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Registro Completo |
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Biblioteca(s): |
Embrapa Amazônia Ocidental. |
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Data corrente: |
29/12/2020 |
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Data da última atualização: |
23/03/2021 |
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Tipo da produção científica: |
Artigo em Anais de Congresso |
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Autoria: |
SANTOS, E. M. dos; SILVA, L. de J. de S. |
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Afiliação: |
Endrio Morais dos Santos, Bolsista de Iniciação Científica, Paic/Fapeam/CPAA; LINDOMAR DE JESUS DE SOUSA SILVA, CPAA. |
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Título: |
Expansão da guaranaicultura - criação do circuito metropolitano: levantamento do perfil socioeconômico de produtores em comunidades dos municípios-alvo da transferência de tecnologia. |
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Ano de publicação: |
2020 |
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Fonte/Imprenta: |
In: JORNADA DE INICIAÇÃO CIENTÍFICA DA EMBRAPA AMAZÔNIA OCIDENTAL, 16., 2019, Manaus. Anais... Brasília, DF: Embrapa, 2020. |
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Páginas: |
p. 99-106. |
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Idioma: |
Português |
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Conteúdo: |
Este texto relata alguns aspectos relacionados à transferência de tecnologia na comunidade, evidenciando os desafios presentes, como também as estratégias de superação construídas a partir de arranjo institucional, e fortalecendo o papel da própria comunidade no processo de gestão e desenvolvimento do projeto. |
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Thesagro: |
Guaraná. |
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Categoria do assunto: |
-- |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/222061/1/XVI-Jornada-IC-p99.pdf
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Marc: |
LEADER 00956nam a2200145 a 4500
001 2128826
005 2021-03-23
008 2020 bl uuuu u00u1 u #d
100 1 $aSANTOS, E. M. dos
245 $aExpansão da guaranaicultura - criação do circuito metropolitano$blevantamento do perfil socioeconômico de produtores em comunidades dos municípios-alvo da transferência de tecnologia.$h[electronic resource]
260 $aIn: JORNADA DE INICIAÇÃO CIENTÍFICA DA EMBRAPA AMAZÔNIA OCIDENTAL, 16., 2019, Manaus. Anais... Brasília, DF: Embrapa$c2020
300 $ap. 99-106.
520 $aEste texto relata alguns aspectos relacionados à transferência de tecnologia na comunidade, evidenciando os desafios presentes, como também as estratégias de superação construídas a partir de arranjo institucional, e fortalecendo o papel da própria comunidade no processo de gestão e desenvolvimento do projeto.
650 $aGuaraná
700 1 $aSILVA, L. de J. de S.
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Registro original: |
Embrapa Amazônia Ocidental (CPAA) |
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 | Acesso ao texto completo restrito à biblioteca da Embrapa Agrobiologia. Para informações adicionais entre em contato com cnpab.biblioteca@embrapa.br. |
Registro Completo
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Biblioteca(s): |
Embrapa Agrobiologia. |
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Data corrente: |
02/08/2004 |
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Data da última atualização: |
02/08/2004 |
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Autoria: |
ARAÚJO, A. P.; TEIXEIRA, M. G. |
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Título: |
Ontogenetic variations on absorption and utilization of phosphorus in common bean cultivars under biological nitrogen fixation. |
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Ano de publicação: |
2000 |
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Fonte/Imprenta: |
Plant and Soil, Dordrecht, v. 225, p. 1-10, 2000. |
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Idioma: |
Inglês |
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Conteúdo: |
An experiment was conducted to evaluate the effect of plant ontogeny on traits associated with absorption and utilization of P by common bean (Phaseolus vulgaris L.) cultivars under biological N2 fixation through plant growth analysis. Eigth cultivars were grown in pots at two levels of applied P (20 and 80 mg P kg-¹ soil) and harvested at three growth stages (third trifoliate expanded, plentiful flowering, pod setting). The development of nodulation differed among cultivars and depended on P supply; some cultivars showed an intense decline in nodule number after flowering. There were different patterns of root growth: some cultivars increased root area after flowering mainly by increasing root mass, whereas others by decreasing root radius. Despite the overall drift of reducing P influx into roots over time, some cultivars maintained P influx almost stable after flowering. Cultivars with greater root area had lower influx, whereas cultivars with smaller root area had higher influx, denoting a compensatory mechanism between root growth and P influx, such mechanism presenting ontogenetic variations associated to patterns of root area production. The cultivars differed in specific P utilization rate at low but not at high soil P level; hence P utilization seems an important physiological component for screening bean genotypes under limited P supply. High correlation