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Registro Completo |
Biblioteca(s): |
Embrapa Algodão. |
Data corrente: |
24/05/2012 |
Data da última atualização: |
24/05/2012 |
Autoria: |
FREIRE, E. C.; FARIAS, F. J. C.; AGUIAR, P. H.; ARAUJO, A. E. de; ARANTES, E. M. |
Afiliação: |
ELEUSIO CURVELO FREIRE; FRANCISCO JOSE CORREIA FARIAS, CNPA; PAULO HUGO AGUIAR; ALDERI EMIDIO DE ARAUJO, CNPA; EURIPEDES MAXIMIANO ARANTES. |
Título: |
Comportamento de novas cultivares e linhagens com relação a doenças no Centro-Oeste safra 1998/1999. |
Ano de publicação: |
1999 |
Fonte/Imprenta: |
Campina Grande: EMBRAPA- CNPA, 1999. |
Páginas: |
6 p. |
Série: |
(Embrapa Algodão. Comunicado Técnico, 99). |
Idioma: |
Português |
Palavras-Chave: |
Centro-oeste; Nova linhagem. |
Thesagro: |
Algodão. |
Categoria do assunto: |
-- |
URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/59990/1/COMTEC99.pdf
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Marc: |
LEADER 00617nam a2200205 a 4500 001 1925340 005 2012-05-24 008 1999 bl uuuu u0uu1 u #d 100 1 $aFREIRE, E. C. 245 $aComportamento de novas cultivares e linhagens com relação a doenças no Centro-Oeste safra 1998/1999. 260 $aCampina Grande: EMBRAPA- CNPA$c1999 300 $a6 p. 490 $a(Embrapa Algodão. Comunicado Técnico, 99). 650 $aAlgodão 653 $aCentro-oeste 653 $aNova linhagem 700 1 $aFARIAS, F. J. C. 700 1 $aAGUIAR, P. H. 700 1 $aARAUJO, A. E. de 700 1 $aARANTES, E. M.
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Registro original: |
Embrapa Algodão (CNPA) |
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Registro Completo
Biblioteca(s): |
Embrapa Gado de Leite. |
Data corrente: |
19/12/2018 |
Data da última atualização: |
24/01/2023 |
Tipo da produção científica: |
Artigo em Periódico Indexado |
Circulação/Nível: |
A - 2 |
Autoria: |
AUAD, A. M.; RESENDE, T. T. de. |
Afiliação: |
ALEXANDER MACHADO AUAD, CNPGL; TIAGO TEIXEIRA DE RESENDE, CNPGL. |
Título: |
Use of chemical inducers as a resistance trigger in Brachiaria grasses and sugarcane. |
Ano de publicação: |
2018 |
Fonte/Imprenta: |
Florida Entomologist, v. 101, n. 1, p. 119-124, 2018. |
DOI: |
10.1653/024.101.0121 |
Idioma: |
Inglês |
Conteúdo: |
Abstract Chemical inducers have relevant roles in activating the defense responses of plants to insects. The present research examines the defense mechanisms of Brachiaria (Poaceae) grasses and sugarcane cultivars exposed to exogenous of chemical inducers with and without injury due to Mahanarva spectabilis (Distant) (Hemiptera: Cercopidae). Plants were subjected to herbivory by spittlebug nymphs and to 3 chemical inducers: salicylic acid, silicic acid, and nitric oxide. Dry matter was calculated at 15 d after induction, and extraction and quantification of phenolic compounds were performed. The phenolic content and percentage of dry matter of the plants was evaluated by analysis of variance, and means were compared by the Scott-Knott test (P < 0.005). Changes in dry matter were assessed with regard to interactions between inducers and Brachiaria roots and sugarcane shoots. Salicylic acid, silicic acid, and nitric oxide, as well as attack by M. spectabilis, triggered alterations in phenolic contents. The highest and lowest concentrations of phenolic compounds were found in the standard cultivar susceptible (cv. Basilik) and resistant to the insect pest (cv. Marandu), respectively. However, the results showed that inducers failed to impact the defense mechanism of Brachiaria cultivars and that assessment of total phenolic compounds is not the most adequate approach for measuring resistance in these cultivars. In sugarcane, inducers did not appear to act on defense mechanisms, though the resistant cultivar did exhibit a greater phenolic content. Hence, the use of the above chemical inducers is not useful for triggering resistance in Bracharia and sugarcane. MenosAbstract Chemical inducers have relevant roles in activating the defense responses of plants to insects. The present research