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Registro Completo |
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Biblioteca(s): |
Embrapa Milho e Sorgo. |
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Data corrente: |
25/01/2022 |
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Data da última atualização: |
13/07/2022 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
ÁVILA, R. G.; MAGALHAES, P. C.; SILVA, E. M. da; ALVARENGA, A. A. de; REIS, C. O. dos; CUSTÓDIO. A. M.; JAKELAITIS, A.; SOUZA, T. C. de. |
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Afiliação: |
RONIEL GERALDO ÁVILA, Universidade Federal de Lavras; PAULO CESAR MAGALHAES, CNPMS; EDER MARCOS DA SILVA, Universidade Federal de Lavras; AMAURI ALVES DE ALVARENGA, Universidade Federal de Lavras; CAROLINE OLIVEIRA DOS REIS, Universidade Federal de Lavras; ALDO MAX CUSTÓDIO, Instituto Federal Goiano; ADRIANO JAKELAITIS, Instituto Federal Goiano; THIAGO CORRÊA DE SOUZA, Universidade Federal de Alfenas. |
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Título: |
Foliar application of potassium nitrate induces tolerance to water deficit in pre-flowering sorghum plants. |
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Ano de publicação: |
2022 |
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Fonte/Imprenta: |
Acta Scientiarum. Agronomy, v. 44, n. 1, e53069, 2022. |
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Idioma: |
Inglês |
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Conteúdo: |
The objective of this study was to evaluate the the ability of foliar application of potassium nitrate (KNO3) to induce water deficit tolerance in sorghum plants (Sorghum bicolor cv. P898012) subjected to water deficit at pre-flowering. The experiment was conducted under greenhouse conditions with 4 treatments: field capacity (FC), water deficit (WD), field capacity + KNO3 (FC + KNO3), and water deficit + KNO3 (WD + KNO3). Two foliar applications of 3% (m/v) KNO3 were made, the first on day zero of stress and the second on the fifth day. All analyses were performed after 12 days of stress (end of stress). Foliar application of KNO3 to irrigated plants led to increases in relative chlorophyll content, photosynthetic rate, stomatal conductance, transpiration, and carboxylation efficiency. It also induced increases in leaf concentrations of P, Mg, S, Cu, and Fe, in addition to height growth. Under water deficit conditions, plants treated with KNO3 presented higher relative chlorophyll content, leaf area, photosynthetic rate, stomatal conductance, transpiration, carboxylation efficiency, and higher levels of P, K, Mg, S, Cu, and Fe than those not treated with KNO3. The morphometry of the root system was not altered by the treatments. In addition, plants treated with KNO3 under water deficit conditions showed higher growth and a grain yield 32.2% higher than those that did not receive KNO3. These results demonstrated that KNO3 applied to the leaves induced water deficit tolerance in sorghum plants subjected to severe water stress at pre-flowering. MenosThe objective of this study was to evaluate the the ability of foliar application of potassium nitrate (KNO3) to induce water deficit tolerance in sorghum plants (Sorghum bicolor cv. P898012) subjected to water deficit at pre-flowering. The experiment was conducted under greenhouse conditions with 4 treatments: field capacity (FC), water deficit (WD), field capacity + KNO3 (FC + KNO3), and water deficit + KNO3 (WD + KNO3). Two foliar applications of 3% (m/v) KNO3 were made, the first on day zero of stress and the second on the fifth day. All analyses were performed after 12 days of stress (end of stress). Foliar application of KNO3 to irrigated plants led to increases in relative chlorophyll content, photosynthetic rate, stomatal conductance, transpiration, and carboxylation efficiency. It also induced increases in leaf concentrations of P, Mg, S, Cu, and Fe, in addition to height growth. Under water deficit conditions, plants treated with KNO3 presented higher relative chlorophyll content, leaf area, photosynthetic rate, stomatal conductance, transpiration, carboxylation efficiency, and higher levels of P, K, Mg, S, Cu, and Fe than those not treated with KNO3. The morphometry of the root system was not altered by the treatments. In addition, plants treated with KNO3 under water deficit conditions showed higher growth and a grain yield 32.2% higher than those that did not receive KNO3. These results demonstrated that KNO3 applied to the leaves induced water deficit tolerance... Mostrar Tudo |
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Palavras-Chave: |
Chlorophyll fluorescence; Drought resistance; Fluorescência da clorofila; Leaf gas exchange; Mineral nutrition; Nutrição mineral; Troca gasosa foliar; WinRhizo. |
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Thesagro: |
Resistência a Seca; Sorghum Bicolor; Sorgo. |
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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/230480/1/Foliar-application.pdf
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Marc: |
LEADER 02579naa a2200337 a 4500
001 2139292
005 2022-07-13
008 2022 bl uuuu u00u1 u #d
100 1 $aÁVILA, R. G.
