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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 |
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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Embrapa Milho e Sorgo (CNPMS) |
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Registro Completo
Biblioteca(s): |
Embrapa Algodão. |
Data corrente: |
11/04/2001 |
Data da última atualização: |
11/04/2001 |
Autoria: |
FREITAS, J. A. de; FALLIERI, J.; LANZA, M. A.; SILVA, P. J. da; FARIAS, R. S.; GONCALVES, N. P. |
Título: |
Definicao da epoca de plantio de algodoeiro precoce para regiao de Nova Porteirinha, MG. |
Ano de publicação: |
2000 |
Fonte/Imprenta: |
Revista de Oleaginosas e Fibrosas, v.4, n.2, p.93-101, 2000. |
Idioma: |
Português |
Palavras-Chave: |
Brasil; Growing and arid soil; Minas Gerais; Porteirinha. |
Thesagro: |
Algodão; Cultivo de Sequeiro; Gossypium Hirsutum. |
Thesaurus NAL: |
cotton. |
Categoria do assunto: |
-- |
Marc: |
LEADER 00749naa a2200265 a 4500 001 1271850 005 2001-04-11 008 2000 bl uuuu u00u1 u #d 100 1 $aFREITAS, J. A. de 245 $aDefinicao da epoca de plantio de algodoeiro precoce para regiao de Nova Porteirinha, MG. 260 $c2000 650 $acotton 650 $aAlgodão 650 $aCultivo de Sequeiro 650 $aGossypium Hirsutum 653 $aBrasil 653 $aGrowing and arid soil 653 $aMinas Gerais 653 $aPorteirinha 700 1 $aFALLIERI, J. 700 1 $aLANZA, M. A. 700 1 $aSILVA, P. J. da 700 1 $aFARIAS, R. S. 700 1 $aGONCALVES, N. P. 773 $tRevista de Oleaginosas e Fibrosas$gv.4, n.2, p.93-101, 2000.
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