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Registro Completo |
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Biblioteca(s): |
Embrapa Agrossilvipastoril. |
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Data corrente: |
28/01/2022 |
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Data da última atualização: |
28/01/2022 |
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Tipo da produção científica: |
Artigo em Anais de Congresso |
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Autoria: |
SILVA, A. B. da; MONTEIRO, R. A. C.; CARVALHO, C. A. B. de; BARROS, I. de; MORENZ, D. A.; MOUSTACAS, V. S.; XAVIER, D. B.; RODRIGUES, K. da S. |
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Afiliação: |
ALINE BARROS DA SILVA, Doutoranda, Universidade Federal do Rio de Janeiro; ROBERTA APARECIDA C MONTEIRO, CNPGL; CARLOS AUGUSTO BRANDÃO DE CARVALHO, Universidade Federal do Rio Janeiro; INACIO DE BARROS, CNPGL; DANILO ANTONIO MORENZ, Universidade Federal do Mato Grosso; VALERIA SPYRIDION MOUSTACAS, CPAMT; DIEGO BATISTA XAVIER, CPAMT; KARINA DA SILVA RODRIGUES, Universidade Federal do Mato Grosso. |
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Título: |
Pasture shadowing reduces searches for water troughs by dairy cows. |
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Ano de publicação: |
2021 |
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Fonte/Imprenta: |
In: WORLD CONGRESS ON INTEGRATED CROP-LIVESTOCK-FORESTRY SYSTEMS, 2., 2021. Proceedings reference. Brasília, DF: Embrapa, 2021. |
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Páginas: |
p. 181-185. |
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Idioma: |
Inglês |
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Conteúdo: |
Shading pastures alters the animals' routine and may have an influence on their relationship with water. The objective was to assess the behavior of crossbred cows related to shade and the search for water in three systems: Full sun; Moderate shading and Intense shading. The experiment was conducted at Embrapa Agrossilvipastoril (Sinop/MT/Brazil) from summer 2017 to summer 2018. Behavior of dairy cows? observations were carried out in three typical days in each season, from 6 am to 6 pm. Univariate analyzes were performed by SAS® On Demand and multivariate (principal component analysis) by Excel. The full sun system stimulated a higher frequency of animals looking for the water trough and a longer stay around it, as well as a shorter stay in the shade combined with a lower frequency of animals in this location, being more associated with incident radiation than temperature and temperature and humidity index. When there was shade available in the shaded treatments, the observed relationships were just the opposite. Therefore, shading, even if moderate, contributes to lessen the discomfort of dairy cows caused by radiation; this radiation, which encourages animals to frequent and remain around water troughs. |
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Palavras-Chave: |
Pasto; Radiation; Shade time; Silvopastoral; Silvopastoril; Sombra. |
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Thesagro: |
Bovino; Gado Leiteiro; Radiação; Vaca Leiteira. |
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Categoria do assunto: |
L Ciência Animal e Produtos de Origem Animal |
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Marc: |
LEADER 02176nam a2200325 a 4500
001 2139458
005 2022-01-28
008 2021 bl uuuu u01u1 u #d
100 1 $aSILVA, A. B. da
245 $aPasture shadowing reduces searches for water troughs by dairy cows.$h[electronic resource]
260 $aIn: WORLD CONGRESS ON INTEGRATED CROP-LIVESTOCK-FORESTRY SYSTEMS, 2., 2021. Proceedings reference. Brasília, DF: Embrapa$c2021
300 $ap. 181-185.
520 $aShading pastures alters the animals' routine and may have an influence on their relationship with water. The objective was to assess the behavior of crossbred cows related to shade and the search for water in three systems: Full sun; Moderate shading and Intense shading. The experiment was conducted at Embrapa Agrossilvipastoril (Sinop/MT/Brazil) from summer 2017 to summer 2018. Behavior of dairy cows? observations were carried out in three typical days in each season, from 6 am to 6 pm. Univariate analyzes were performed by SAS® On Demand and multivariate (principal component analysis) by Excel. The full sun system stimulated a higher frequency of animals looking for the water trough and a longer stay around it, as well as a shorter stay in the shade combined with a lower frequency of animals in this location, being more associated with incident radiation than temperature and temperature and humidity index. When there was shade available in the shaded treatments, the observed relationships were just the opposite. Therefore, shading, even if moderate, contributes to lessen the discomfort of dairy cows caused by radiation; this radiation, which encourages animals to frequent and remain around water troughs.
