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 | Acesso ao texto completo restrito à biblioteca da Embrapa Semiárido. Para informações adicionais entre em contato com cpatsa.biblioteca@embrapa.br. |
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Registro Completo |
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Biblioteca(s): |
Embrapa Semiárido. |
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Data corrente: |
21/06/2017 |
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Data da última atualização: |
04/01/2018 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
DANTAS, B. F.; ANGELOTTI, F.; ARAGÃO, C. A. |
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Afiliação: |
BARBARA FRANCA DANTAS, CPATSA; FRANCISLENE ANGELOTTI, CPATSA; CARLOS ALBERTO ARAGÃO, Professor da Universidade do Estado da Bahia-UNEB, Juazeiro, Bahia. |
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Título: |
Will increasing temperature and CO2 affect pumpkin early development in Brazilian Semi-Arid? |
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Ano de publicação: |
2017 |
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Fonte/Imprenta: |
Revista Geama, Recife, v. 9, n. 1, p. 51-57, abr./jun. 2017. |
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ISSN: |
2447-0740 |
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Idioma: |
Inglês |
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Conteúdo: |
With rising levels of CO2 in atmosphere, understanding possible impacts on development and growth of plants becomes increasingly important. The aim of this study was to evaluate interaction between different temperatures and CO2 levels in germination and early development of seedlings of different species of pumpkin. Seeds of Cucurbita pepo cultivars ?Caserta? and ?Redonda?, and Cucurbita maxima ?Coroa? were sown in trays of 36 cells and held in growth chambers with different combinations of levels of CO2 and day/night temperatures. The experimental design was completely randomized in a 2 X 3 factorial scheme with two levels of CO2 concentration (360 and 550ppm) and three day/night temperatures (26/20, 29/26 and 32/26°C), with four replicates of 18 seedlings for each treatment. CO2 levels used caused different effects among cultivars for most variables, but a significant change in physiological behavior of seedlings with increasing CO2 concentration was not observed. Increase in temperature led to physiological changes in both seeds and seedlings. The predicted conditions of increasing concentration of atmospheric CO2 and temperature are damaging to production of pumpkin seedlings |
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Palavras-Chave: |
CO2; Cucurbitácea; Moranga; Mudanças Climáticas; Pumpkin. |
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Thesagro: |
Abóbora; Cucurbitaceae; Etapa de Desenvolvimento da Planta; Germinação; Hortaliça. |
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Thesaurus Nal: |
Climate change; Germination. |
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Categoria do assunto: |
A Sistemas de Cultivo |
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Marc: |
LEADER 02043naa a2200301 a 4500
001 2071186
005 2018-01-04
008 2017 bl uuuu u00u1 u #d
022 $a2447-0740
100 1 $aDANTAS, B. F.
245 $aWill increasing temperature and CO2 affect pumpkin early development in Brazilian Semi-Arid?$h[electronic resource]
260 $c2017
520 $aWith rising levels of CO2 in atmosphere, understanding possible impacts on development and growth of plants becomes increasingly important. The aim of this study was to evaluate interaction between different temperatures and CO2 levels in germination and early development of seedlings of different species of pumpkin. Seeds of Cucurbita pepo cultivars ?Caserta? and ?Redonda?, and Cucurbita maxima ?Coroa? were sown in trays of 36 cells and held in growth chambers with different combinations of levels of CO2 and day/night temperatures. The experimental design was completely randomized in a 2 X 3 factorial scheme with two levels of CO2 concentration (360 and 550ppm) and three day/night temperatures (26/20, 29/26 and 32/26°C), with four replicates of 18 seedlings for each treatment. CO2 levels used caused different effects among cultivars for most variables, but a significant change in physiological behavior of seedlings with increasing CO2 concentration was not observed. Increase in temperature led to physiological changes in both seeds and seedlings. The predicted conditions of increasing concentration of atmospheric CO2 and temperature are damaging to production of pumpkin seedlings
650 $aClimate change
650 $aGermination
650 $aAbóbora
650 $aCucurbitaceae
650 $aEtapa de Desenvolvimento da Planta
650 $aGerminação
650 $aHortaliça
653 $aCO2
653 $aCucurbitácea
653 $aMoranga
653 $aMudanças Climáticas
653 $aPumpkin
700 1 $aANGELOTTI, F.
700 1 $aARAGÃO, C. A.
773 $tRevista Geama, Recife$gv. 9, n. 1, p. 51-57, abr./jun. 2017.
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Registro original: |
Embrapa Semiárido (CPATSA) |
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Voltar
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Registro Completo
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Biblioteca(s): |
Embrapa Milho e Sorgo. |
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Data corrente: |
13/07/2022 |
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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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Circulação/Nível: |
B - 1 |
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Autoria: |
REIS, C. O. dos; MAGALHAES, P. C.; AMBROSIO, A. dos S.; ALMEIDA, L. G.; CARVALHO, D. T.; SOUZA, T. C, de. |
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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. |
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Título: |
Do chitosan and its derivatives have the same protective effect on drought-contrasting maize genotypes? An analysis of physiological and production processes. |
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Ano de publicação: |
2022 |
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Fonte/Imprenta: |
Australian Journal of Crop Science, v. 16, n. 2, p. 208-215, 2022. |
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Idioma: |
Português |
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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 |
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Palavras-Chave: |
Quitosana. |
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Thesagro: |
Milho; Seca. |
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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/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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