245 $aFoliar application of potassium nitrate induces tolerance to water deficit in pre-flowering sorghum plants.$h[electronic resource]
260 $c2022
520 $aThe objective of this study was to evaluate the the ability of foliar application of potassium nitrate (KNO3) to induce water deficit tolerance in sorghum plants (Sorghum bicolor cv. P898012) subjected to water deficit at pre-flowering. The experiment was conducted under greenhouse conditions with 4 treatments: field capacity (FC), water deficit (WD), field capacity + KNO3 (FC + KNO3), and water deficit + KNO3 (WD + KNO3). Two foliar applications of 3% (m/v) KNO3 were made, the first on day zero of stress and the second on the fifth day. All analyses were performed after 12 days of stress (end of stress). Foliar application of KNO3 to irrigated plants led to increases in relative chlorophyll content, photosynthetic rate, stomatal conductance, transpiration, and carboxylation efficiency. It also induced increases in leaf concentrations of P, Mg, S, Cu, and Fe, in addition to height growth. Under water deficit conditions, plants treated with KNO3 presented higher relative chlorophyll content, leaf area, photosynthetic rate, stomatal conductance, transpiration, carboxylation efficiency, and higher levels of P, K, Mg, S, Cu, and Fe than those not treated with KNO3. The morphometry of the root system was not altered by the treatments. In addition, plants treated with KNO3 under water deficit conditions showed higher growth and a grain yield 32.2% higher than those that did not receive KNO3. These results demonstrated that KNO3 applied to the leaves induced water deficit tolerance in sorghum plants subjected to severe water stress at pre-flowering.
650 $aResistência a Seca
650 $aSorghum Bicolor
650 $aSorgo
653 $aChlorophyll fluorescence
653 $aDrought resistance
653 $aFluorescência da clorofila
653 $aLeaf gas exchange
653 $aMineral nutrition
653 $aNutrição mineral
653 $aTroca gasosa foliar
653 $aWinRhizo
700 1 $aMAGALHAES, P. C.
700 1 $aSILVA, E. M. da
700 1 $aALVARENGA, A. A. de
700 1 $aREIS, C. O. dos
700 1 $aCUSTÓDIO. A. M.
700 1 $aJAKELAITIS, A.
700 1 $aSOUZA, T. C. de
773 $tActa Scientiarum. Agronomy$gv. 44, n. 1, e53069, 2022.