between net assimilation rate and specific P utilization rate suggests that P utilization is strongly related to photosynthetic activity. Despite, the wide variation among cultivars on root growth, nodulation and rates of P absorption and utilization, the genotypic variability for total dry mass and P content was narrow by pod setting. Owing to growth constraints caused by a possible inefficient symbiosis, the concomitant selection of bean genotypes for tolerance to low P and high N2 fixation activity should prioritize traits related to the root system and to N2 fixation over total dry matter. The ontogenetic variations of traits associated with P adsorption and utilization in common bean cultivars require evaluations at different plant growth stages. MenosAn experiment was conducted to evaluate the effect of plant ontogeny on traits associated with absorption and utilization of P by common bean (Phaseolus vulgaris L.) cultivars under biological N2 fixation through plant growth analysis. Eigth cultivars were grown in pots at two levels of applied P (20 and 80 mg P kg-¹ soil) and harvested at three growth stages (third trifoliate expanded, plentiful flowering, pod setting). The development of nodulation differed among cultivars and depended on P supply; some cultivars showed an intense decline in nodule number after flowering. There were different patterns of root growth: some cultivars increased root area after flowering mainly by increasing root mass, whereas others by decreasing root radius. Despite the overall drift of reducing P influx into roots over time, some cultivars maintained P influx almost stable after flowering. Cultivars with greater root area had lower influx, whereas cultivars with smaller root area had higher influx, denoting a compensatory mechanism between root growth and P influx, such mechanism presenting ontogenetic variations associated to patterns of root area production. The cultivars differed in specific P utilization rate at low but not at high soil P level; hence P utilization seems an important physiological component for screening bean genotypes under limited P supply. High correlation between net assimilation rate and specific P utilization rate suggests that P utilization is strongly related to... Mostrar Tudo |
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Palavras-Chave: |
Biological nitrogen fixation; BNF; Common bean; FBN; Fixação biológica de nitrogênio; Genotypes; P; Root nodulation. |
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Thesagro: |
Feijão; Fósforo; Genética; Genótipo; Nodulação; Phaseolus Vulgaris. |
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Thesaurus NAL: |
genetics; phosphorus. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 03040naa a2200325 a 4500
001 1626249
005 2004-08-02
008 2000 bl --- 0-- u #d
100 1 $aARAÚJO, A. P.
245 $aOntogenetic variations on absorption and utilization of phosphorus in common bean cultivars under biological nitrogen fixation.
260 $c2000
520 $aAn experiment was conducted to evaluate the effect of plant ontogeny on traits associated with absorption and utilization of P by common bean (Phaseolus vulgaris L.) cultivars under biological N2 fixation through plant growth analysis. Eigth cultivars were grown in pots at two levels of applied P (20 and 80 mg P kg-¹ soil) and harvested at three growth stages (third trifoliate expanded, plentiful flowering, pod setting). The development of nodulation differed among cultivars and depended on P supply; some cultivars showed an intense decline in nodule number after flowering. There were different patterns of root growth: some cultivars increased root area after flowering mainly by increasing root mass, whereas others by decreasing root radius. Despite the overall drift of reducing P influx into roots over time, some cultivars maintained P influx almost stable after flowering. Cultivars with greater root area had lower influx, whereas cultivars with smaller root area had higher influx, denoting a compensatory mechanism between root growth and P influx, such mechanism presenting ontogenetic variations associated to patterns of root area production. The cultivars differed in specific P utilization rate at low but not at high soil P level; hence P utilization seems an important physiological component for screening bean genotypes under limited P supply. High correlation between net assimilation rate and specific P utilization rate suggests that P utilization is strongly related to photosynthetic activity. Despite, the wide variation among cultivars on root growth, nodulation and rates of P absorption and utilization, the genotypic variability for total dry mass and P content was narrow by pod setting. Owing to growth constraints caused by a possible inefficient symbiosis, the concomitant selection of bean genotypes for tolerance to low P and high N2 fixation activity should prioritize traits related to the root system and to N2 fixation over total dry matter. The ontogenetic variations of traits associated with P adsorption and utilization in common bean cultivars require evaluations at different plant growth stages.
650 $agenetics
650 $aphosphorus
650 $aFeijão
650 $aFósforo
650 $aGenética
650 $aGenótipo
650 $aNodulação
650 $aPhaseolus Vulgaris
653 $aBiological nitrogen fixation
653 $aBNF
653 $aCommon bean
653 $aFBN
653 $aFixação biológica de nitrogênio
653 $aGenotypes
653 $aP
653 $aRoot nodulation
700 1 $aTEIXEIRA, M. G.
773 $tPlant and Soil, Dordrecht$gv. 225, p. 1-10, 2000.
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