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Registro Completo |
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Biblioteca(s): |
Embrapa Unidades Centrais. |
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Data corrente: |
21/07/2000 |
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Data da última atualização: |
12/05/2020 |
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Autoria: |
SANTOS, M. do C. S. dos; TABOSA, J. N.; DIAS, F. M.; FREITAS, E. V. de; LIRA, M. de A. |
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Afiliação: |
Maria do Carmo Santana dos Santos, IPA; José Nildo Tabosa, IPA; Flávio Marcos Dias, IPA; Erinaldo Viana de Feitas, IPA; Mário de Andrade Lira, IPA. |
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Título: |
Comportamento de clones de capim-elefante e de híbridos de capim-elefante x milheto no semi-árido do nordeste do Brasil. |
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Ano de publicação: |
1994 |
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Fonte/Imprenta: |
Pesquisa Agropecuária Brasileira, Brasília, DF, v. 29, n. 10, p. 1609-1615. out. 1994. |
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Idioma: |
Português |
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Notas: |
Título em inglês: Performance of elephant grass and elephant grass x pearl millet hybrids in the Semi-arid Region of Northeast Brazil. |
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Conteúdo: |
Foram avaliados 41 clones de capim-elefante (Pennisetum purpureum Schum.) e de capim-elefante x milheto (Pennisetum americanum (L.) Leeke), durante os anos de 1986 e 1987 em condições de sequeiro no Campo Experimental de Arcoverde, localizado no Agreste Semi-Árido de Pernambuco. O objetivo do trabalho foi identificar e selecionar clones adaptados à região. O delineamento experimental utilizado foi o de blocos ao acaso, com arranjo de grupos de experimento com tratamento comum. Foram observados os parâmetros produção de matéria seca, altura da planta e relação folhas/colmo. A análise de variância relativa a todos os caracteres avaliados revelou diferenças significativas entre os clones. Dos 41 materiais avaliados, 9 apresentaram rendimento de matéria seca entre 16,0 e 18,8 t/ha, para os clones Itapemirim e Taiwan A-144, respectivamente. No que se refere à altura da planta e à relação folha/colmo, detectaram-se variações de 136 a 236 cm, e de 0,40 a 0,81 para os respectivos parâmetros, com relação aos 41 clones em estudo. A correlação entre os parâmetros produção de matéria seca x altura da planta apresentou-se positiva e significativa. |
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Palavras-Chave: |
Altura de plantas; Avaliação de clones; Folhas. |
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Thesagro: |
Caule; Matéria Seca. |
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Categoria do assunto: |
-- |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/AI-SEDE/20309/1/pab16_out_94.pdf
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Marc: |
LEADER 02049naa a2200241 a 4500
001 1105184
005 2020-05-12
008 1994 bl uuuu u00u1 u #d
100 1 $aSANTOS, M. do C. S. dos
245 $aComportamento de clones de capim-elefante e de híbridos de capim-elefante x milheto no semi-árido do nordeste do Brasil.
260 $c1994
500 $aTítulo em inglês: Performance of elephant grass and elephant grass x pearl millet hybrids in the Semi-arid Region of Northeast Brazil.
520 $aForam avaliados 41 clones de capim-elefante (Pennisetum purpureum Schum.) e de capim-elefante x milheto (Pennisetum americanum (L.) Leeke), durante os anos de 1986 e 1987 em condições de sequeiro no Campo Experimental de Arcoverde, localizado no Agreste Semi-Árido de Pernambuco. O objetivo do trabalho foi identificar e selecionar clones adaptados à região. O delineamento experimental utilizado foi o de blocos ao acaso, com arranjo de grupos de experimento com tratamento comum. Foram observados os parâmetros produção de matéria seca, altura da planta e relação folhas/colmo. A análise de variância relativa a todos os caracteres avaliados revelou diferenças significativas entre os clones. Dos 41 materiais avaliados, 9 apresentaram rendimento de matéria seca entre 16,0 e 18,8 t/ha, para os clones Itapemirim e Taiwan A-144, respectivamente. No que se refere à altura da planta e à relação folha/colmo, detectaram-se variações de 136 a 236 cm, e de 0,40 a 0,81 para os respectivos parâmetros, com relação aos 41 clones em estudo. A correlação entre os parâmetros produção de matéria seca x altura da planta apresentou-se positiva e significativa.
650 $aCaule
650 $aMatéria Seca
653 $aAltura de plantas
653 $aAvaliação de clones
653 $aFolhas
700 1 $aTABOSA, J. N.
700 1 $aDIAS, F. M.
700 1 $aFREITAS, E. V. de
700 1 $aLIRA, M. de A.
773 $tPesquisa Agropecuária Brasileira, Brasília, DF$gv. 29, n. 10, p. 1609-1615. out. 1994.