650 $aBovino
650 $aGado Leiteiro
650 $aRadiação
650 $aVaca Leiteira
653 $aPasto
653 $aRadiation
653 $aShade time
653 $aSilvopastoral
653 $aSilvopastoril
653 $aSombra
700 1 $aMONTEIRO, R. A. C.
700 1 $aCARVALHO, C. A. B. de
700 1 $aBARROS, I. de
700 1 $aMORENZ, D. A.
700 1 $aMOUSTACAS, V. S.
700 1 $aXAVIER, D. B.
700 1 $aRODRIGUES, K. da S.
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Registro original: |
Embrapa Agrossilvipastoril (CPAMT) |
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 | Acesso ao texto completo restrito à biblioteca da Embrapa Arroz e Feijão. Para informações adicionais entre em contato com cnpaf.biblioteca@embrapa.br. |
Registro Completo
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Biblioteca(s): |
Embrapa Arroz e Feijão. |
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Data corrente: |
18/02/2016 |
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Data da última atualização: |
18/02/2016 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Circulação/Nível: |
A - 1 |
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Autoria: |
DOMICIANO, G. P.; CACIQUE, I. S.; FREITAS, C. C.; FILIPPI, M. C. C.; DAMATTA, F. M.; VALE, F. X. R. do; RODRIGUES, F. A. |
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Afiliação: |
GISELE PEREIRA DOMICIANO, UFV; ISAIAS SEVERINO CACIQUE, UFV; CECILIA CHAGAS FREITAS, UFV; MARTA CRISTINA CORSI DE FILIPPI, CNPAF; FABIO MURILO DAMATTA, UFV; FRANCISCO XAVIER RIBEIRO DO VALE, UFV; FABRÍCIO ÁVILA RODRIGUES, UFV. |
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Título: |
Alterations in gas exchange and oxidative metabolism in rice leaves infected by Pyricularia oryzae are attenuated by silicon. |
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Ano de publicação: |
2015 |
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Fonte/Imprenta: |
Phytopathology, v. 105, n. 6, p. 738-747, June 2015. |
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DOI: |
10.1094/PHYTO-10-14-0280-R |
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Idioma: |
Inglês |
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Conteúdo: |
Rice blast, caused by Pyricularia oryzae, is the most important disease in rice worldwide. This study investigated the effects of silicon (Si) on the photosynthetic gas exchange parameters (net CO2 assimilation rate [A], stomatal conductance to water vapor [gs], internal-to-ambient CO2 concentration ratio [Ci/Ca], and transpiration rate [E]); chlorophyll fluorescence a (Chla) parameters (maximum photochemical efficiency of photosystem II [Fv/Fm], photochemical [qP] and nonphotochemical [NPQ] quenching coefficients, and electron transport rate [ETR]); concentrations of pigments, malondialdehyde (MDA), and hydrogen peroxide (H2O2); and activities of superoxide dismutase (SOD), catalase (CAT), ascorbate peroxidase (APX), glutathione reductase (GR), and lypoxigenase (LOX) in rice leaves. Rice plants were grown in a nutrient solution containing 0 or 2 mM Si (-Si or +Si, respectively) with and without P. oryzae inoculation. Blast severity decreased with higher foliar Si concentration. The values of A, gs and E were generally higher for the +Si plants in comparison with the -Si plants upon P. oryzae infection. The Fv/Fm, qp, NPQ, and ETR were greater for the +Si plants relative to the -Si plants at 108 and 132 h after inoculation (hai). The values for qp and ETR were significantly higher for the -Si plants in comparison with the +Si plants at 36 hai, and the NPQ was significantly higher for the -Si plants in comparison with the +Si plants at 0 and 36 hai. The concentrations of Chla, Chlb, Chla+b, and carotenoids were significantly greater in the +Si plants relative to the -Si plants. For the -Si plants, the MDA and H2O2 concentrations were significantly higher than those in the +Si plants. The LOX activity was significantly higher in the +Si plants than in the -Si plants. The SOD and GR activities were significantly higher for the -Si plants than in the +Si plants. The CAT and APX activities were significantly higher in the +Si plants than in the -Si plants. The supply of Si contributed to a decrease in blast severity, improved the gas exchange performance, and caused less dysfunction at the photochemical level. MenosRice blast, caused by Pyricularia oryzae, is the most important disease in rice worldwide. This study investigated the effects of silicon (Si) on the photosynthetic gas exchange parameters (net CO2 assimilation rate [A], stomatal conductance to water vapor [gs], internal-to-ambient CO2 