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Registro Completo |
Biblioteca(s): |
Embrapa Cerrados. |
Data corrente: |
28/01/2005 |
Data da última atualização: |
07/08/2017 |
Autoria: |
ANDRADE, S. R. M. de; TEIXEIRA, J. B.; PINTO, A. C. de Q.; JUNQUEIRA, N. T. V.; FALEIRO, F. G.; VARGAS RAMOS, V. H. |
Título: |
Uso de antibióticos alternativos para controle de bactérias endógenas visando a micropropagação da mangueira. |
Ano de publicação: |
2004 |
Fonte/Imprenta: |
Planaltina, DF: Embrapa Cerrados, 2004. |
Descrição Física: |
1 folder. |
Idioma: |
Português |
Palavras-Chave: |
Controle; Mango; Plant diseases. |
Thesagro: |
Antibiótico; Bactéria; Doença de Planta; Explante; Manga; Mangifera Indica. |
Thesaurus Nal: |
antibiotics; disease control; explants. |
Categoria do assunto: |
-- |
URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/CPAC-2009/25334/1/p2004_49.pdf
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Marc: |
LEADER 00873nam a2200313 a 4500 001 1568291 005 2017-08-07 008 2004 bl uuuu u0uu1 u #d 100 1 $aANDRADE, S. R. M. de 245 $aUso de antibióticos alternativos para controle de bactérias endógenas visando a micropropagação da mangueira. 260 $aPlanaltina, DF: Embrapa Cerrados$c2004 300 $c1 folder. 650 $aantibiotics 650 $adisease control 650 $aexplants 650 $aAntibiótico 650 $aBactéria 650 $aDoença de Planta 650 $aExplante 650 $aManga 650 $aMangifera Indica 653 $aControle 653 $aMango 653 $aPlant diseases 700 1 $aTEIXEIRA, J. B. 700 1 $aPINTO, A. C. de Q. 700 1 $aJUNQUEIRA, N. T. V. 700 1 $aFALEIRO, F. G. 700 1 $aVARGAS RAMOS, V. H.
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Registro original: |
Embrapa Cerrados (CPAC) |
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Registro Completo
Biblioteca(s): |
Embrapa Milho e Sorgo. |
Data corrente: |
13/07/2022 |
Data da última atualização: |
13/07/2022 |
Tipo da produção científica: |
Artigo em Periódico Indexado |
Circulação/Nível: |
B - 1 |
Autoria: |
REIS, C. O. dos; MAGALHAES, P. C.; AMBROSIO, A. dos S.; ALMEIDA, L. G.; CARVALHO, D. T.; SOUZA, T. C, de. |
Afiliação: |
CAROLINE OLIVEIRA DOS REIS, Universidade Federal de Lavras; PAULO CESAR MAGALHAES, CNPMS; ALEXANDRA DOS SANTOS AMBRÓSIO, Universidade Federal de Alfenas; LORENA GABRIELA ALMEIDA, Universidade Federal de Lavras; DIOGO TEIXEIRA CARVALHO, Universidade Federal de Alfenas; THIAGO CORREA DE SOUZA, Universidade Federal de Alfenas. |
Título: |
Do chitosan and its derivatives have the same protective effect on drought-contrasting maize genotypes? An analysis of physiological and production processes. |
Ano de publicação: |
2022 |
Fonte/Imprenta: |
Australian Journal of Crop Science, v. 16, n. 2, p. 208-215, 2022. |
Idioma: |
Português |
Conteúdo: |
Water stress is among the most severe abiotic stress factors for maize production. The application of chitosan causes various responses in plants, as a function of its structure and concentration. Therefore, chemical modifications were proposed in this study to enhance the biological effects on plants. Hybrid maize plants with drought-contrasting characteristics, were subjected to water deficit and spraying with chitosan (CHI) and semi-synthesized chitosan derivatives, N‑Succinyl (SUC) and N,O‑Dicarboxymethyl (MCA). The obtained data show that the application of CHI and its derivatives (0.5 mg.plant-1 ) led to an increase in production for the two evaluated hybrids in comparison with the control under stress. Regarding leaf gas exchange, over the stress period, it was observed that the application of the MCA derivative yielded greater Pn than the other treatments in plants subjected to drought, in both hybrids. In the evaluation of chlorophyll content, there was an increase in this content through the application of CHI and its derivatives for both maize hybrids under study. With water recovery in plants, the water potential (Ψmd) of those treated with chitosan derivatives was greater than that of the irrigated control plants. In the quantification of proline concentration, higher values were observed in plants treated with MCA derivatives for the drought-sensitive hybrid. Chitosan derivatives, SUC and MCA, were responsible for higher starch concentrations in both maize hybrids. Evaluating the morphological characteristics of roots, the drought-tolerant hybrid showed higher means for all parameters evaluated when subjected to drought, and MCA was responsible for longer root