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Registro Completo |
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Biblioteca(s): |
Embrapa Cerrados. |
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Data corrente: |
14/08/2006 |
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Data da última atualização: |
14/08/2006 |
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Autoria: |
LOPES, H. O. da S.; ARAÚJO, V. L. de; TOMICH, T. R.; ANTUNES, R. C.; GONÇALVES, L. C. |
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Título: |
Efeitos da inclusão de uréia em misturas múltiplas em substituição ao farelo de soja sobre o desempenho e consumo de novilhas de corte. |
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Ano de publicação: |
2002 |
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Fonte/Imprenta: |
In: REUNIÃO ANUAL DA SOCIEDADE BRASILEIRA DE ZOOTECNIA, 39., 2002, Recife. A produção animal e a sociedade brasileira; UFRPE: há 90 anos formando o profissional das Ciências Agrárias: anais. Recife: Sociedade Brasileira de Zootecnia, 2002. |
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Idioma: |
Português |
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Conteúdo: |
Foram observados os efeitos da substituição de fonte proteíca vegetal por uréia sobre o desempenho e consumo de bezerros de corte em pastejo rotacionado de Brachiaria decumbens. Os tratamentos foram constituídos de 10,0%, 11,1% e 12,3% de uréia e um grupo testemunha (apenas sal mineralizado). O delineamento estatístico utilizado foi inteiramente casualizado e as médias comparadas pelo teste de Duncan, p<0,01. Foi observado redução do ganho de peso nos tratamentos com substituição parcial e total do farelo de soja. O consumo não foi afetado significativamente pela inclusão de uréia para os tratamentos 1, 2 e 3. O menor custo médio foi observado para o tratamento 4 (apenas sal mineral). |
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Thesagro: |
Ganho de Peso; Suplemento Alimentar. |
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Categoria do assunto: |
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Marc: |
LEADER 01521naa a2200193 a 4500
001 1569706
005 2006-08-14
008 2002 bl uuuu u00u1 u #d
100 1 $aLOPES, H. O. da S.
245 $aEfeitos da inclusão de uréia em misturas múltiplas em substituição ao farelo de soja sobre o desempenho e consumo de novilhas de corte.
260 $c2002
520 $aForam observados os efeitos da substituição de fonte proteíca vegetal por uréia sobre o desempenho e consumo de bezerros de corte em pastejo rotacionado de Brachiaria decumbens. Os tratamentos foram constituídos de 10,0%, 11,1% e 12,3% de uréia e um grupo testemunha (apenas sal mineralizado). O delineamento estatístico utilizado foi inteiramente casualizado e as médias comparadas pelo teste de Duncan, p<0,01. Foi observado redução do ganho de peso nos tratamentos com substituição parcial e total do farelo de soja. O consumo não foi afetado significativamente pela inclusão de uréia para os tratamentos 1, 2 e 3. O menor custo médio foi observado para o tratamento 4 (apenas sal mineral).
650 $aGanho de Peso
650 $aSuplemento Alimentar
700 1 $aARAÚJO, V. L. de
700 1 $aTOMICH, T. R.
700 1 $aANTUNES, R. C.
700 1 $aGONÇALVES, L. C.
773 $tIn: REUNIÃO ANUAL DA SOCIEDADE BRASILEIRA DE ZOOTECNIA, 39., 2002, Recife. A produção animal e a sociedade brasileira; UFRPE: há 90 anos formando o profissional das Ciências Agrárias: anais. Recife: Sociedade Brasileira de Zootecnia, 2002.
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Registro original: |
Embrapa Cerrados (CPAC) |
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Registro Completo
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Biblioteca(s): |
Embrapa Milho e Sorgo. |
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Data corrente: |
26/01/2023 |
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Data da última atualização: |
20/02/2024 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
ÁVILA, R. G.; MAGALHAES, P. C.; VITORINO, L. C.; BESSA, L. A.; SOUZA, K. R. D. de; QUEIROZ, R. B.; JAKELAITIS, A.; TEIXEIRA, M. B. |
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Afiliação: |
RONIEL GERALDO ÁVILA, Corporação Agro Simples; PAULO CESAR MAGALHAES, CNPMS; LUCIANA CRISTINA VITORINO, Instituto Federal Goiano; LAYARA ALEXANDRE BESSA, Instituto Federal Goiano; KAMILA REZENDE DÁZIO DE SOUZA, Universidade Federal de Alfenas; RAPHAEL BARROS QUEIROZ, Instituto Federal Goiano; ADRIANO JAKELAITIS, Instituto Federal Goiano; MARCONI BATISTA TEIXEIRA, Instituto Federal Goiano. |
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Título: |
Chitosan induces sorghum tolerance to water deficits by positively regulating photosynthesis and the production of primary metabolites, osmoregulators, and antioxidants. |
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Ano de publicação: |
2023 |
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Fonte/Imprenta: |
Journal of Soil Science and Plant Nutrition, v. 23, p. 1156–1172, 2023. |
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DOI: |
https://doi.org/10.1007/s42729-022-01111-4 |
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Idioma: |
Inglês |
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Conteúdo: |