examines the defense mechanisms of Brachiaria (Poaceae) grasses and sugarcane cultivars exposed to exogenous of chemical inducers with and without injury due to Mahanarva spectabilis (Distant) (Hemiptera: Cercopidae). Plants were subjected to herbivory by spittlebug nymphs and to 3 chemical inducers: salicylic acid, silicic acid, and nitric oxide. Dry matter was calculated at 15 d after induction, and extraction and quantification of phenolic compounds were performed. The phenolic content and percentage of dry matter of the plants was evaluated by analysis of variance, and means were compared by the Scott-Knott test (P < 0.005). Changes in dry matter were assessed with regard to interactions between inducers and Brachiaria roots and sugarcane shoots. Salicylic acid, silicic acid, and nitric oxide, as well as attack by M. spectabilis, triggered alterations in phenolic contents. The highest and lowest concentrations of phenolic compounds were found in the standard cultivar susceptible (cv. Basilik) and resistant to the insect pest (cv. Marandu), respectively. However, the results showed that inducers failed to impact the defense mechanism of Brachiaria cultivars and that assessment of total phenolic compounds is not the most adequate approach for measuring resistance in these cultivars. In sugarcane, inducers did not appear to act on defense mechanisms,... Mostrar Tudo |
Palavras-Chave: |
Herbivory. |
Thesaurus NAL: |
Forage; Induced resistance; Phenolic compounds. |
Categoria do assunto: |
F Plantas e Produtos de Origem Vegetal |
URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/188928/1/Artigo-Florida-Entomol-Alexander-Use.pdf
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Marc: |
LEADER 02263naa a2200193 a 4500 001 2102077 005 2023-01-24 008 2018 bl uuuu u00u1 u #d 024 7 $a10.1653/024.101.0121$2DOI 100 1 $aAUAD, A. M. 245 $aUse of chemical inducers as a resistance trigger in Brachiaria grasses and sugarcane.$h[electronic resource] 260 $c2018 520 $aAbstract Chemical inducers have relevant roles in activating the defense responses of plants to insects. The present research examines the defense mechanisms of Brachiaria (Poaceae) grasses and sugarcane cultivars exposed to exogenous of chemical inducers with and without injury due to Mahanarva spectabilis (Distant) (Hemiptera: Cercopidae). Plants were subjected to herbivory by spittlebug nymphs and to 3 chemical inducers: salicylic acid, silicic acid, and nitric oxide. Dry matter was calculated at 15 d after induction, and extraction and quantification of phenolic compounds were performed. The phenolic content and percentage of dry matter of the plants was evaluated by analysis of variance, and means were compared by the Scott-Knott test (P < 0.005). Changes in dry matter were assessed with regard to interactions between inducers and Brachiaria roots and sugarcane shoots. Salicylic acid, silicic acid, and nitric oxide, as well as attack by M. spectabilis, triggered alterations in phenolic contents. The highest and lowest concentrations of phenolic compounds were found in the standard cultivar susceptible (cv. Basilik) and resistant to the insect pest (cv. Marandu), respectively. However, the results showed that inducers failed to impact the defense mechanism of Brachiaria cultivars and that assessment of total phenolic compounds is not the most adequate approach for measuring resistance in these cultivars. In sugarcane, inducers did not appear to act on defense mechanisms, though the resistant cultivar did exhibit a greater phenolic content. Hence, the use of the above chemical inducers is not useful for triggering resistance in Bracharia and sugarcane. 650 $aForage 650 $aInduced resistance 650 $aPhenolic compounds 653 $aHerbivory 700 1 $aRESENDE, T. T. de 773 $tFlorida Entomologist$gv. 101, n. 1, p. 119-124, 2018.
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Registro original: |
Embrapa Gado de Leite (CNPGL) |
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