length and greater mean root diameter. The results support the potential use of chitosan and its derivatives to increase tolerance to water deficit in maize. MenosWater stress is among the most severe abiotic stress factors for maize production. The application of chitosan causes various responses in plants, as a function of its structure and concentration. Therefore, chemical modifications were proposed in this study to enhance the biological effects on plants. Hybrid maize plants with drought-contrasting characteristics, were subjected to water deficit and spraying with chitosan (CHI) and semi-synthesized chitosan derivatives, N‑Succinyl (SUC) and N,O‑Dicarboxymethyl (MCA). The obtained data show that the application of CHI and its derivatives (0.5 mg.plant-1 ) led to an increase in production for the two evaluated hybrids in comparison with the control under stress. Regarding leaf gas exchange, over the stress period, it was observed that the application of the MCA derivative yielded greater Pn than the other treatments in plants subjected to drought, in both hybrids. In the evaluation of chlorophyll content, there was an increase in this content through the application of CHI and its derivatives for both maize hybrids under study. With water recovery in plants, the water potential (Ψmd) of those treated with chitosan derivatives was greater than that of the irrigated control plants. In the quantification of proline concentration, higher values were observed in plants treated with MCA derivatives for the drought-sensitive hybrid. Chitosan derivatives, SUC and MCA, were responsible for higher starch concentrations i... Mostrar Tudo |
Palavras-Chave: |
Quitosana. |
Thesagro: |
Milho; Seca. |
Categoria do assunto: |
F Plantas e Produtos de Origem Vegetal |
URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/doc/1144687/1/Do-chitosan-and-its-derivatives-have-the-same-protective-effect.pdf
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Marc: |
LEADER 02583naa a2200217 a 4500 001 2144687 005 2022-07-13 008 2022 bl uuuu u00u1 u #d 100 1 $aREIS, C. O. dos 245 $aDo chitosan and its derivatives have the same protective effect on drought-contrasting maize genotypes? An analysis of physiological and production processes.$h[electronic resource] 260 $c2022 520 $aWater stress is among the most severe abiotic stress factors for maize production. The application of chitosan causes various responses in plants, as a function of its structure and concentration. Therefore, chemical modifications were proposed in this study to enhance the biological effects on plants. Hybrid maize plants with drought-contrasting characteristics, were subjected to water deficit and spraying with chitosan (CHI) and semi-synthesized chitosan derivatives, N‑Succinyl (SUC) and N,O‑Dicarboxymethyl (MCA). The obtained data show that the application of CHI and its derivatives (0.5 mg.plant-1 ) led to an increase in production for the two evaluated hybrids in comparison with the control under stress. Regarding leaf gas exchange, over the stress period, it was observed that the application of the MCA derivative yielded greater Pn than the other treatments in plants subjected to drought, in both hybrids. In the evaluation of chlorophyll content, there was an increase in this content through the application of CHI and its derivatives for both maize hybrids under study. With water recovery in plants, the water potential (Ψmd) of those treated with chitosan derivatives was greater than that of the irrigated control plants. In the quantification of proline concentration, higher values were observed in plants treated with MCA derivatives for the drought-sensitive hybrid. Chitosan derivatives, SUC and MCA, were responsible for higher starch concentrations in both maize hybrids. Evaluating the morphological characteristics of roots, the drought-tolerant hybrid showed higher means for all parameters evaluated when subjected to drought, and MCA was responsible for longer root length and greater mean root diameter. The results support the potential use of chitosan and its derivatives to increase tolerance to water deficit in maize. 650 $aMilho 650 $aSeca 653 $aQuitosana 700 1 $aMAGALHAES, P. C. 700 1 $aAMBROSIO, A. dos S. 700 1 $aALMEIDA, L. G. 700 1 $aCARVALHO, D. T. 700 1 $aSOUZA, T. C, de 773 $tAustralian Journal of Crop Science$gv. 16, n. 2, p. 208-215, 2022.
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