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| 1. |  | SOUZA, N. M.; SANGOI, L.; MARSCHALEK, R.; STÜRMER, F. W.; SANTOS, S. B.; LEOLATO, L. S. BAIXAS TEMPERATURAS NA FASE DE MICROSPOROGÊNESE E MASSA DE 1000 GRÃOS EM GENÓTIPOS DE ARROZ IRRIGADO. In: CONGRESSO BRASILEIRO DE ARROZ IRRIGADO, 10., 2017, Gramado. Resumos... Gramado: SOSBAI, 2017.| Biblioteca(s): Epagri-Sede. |
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Registro Completo
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Biblioteca(s): |
Epagri-Sede. |
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Data corrente: |
11/10/2017 |
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Data da última atualização: |
11/10/2017 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Circulação/Nível: |
Nacional - B |
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Autoria: |
CACIQUE, I. S.; BISPO, W. M. S.; ARAUJO, L.; AUCIQUE-PÉREZ, C. E.; RIOS, J. A.; SILVA, L. C.; RODRIGUES, F. Á. |
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Título: |
Potassium-modulated physiological performance of mango plants infected by Ceratocystis fimbriata. |
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Ano de publicação: |
2017 |
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Fonte/Imprenta: |
Bragantia, Campinas, SP, v. 76, n. 4, p. 521-535, 2017. |
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Idioma: |
Inglês |
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Conteúdo: |
Mango wilt, caused by the fungus Ceratocystis fimbriata, is an important disease affecting mango production. In view of the beneficial effects of potassium (K) in other profitable crops and the
lack of information about the effect of macronutrients on mango wilt development, the present study aimed to evaluate how mango plants supplied with K respond physiologically when infected by
C. fimbriata. Mango plants (» 3 years old) from cultivar Uba were grown in plastic pots containing 58 mg of K.dm−3 (original K level based on the chemical analysis of the substrate) or in plastic pots with substrate
amended with a solution of 0.5 M potassium chloride (KCl) to achieve the rate of 240 mg K.dm−3. Disease symptoms were more pronounced in inoculated plants grown at the lower K level. Substantial declines in stomatal conductance, in line with decreases in the internal-to-ambient CO2 concentration ratio and the absence of detectable changes in the chlorophyll a fluorescence parameters, suggest that the decrease in
the net carbon assimilation rate is due, at least initially, to stomatal limitations. High concentrations of K and manganese were found in the stem tissues of inoculated plants and supplied with the highest
K rate, most likely due to the involvement of these tissues in the local development of defense mechanisms. The results of this study suggest that the supply of K favored the physiological performance of mango plants and their resistance against C. fimbriata infection. MenosMango wilt, caused by the fungus Ceratocystis fimbriata, is an important disease affecting mango production. In view of the beneficial effects of potassium (K) in other profitable crops and the
lack of information about the effect of macronutrients on mango wilt development, the present study aimed to evaluate how mango plants supplied with K respond physiologically when infected by
C. fimbriata. Mango plants (» 3 years old) from cultivar Uba were grown in plastic pots containing 58 mg of K.dm−3 (original K level based on the chemical analysis of the substrate) or in plastic pots with substrate
amended with a solution of 0.5 M potassium chloride (KCl) to achieve the rate of 240 mg K.dm−3. Disease symptoms were more pronounced in inoculated plants grown at the lower K level. Substantial declines in stomatal conductance, in line with decreases in the internal-to-ambient CO2 concentration ratio and the absence of detectable changes in the chlorophyll a fluorescence parameters, suggest that the decrease in
the net carbon assimilation rate is due, at least initially, to stomatal limitations. High concentrations of K and manganese were found in the stem tissues of inoculated plants and supplied with the highest
K rate, most likely due to the involvement of these tissues in the local development of defense mechanisms. The results of this study suggest that the supply of K favored the physiological performance of mango plants and their resistance against C. fimbriata inf... Mostrar Tudo |
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Palavras-Chave: |
gas exchange; host defense; Mangifera indica; mango wilt; plant nutrition; vascular disease. |
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Categoria do assunto: |
F Plantas e Produtos de Origem Vegetal |
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Marc: |
LEADER 02278naa a2200265 a 4500
001 1126740
005 2017-10-11
008 2017 bl uuuu u00u1 u #d
100 1 $aCACIQUE, I. S.
245 $aPotassium-modulated physiological performance of mango plants infected by Ceratocystis fimbriata.$h[electronic resource]
260 $c2017
520 $aMango wilt, caused by the fungus Ceratocystis fimbriata, is an important disease affecting mango production. In view of the beneficial effects of potassium (K) in other profitable crops and the lack of information about the effect of macronutrients on mango wilt development, the present study aimed to evaluate how mango plants supplied with K respond physiologically when infected by C. fimbriata. Mango plants (» 3 years old) from cultivar Uba were grown in plastic pots containing 58 mg of K.dm−3 (original K level based on the chemical analysis of the substrate) or in plastic pots with substrate amended with a solution of 0.5 M potassium chloride (KCl) to achieve the rate of 240 mg K.dm−3. Disease symptoms were more pronounced in inoculated plants grown at the lower K level. Substantial declines in stomatal conductance, in line with decreases in the internal-to-ambient CO2 concentration ratio and the absence of detectable changes in the chlorophyll a fluorescence parameters, suggest that the decrease in the net carbon assimilation rate is due, at least initially, to stomatal limitations. High concentrations of K and manganese were found in the stem tissues of inoculated plants and supplied with the highest K rate, most likely due to the involvement of these tissues in the local development of defense mechanisms. The results of this study suggest that the supply of K favored the physiological performance of mango plants and their resistance against C. fimbriata infection.
653 $agas exchange
653 $ahost defense
653 $aMangifera indica
653 $amango wilt
653 $aplant nutrition
653 $avascular disease
700 1 $aBISPO, W. M. S.
700 1 $aARAUJO, L.
700 1 $aAUCIQUE-PÉREZ, C. E.
700 1 $aRIOS, J. A.
700 1 $aSILVA, L. C.
700 1 $aRODRIGUES, F. Á.
773 $tBragantia, Campinas, SP$gv. 76, n. 4, p. 521-535, 2017.
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Epagri-Sede (Epagri-Sede) |
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