Current climate change scenarios require strategies that mitigate the efects of water defcits. Given that chitosan stimulates induced resistance responses, we tested the hypothesis that foliar application of this polysaccharide can have positive efects on the primary metabolite, antioxidant, and osmoregulatory metabolisms of sorghum, mitigating the efects of water defcit on grain yield. Sorghum plants were cultivated under either irrigated or water-defcit conditions and were either treated or untreated with chitosan, and we assessed the following responses: water potential, gas exchange, nutritional status, biosynthesis of primary and osmoregulatory metabolites, the activity of the antioxidant system constituents, and hydrogen peroxide and malondialdehyde contents. An active methodology was used to impose water stress on plants grown in pots with 20 kg of soil, 06 replications per treatment. Sorghum plants subjected to water defcit that were treated with chitosan exhibited higher stomatal conductance and transpiration than the untreated plants. Water restriction reduced the nutrient contents of leaves, but in the irrigated plants, chitosan treatment increased the tissue contents of certain nutrients and leaf concentrations of total proteins and total amino acids. In the plants under water-defcit conditions that were treated with chitosan, an elevated photosynthetic rate contributed to an increase in carbohydrate accumulation and a higher production of panicle and grain dry biomass compared with the untreated plants. The activity of catalase and ascorbate peroxidase also increased in response to chitosan. Overall, chitosan was efective in enhancing the water defcit tolerance of sorghum plants cultivated under water-defcit conditions by 57%. With this work, we generate perspectives for studies focusing on the development of water-defcit-resistant sorghum lineages, by means of chitosan elicitation. MenosCurrent climate change scenarios require strategies that mitigate the efects of water defcits. Given that chitosan stimulates induced resistance responses, we tested the hypothesis that foliar application of this polysaccharide can have positive efects on the primary metabolite, antioxidant, and osmoregulatory metabolisms of sorghum, mitigating the efects of water defcit on grain yield. Sorghum plants were cultivated under either irrigated or water-defcit conditions and were either treated or untreated with chitosan, and we assessed the following responses: water potential, gas exchange, nutritional status, biosynthesis of primary and osmoregulatory metabolites, the activity of the antioxidant system constituents, and hydrogen peroxide and malondialdehyde contents. An active methodology was used to impose water stress on plants grown in pots with 20 kg of soil, 06 replications per treatment. Sorghum plants subjected to water defcit that were treated with chitosan exhibited higher stomatal conductance and transpiration than the untreated plants. Water restriction reduced the nutrient contents of leaves, but in the irrigated plants, chitosan treatment increased the tissue contents of certain nutrients and leaf concentrations of total proteins and total amino acids. In the plants under water-defcit conditions that were treated with chitosan, an elevated photosynthetic rate contributed to an increase in carbohydrate accumulation and a higher production of panicle and grain dry b... Mostrar Tudo |
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Palavras-Chave: |
Desempenho fotossintético; Estresse hídrico; Osmorregulação; Quitosana. |
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Thesagro: |
Antioxidante; Enzima; Fotossíntese; Sorgo Granífero. |
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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/doc/1151232/1/Chitosan-induces-sorghum-tolerance.pdf
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Marc: |
LEADER 02955naa a2200313 a 4500
001 2151232
005 2024-02-20
008 2023 bl uuuu u00u1 u #d
024 7 $ahttps://doi.org/10.1007/s42729-022-01111-4$2DOI
100 1 $aÁVILA, R. G.
245 $aChitosan induces sorghum tolerance to water deficits by positively regulating photosynthesis and the production of primary metabolites, osmoregulators, and antioxidants.$h[electronic resource]
260 $c2023
520 $aCurrent climate change scenarios require strategies that mitigate the efects of water defcits. Given that chitosan stimulates induced resistance responses, we tested the hypothesis that foliar application of this polysaccharide can have positive efects on the primary metabolite, antioxidant, and osmoregulatory metabolisms of sorghum, mitigating the efects of water defcit on grain yield. Sorghum plants were cultivated under either irrigated or water-defcit conditions and were either treated or untreated with chitosan, and we assessed the following responses: water potential, gas exchange, nutritional status, biosynthesis of primary and osmoregulatory metabolites, the activity of the antioxidant system constituents, and hydrogen peroxide and malondialdehyde contents. An active methodology was used to impose water stress on plants grown in pots with 20 kg of soil, 06 replications per treatment. Sorghum plants subjected to water defcit that were treated with chitosan exhibited higher stomatal conductance and transpiration than the untreated plants. Water restriction reduced the nutrient contents of leaves, but in the irrigated plants, chitosan treatment increased the tissue contents of certain nutrients and leaf concentrations of total proteins and total amino acids. In the plants under water-defcit conditions that were treated with chitosan, an elevated photosynthetic rate contributed to an increase in carbohydrate accumulation and a higher production of panicle and grain dry biomass compared with the untreated plants. The activity of catalase and ascorbate peroxidase also increased in response to chitosan. Overall, chitosan was efective in enhancing the water defcit tolerance of sorghum plants cultivated under water-defcit conditions by 57%. With this work, we generate perspectives for studies focusing on the development of water-defcit-resistant sorghum lineages, by means of chitosan elicitation.
650 $aAntioxidante
650 $aEnzima
650 $aFotossíntese
650 $aSorgo Granífero
653 $aDesempenho fotossintético
653 $aEstresse hídrico
653 $aOsmorregulação
653 $aQuitosana
700 1 $aMAGALHAES, P. C.
700 1 $aVITORINO, L. C.
700 1 $aBESSA, L. A.
700 1 $aSOUZA, K. R. D. de
700 1 $aQUEIROZ, R. B.
700 1 $aJAKELAITIS, A.
700 1 $aTEIXEIRA, M. B.
773 $tJournal of Soil Science and Plant Nutrition$gv. 23, p. 1156–1172, 2023.
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Embrapa Milho e Sorgo (CNPMS) |
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