concentration ratio [Ci/Ca], and transpiration rate [E]); chlorophyll fluorescence a (Chla) parameters (maximum photochemical efficiency of photosystem II [Fv/Fm], photochemical [qP] and nonphotochemical [NPQ] quenching coefficients, and electron transport rate [ETR]); concentrations of pigments, malondialdehyde (MDA), and hydrogen peroxide (H2O2); and activities of superoxide dismutase (SOD), catalase (CAT), ascorbate peroxidase (APX), glutathione reductase (GR), and lypoxigenase (LOX) in rice leaves. Rice plants were grown in a nutrient solution containing 0 or 2 mM Si (-Si or +Si, respectively) with and without P. oryzae inoculation. Blast severity decreased with higher foliar Si concentration. The values of A, gs and E were generally higher for the +Si plants in comparison with the -Si plants upon P. oryzae infection. The Fv/Fm, qp, NPQ, and ETR were greater for the +Si plants relative to the -Si plants at 108 and 132 h after inoculation (hai). The values for qp and ETR were significantly higher for the -Si plants in comparison with the +Si plants at 36 hai, and the NPQ was significantly higher for the -Si plants in comparison with the +Si plants at 0 and 36 hai. The concentrations of Chla... Mostrar Tudo |
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Palavras-Chave: |
Fungal infection. |
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Thesagro: |
Arroz; Brusone; Doença de planta; Fotossíntese; Oryza sativa; Pyricularia oryzae. |
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Categoria do assunto: |
H Saúde e Patologia |
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Marc: |
LEADER 03018naa a2200289 a 4500
001 2037587
005 2016-02-18
008 2015 bl uuuu u00u1 u #d
024 7 $a10.1094/PHYTO-10-14-0280-R$2DOI
100 1 $aDOMICIANO, G. P.
245 $aAlterations in gas exchange and oxidative metabolism in rice leaves infected by Pyricularia oryzae are attenuated by silicon.$h[electronic resource]
260 $c2015
520 $aRice blast, caused by Pyricularia oryzae, is the most important disease in rice worldwide. This study investigated the effects of silicon (Si) on the photosynthetic gas exchange parameters (net CO2 assimilation rate [A], stomatal conductance to water vapor [gs], internal-to-ambient CO2 concentration ratio [Ci/Ca], and transpiration rate [E]); chlorophyll fluorescence a (Chla) parameters (maximum photochemical efficiency of photosystem II [Fv/Fm], photochemical [qP] and nonphotochemical [NPQ] quenching coefficients, and electron transport rate [ETR]); concentrations of pigments, malondialdehyde (MDA), and hydrogen peroxide (H2O2); and activities of superoxide dismutase (SOD), catalase (CAT), ascorbate peroxidase (APX), glutathione reductase (GR), and lypoxigenase (LOX) in rice leaves. Rice plants were grown in a nutrient solution containing 0 or 2 mM Si (-Si or +Si, respectively) with and without P. oryzae inoculation. Blast severity decreased with higher foliar Si concentration. The values of A, gs and E were generally higher for the +Si plants in comparison with the -Si plants upon P. oryzae infection. The Fv/Fm, qp, NPQ, and ETR were greater for the +Si plants relative to the -Si plants at 108 and 132 h after inoculation (hai). The values for qp and ETR were significantly higher for the -Si plants in comparison with the +Si plants at 36 hai, and the NPQ was significantly higher for the -Si plants in comparison with the +Si plants at 0 and 36 hai. The concentrations of Chla, Chlb, Chla+b, and carotenoids were significantly greater in the +Si plants relative to the -Si plants. For the -Si plants, the MDA and H2O2 concentrations were significantly higher than those in the +Si plants. The LOX activity was significantly higher in the +Si plants than in the -Si plants. The SOD and GR activities were significantly higher for the -Si plants than in the +Si plants. The CAT and APX activities were significantly higher in the +Si plants than in the -Si plants. The supply of Si contributed to a decrease in blast severity, improved the gas exchange performance, and caused less dysfunction at the photochemical level.
650 $aArroz
650 $aBrusone
650 $aDoença de planta
650 $aFotossíntese
650 $aOryza sativa
650 $aPyricularia oryzae
653 $aFungal infection
700 1 $aCACIQUE, I. S.
700 1 $aFREITAS, C. C.
700 1 $aFILIPPI, M. C. C.
700 1 $aDAMATTA, F. M.
700 1 $aVALE, F. X. R. do
700 1 $aRODRIGUES, F. A.
773 $tPhytopathology$gv. 105, n. 6, p. 738-747, June 2015.
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Embrapa Arroz e Feijão (CNPAF) |
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