 das estirpes nativas ou superiores a 40 micron g/ml, enquanto que apenas 10% dentre 92 estripes isoladas em solo sob Cerrado virgem apresentaram esse nivel de resistencia. Esses dados sugerem que modificacoes ecologicas promovidas pelo cultivo dos Cerrados podem induzir a vantagens competitivas para estripes de Rhizobium sp, resistentes a estreptomicina. Experimentos conduzidos em vasos Leonard com areia e solucao nutritiva esterilizada indicaram que cerca de 61% das estripes isoladas em S. guianensis var. Canescens e S. grandifolia eram pouco ou moderadamente efetivas no hospedeiro homologo, enquanto que apenas 14% das estripes apresentaram um nivel elevado de fixacao do N2. Esse baixo indice de estirpes eficientes sugere a necessidade de se iniciar um trabalho de selecao de Rhizobium sp. Adaptado as condicoes dos Cerrados, visando a producao de inoculantes de alta qualidade para a regiao. |
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Palavras-Chave: |
Avaliacao; Stylosanthes grandifolia. |
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Thesagro: |
Cerrado; Fixação de Nitrogênio; Inoculação; Rhizobium; Stylosanthes Guianensis. |
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Thesaurus Nal: |
Stylosanthes. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 01940naa a2200253 a 4500
001 1547346
005 1992-06-09
008 1983 bl uuuu u00u1 u #d
100 1 $aSA, N. M. H.
245 $aResistencia natural a estreptomicina e eficiencia de estirpes de Rhizobium nativas nos cerrados associados a Stylosanthes.
260 $c1983
520 $aForam efetuados isolamentos de Rhizobium sp nativos nos Cerrados, associados a Stylosanthes spp, com o objetivo de estudar a natureza dos fatores que interferem no estabelecimento das estripes de Rhizobium inoculadas, e de avaliar o potencial de fixacao de N2 das estirpes nativas ou superiores a 40 micron g/ml, enquanto que apenas 10% dentre 92 estripes isoladas em solo sob Cerrado virgem apresentaram esse nivel de resistencia. Esses dados sugerem que modificacoes ecologicas promovidas pelo cultivo dos Cerrados podem induzir a vantagens competitivas para estripes de Rhizobium sp, resistentes a estreptomicina. Experimentos conduzidos em vasos Leonard com areia e solucao nutritiva esterilizada indicaram que cerca de 61% das estripes isoladas em S. guianensis var. Canescens e S. grandifolia eram pouco ou moderadamente efetivas no hospedeiro homologo, enquanto que apenas 14% das estripes apresentaram um nivel elevado de fixacao do N2. Esse baixo indice de estirpes eficientes sugere a necessidade de se iniciar um trabalho de selecao de Rhizobium sp. Adaptado as condicoes dos Cerrados, visando a producao de inoculantes de alta qualidade para a regiao.
650 $aStylosanthes
650 $aCerrado
650 $aFixação de Nitrogênio
650 $aInoculação
650 $aRhizobium
650 $aStylosanthes Guianensis
653 $aAvaliacao
653 $aStylosanthes grandifolia
700 1 $aSCOTTI, M. R. M. L.
700 1 $aVARGAS, M. A. T.
700 1 $aDOBEREINER, J.
773 $tPesquisa Agropecuaria Brasileira, Brasilia$gv.18, n.3, p.213-218, mar. 1983.
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Registro original: |
Embrapa Cerrados (CPAC) |
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Origem |
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Registro |
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Registro Completo
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Biblioteca(s): |
Embrapa Semiárido. |
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Data corrente: |
18/02/2021 |
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Data da última atualização: |
18/02/2021 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Circulação/Nível: |
B - 1 |
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Autoria: |
COSTA, R. R. da; FERREIRA, T. de O.; RODRIGUES, A. A. M.; ANDRADE NETO, E. R. de; LIMA, M. A. C. de. |
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Afiliação: |
Rayssa Ribeiro da Costa; Talita de Oliveira Ferreira; Antônio Augusto Marques Rodrigues; Eugênio Ribeiro de Andrade Neto; MARIA AUXILIADORA COELHO DE LIMA, CPATSA. |
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Título: |
Quality and antioxidant activity of Isabel Precoce grapes installed on different training systems and rootstocks in warmer seasons in a tropical semi-arid region. |
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Ano de publicação: |
2020 |
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Fonte/Imprenta: |
Australian Journal of Crop Science, v. 14, n. 12, p. 1991-1998, 2020. |
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DOI: |
10.21475/ajcs.20.14.12.2871 |
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Idioma: |
Inglês |
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Conteúdo: |
Production system and environmental factors might cause changes in grapevine physiology, affecting grape yield, quality, phenolic composition, and antioxidant potential. The aim of this study was to characterize the quality and antioxidant potential of 'Isabel Precoce' grapes on different training systems and rootstocks in warmer seasons, in tropical conditions. Experimental design was in randomized blocks, in sub-subplots through time and four replicates. Three training systems (overhead trellis, lyre and vertical shoot positioning - VSP) and two rootstocks (‘IAC 572’ and ‘IAC 766’) were studied in the production cycles from July to October, 2017 and from July to October, 2018 in the Submedium of São Francisco Valley. Berry weight; cluster weight; color attributes; berry resistance to compression (COMP); titratable acidity; soluble solids; total