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Registro original: |
Embrapa Milho e Sorgo (CNPMS) |
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Registro Completo
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Biblioteca(s): |
Embrapa Cerrados. |
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Data corrente: |
11/04/2024 |
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Data da última atualização: |
11/04/2024 |
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Autoria: |
VILELA, M. de F.; SOARES, V. P.; FERNANDES FILHO, E. I.; ANTÔNIO, C.; RIBEIRO, A. S.; PEREIRA, R. de A. |
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Afiliação: |
MARINA DE FATIMA VILELA, CPAC; VICENTE PAULO SOARES, UNIVERSIDADE FEDERAL DE VIÇOSA; ELPÍDIO INÁCIO FERNANDES FILHO, UNIVERSIDADE FEDERAL DE VIÇOSA; CARLOS ANTÔNIO, UNIVERSIDADE FEDERAL DE VIÇOSA; ALVARES SOARES RIBEIRO, UNIVERSIDADE FEDERAL DE VIÇOSA; RICARDO DE ARAUJO PEREIRA, INSTITUTO NACIONAL DE COLONIZAÇÃO E REFORMA AGRÁRIA. |
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Título: |
Imagens orbitais como base de dados em projetos de reforma agrária |
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Ano de publicação: |
2004 |
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Fonte/Imprenta: |
SIMPÓSIO REGIONAL DE GEOPROCESSAMENTO E SENSORIAMENTO REMOTO, 2., 2004, Aracaju. Anais... Aracaju: Embrapa Tabuleiros Costeiros, 2004. |
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Páginas: |
4 p. |
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Idioma: |
Português |
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Conteúdo: |
Resumo: Analisou-se o potencial das imagens TM/Landsat-5, ETM+/Landsat-7, CBERS/CCD e IKONOS como base de dados para reforma agrária. Os resultados mostraram que a imagem IKONOS apresentou o melhor desempenho técnico, entretanto, o custo de aquisição impede sua ampla utilização como base de dados. A imagem ETM+/Landsat-7 apresentou bom desempenho técnico, mas, a perda de contato com a plataforma impede a aquisição de dados atualizados. A imagem CBERS/CCD apresenta-se como potencial base de dados, quando se considera o custo, a possibilidade de solução dos problemas radiométricos, a perda do contato com o Landsat-7 e o lançamento do CBERS-2. Abstract. Technical and economical analyses were performed on IKONOS, TM/Landsat-5, ETM+/Landsat-7 and CBERS/CCD data in order to verify their feasibilities to subsidy agrarian reform projects. Results showed that IKONOS data presented excellent technical viability but its high cost prevents its use. ETM+/Landsat-7data, with low cost, presented a good technical viability, however, problems that occurred in the satellite operation, also prevented its use. The CBERS/CCD data can become a good source of data when considerate its cost, the possible radiometry correction, the lost of contact with the Landsat-7 and the launch of CBERS 2. |
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Thesagro: |
Base de Dados; Reforma Agrária; Satélite. |
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Thesaurus NAL: |
Land reform; Landsat. |
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Categoria do assunto: |
-- |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/doc/1163519/1/imagens-orbitais.pdf
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Marc: |
LEADER 02056nam a2200241 a 4500
001 2163519
005 2024-04-11
008 2004 bl uuuu u00u1 u #d
100 1 $aVILELA, M. de F.
245 $aImagens orbitais como base de dados em projetos de reforma agrária$h[electronic resource]
260 $aSIMPÓSIO REGIONAL DE GEOPROCESSAMENTO E SENSORIAMENTO REMOTO, 2., 2004, Aracaju. Anais... Aracaju: Embrapa Tabuleiros Costeiros$c2004
300 $a4 p.
520 $aResumo: Analisou-se o potencial das imagens TM/Landsat-5, ETM+/Landsat-7, CBERS/CCD e IKONOS como base de dados para reforma agrária. Os resultados mostraram que a imagem IKONOS apresentou o melhor desempenho técnico, entretanto, o custo de aquisição impede sua ampla utilização como base de dados. A imagem ETM+/Landsat-7 apresentou bom desempenho técnico, mas, a perda de contato com a plataforma impede a aquisição de dados atualizados. A imagem CBERS/CCD apresenta-se como potencial base de dados, quando se considera o custo, a possibilidade de solução dos problemas radiométricos, a perda do contato com o Landsat-7 e o lançamento do CBERS-2. Abstract. Technical and economical analyses were performed on IKONOS, TM/Landsat-5, ETM+/Landsat-7 and CBERS/CCD data in order to verify their feasibilities to subsidy agrarian reform projects. Results showed that IKONOS data presented excellent technical viability but its high cost prevents its use. ETM+/Landsat-7data, with low cost, presented a good technical viability, however, problems that occurred in the satellite operation, also prevented its use. The CBERS/CCD data can become a good source of data when considerate its cost, the possible radiometry correction, the lost of contact with the Landsat-7 and the launch of CBERS 2.
650 $aLand reform
650 $aLandsat
650 $aBase de Dados
650 $aReforma Agrária
650 $aSatélite
700 1 $aSOARES, V. P.
700 1 $aFERNANDES FILHO, E. I.
700 1 $aANTÔNIO, C.
700 1 $aRIBEIRO, A. S.
700 1 $aPEREIRA, R. de A.
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Embrapa Cerrados (CPAC) |
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