soluble sugars (TSS); yellow flavonoids; total anthocyanins; total extractable polyphenols and antioxidant activity by ABTS●+ and DPPH● free radical capture methods were analyzed. Lyre and VSP resulted on increases of 6% and 17% in berry weight and COMP, respectively. Moreover, differences between production cycles were more intense for both variables. In production cycle from July to October 2017, lyre and VSP systems provided increases of 2 g 100 g-1 of TSS and higher anthocyanin and yellow flavonoid contents, while grapes trained in VSP had higher antioxidant activity. Mean values of anthocyanins reached 529.34 mg 100 g-1 in grapes harvested in October 2017. Some grape quality and chemical components showed high variation in warmer seasons of sucessive years, according to training system or rootstock and their combinations. MenosProduction system and environmental factors might cause changes in grapevine physiology, affecting grape yield, quality, phenolic composition, and antioxidant potential. The aim of this study was to characterize the quality and antioxidant potential of 'Isabel Precoce' grapes on different training systems and rootstocks in warmer seasons, in tropical conditions. Experimental design was in randomized blocks, in sub-subplots through time and four replicates. Three training systems (overhead trellis, lyre and vertical shoot positioning - VSP) and two rootstocks (‘IAC 572’ and ‘IAC 766’) were studied in the production cycles from July to October, 2017 and from July to October, 2018 in the Submedium of São Francisco Valley. Berry weight; cluster weight; color attributes; berry resistance to compression (COMP); titratable acidity; soluble solids; total soluble sugars (TSS); yellow flavonoids; total anthocyanins; total extractable polyphenols and antioxidant activity by ABTS●+ and DPPH● free radical capture methods were analyzed. Lyre and VSP resulted on increases of 6% and 17% in berry weight and COMP, respectively. Moreover, differences between production cycles were more intense for both variables. In production cycle from July to October 2017, lyre and VSP systems provided increases of 2 g 100 g-1 of TSS and higher anthocyanin and yellow flavonoid contents, while grapes trained in VSP had higher antioxidant activity. Mean values of anthocyanins reached 529.34 mg 100... Mostrar Tudo |
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Palavras-Chave: |
Fisiologia da videira; Manejo da vinha; Rendimento da uva; Vitivinicultura tropical. |
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Thesagro: |
Composto Fenólico; Fisiologia; Qualidade; Rendimento; Uva; Vitis Labrusca. |
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Thesaurus NAL: |
Grapes; Phenolic compounds. |
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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/221270/1/Quality-and-antioxidant-activity-of-Isabel-Precoce-grapes-2020.pdf
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Marc: |
LEADER 02760naa a2200325 a 4500
001 2130096
005 2021-02-18
008 2020 bl uuuu u00u1 u #d
024 7 $a10.21475/ajcs.20.14.12.2871$2DOI
100 1 $aCOSTA, R. R. da
245 $aQuality and antioxidant activity of Isabel Precoce grapes installed on different training systems and rootstocks in warmer seasons in a tropical semi-arid region.$h[electronic resource]
260 $c2020
520 $aProduction system and environmental factors might cause changes in grapevine physiology, affecting grape yield, quality, phenolic composition, and antioxidant potential. The aim of this study was to characterize the quality and antioxidant potential of 'Isabel Precoce' grapes on different training systems and rootstocks in warmer seasons, in tropical conditions. Experimental design was in randomized blocks, in sub-subplots through time and four replicates. Three training systems (overhead trellis, lyre and vertical shoot positioning - VSP) and two rootstocks (‘IAC 572’ and ‘IAC 766’) were studied in the production cycles from July to October, 2017 and from July to October, 2018 in the Submedium of São Francisco Valley. Berry weight; cluster weight; color attributes; berry resistance to compression (COMP); titratable acidity; soluble solids; total soluble sugars (TSS); yellow flavonoids; total anthocyanins; total extractable polyphenols and antioxidant activity by ABTS●+ and DPPH● free radical capture methods were analyzed. Lyre and VSP resulted on increases of 6% and 17% in berry weight and COMP, respectively. Moreover, differences between production cycles were more intense for both variables. In production cycle from July to October 2017, lyre and VSP systems provided increases of 2 g 100 g-1 of TSS and higher anthocyanin and yellow flavonoid contents, while grapes trained in VSP had higher antioxidant activity. Mean values of anthocyanins reached 529.34 mg 100 g-1 in grapes harvested in October 2017. Some grape quality and chemical components showed high variation in warmer seasons of sucessive years, according to training system or rootstock and their combinations.
650 $aGrapes
650 $aPhenolic compounds
650 $aComposto Fenólico
650 $aFisiologia
650 $aQualidade
650 $aRendimento
650 $aUva
650 $aVitis Labrusca
653 $aFisiologia da videira
653 $aManejo da vinha
653 $aRendimento da uva
653 $aVitivinicultura tropical
700 1 $aFERREIRA, T. de O.
700 1 $aRODRIGUES, A. A. M.
700 1 $aANDRADE NETO, E. R. de
700 1 $aLIMA, M. A. C. de
773 $tAustralian Journal of Crop Science$gv. 14, n. 12, p. 1991-1998, 2020.
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Embrapa Semiárido (CPATSA) |
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