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Registro original: |
Embrapa Unidades Centrais (AI-SEDE) |
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Registro Completo
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Biblioteca(s): |
Embrapa Clima Temperado. |
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Data corrente: |
04/08/2021 |
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Data da última atualização: |
04/08/2021 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Circulação/Nível: |
B - 5 |
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Autoria: |
REISSIG, G. N.; OLIVEIRA, T. F. DE C.; OLIVEIRA, R. P. de; POSSO, D. A.; PARISE, A. G.; NAVA, D. E. |
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Afiliação: |
GABRIELA NIEMEYER REISSIG, UFPEL; THIAGO FRANCISCO DE CARVALHO OLIVEIRA, UFPEL; RICARDO PADILHA DE OLIVEIRA, UFPEL; DOUGLAS ANTÔNIO POSSO, UFPEL; ANDRÉ GEREMIA PARISE, UFPEL; DORI EDSON NAVA, CPACT. |
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Título: |
Fruit herbivory alters plant electrome: evidence for fruit-shoot long-distance electrical signaling in tomato plants. |
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Ano de publicação: |
2021 |
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Fonte/Imprenta: |
Frontiers in Sustainable Food Systems, v. 5, Article 65, July 2021. |
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Idioma: |
Inglês |
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Conteúdo: |
The electrical activity of tomato plants subjected to fruit herbivory was investigated. The study aimed to test the hypothesis that tomato fruits transmit long-distance electrical signals to the shoot when subjected to herbivory. For such, time series classification by machine learning techniques and analyses related to the oxidative response were employed. Tomato plants (cv. ?Micro-Tom?) were placed into a Faraday?s cage and an electrode pair was inserted in the fruit?s peduncle. Helicoverpa armigera caterpillars were placed on the fruit (either green and ripe) for 24 h. The time series were recorded before and after the fruit?s exposure of the caterpillars. The plant material for chemical analyses was collected 24 and 48 h after the end of the acquisition of electrophysiological data. The time series were analyzed by the following techniques: Fast Fourier Transform (FFT), Wavelet Transform, Power Spectral Density (PSD), and Approximate Entropy. The following features from FFT, PSD, and Wavelet Transform were used for PCA (Principal Component Analysis): average, maximum and minimum value, variance, skewness, and kurtosis. Additionally, these features were used in Machine Learning (ML) analyses for looking for classifiable patterns between tomato plants before and after fruit herbivory. Also, we compared the electrome before and after herbivory in the green and ripe fruits. To evaluate an oxidative response in different organs, hydrogen peroxide, superoxide anion, catalase, ascorbate peroxidase, guaiacol peroxidase, and superoxide dismutase activity were evaluated in fruit and leaves. The results show with 90% of accuracy that the electrome registered in the fruit?s peduncle before herbivory is different from the electrome during predation on the fruits. Interestingly, there was also a sharp difference in the electrome of the green and ripe fruits? peduncles before, but not during, the herbivory, which demonstrates that the signals generated by the herbivory stand over the others. Biochemical analysis showed that herbivory in the fruit triggered an oxidative response in other parts of the plant. Here, we demonstrate that the fruit perceives biotic stimuli and transmits electrical signals to the shoot of tomato plants. This study raises new possibilities for studies involving electrical signals in signaling and systemic response, as well as for the applicability of ML to classify electrophysiological data and its use in early diagnosis. MenosThe electrical activity of tomato plants subjected to fruit herbivory was investigated. The study aimed to test the hypothesis that tomato fruits transmit long-distance electrical signals to the shoot when subjected to herbivory. For such, time series classification by machine learning techniques and analyses related to the oxidative response were employed. Tomato plants (cv. ?Micro-Tom?) were placed into a Faraday?s cage and an electrode pair was inserted in the fruit?s peduncle. Helicoverpa armigera caterpillars were placed on the fruit (either green and ripe) for 24 h. The time series were recorded before and after the fruit?s exposure of the caterpillars. The plant material for chemical analyses was collected 24 and 48 h after the end of the acquisition of electrophysiological data. The time series were analyzed by the following techniques: Fast Fourier Transform (FFT), Wavelet Transform, Power Spectral Density (PSD), and Approximate Entropy. The following features from FFT, PSD, and Wavelet Transform were used for PCA (Principal Component Analysis): average, maximum and minimum value, variance, skewness, and kurtosis. Additionally, these features were used in Machine Learning (ML) analyses for looking for classifiable patterns between tomato plants before and after fruit herbivory. Also, we compared the electrome before and after herbivory in the green and ripe fruits. To evaluate an oxidative response in different organs, hydrogen peroxide, superoxide anion, catalase, ... Mostrar Tudo |
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Palavras-Chave: |
Helicoverpa amigera. |
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Thesagro: |
Tomate. |
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Thesaurus NAL: |
Stress response. |
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Categoria do assunto: |
-- |
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URL: |
https://www.alice.cnptia.embrapa.br/alice/bitstream/doc/1133234/1/Artigo-fsufs-05-657401.pdf
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Marc: |
LEADER 03162naa a2200217 a 4500
001 2133234
005 2021-08-04
008 2021 bl uuuu u00u1 u #d
100 1 $aREISSIG, G. N.
245 $aFruit herbivory alters plant electrome$bevidence for fruit-shoot long-distance electrical signaling in tomato plants.$h[electronic resource]
260 $c2021
520 $aThe electrical activity of tomato plants subjected to fruit herbivory was investigated. The study aimed to test the hypothesis that tomato fruits transmit long-distance electrical signals to the shoot when subjected to herbivory. For such, time series classification by machine learning techniques and analyses related to the oxidative response were employed. Tomato plants (cv. ?Micro-Tom?) were placed into a Faraday?s cage and an electrode pair was inserted in the fruit?s peduncle. Helicoverpa armigera caterpillars were placed on the fruit (either green and ripe) for 24 h. The time series were recorded before and after the fruit?s exposure of the caterpillars. The plant material for chemical analyses was collected 24 and 48 h after the end of the acquisition of electrophysiological data. The time series were analyzed by the following techniques: Fast Fourier Transform (FFT), Wavelet Transform, Power Spectral Density (PSD), and Approximate Entropy. The following features from FFT, PSD, and Wavelet Transform were used for PCA (Principal Component Analysis): average, maximum and minimum value, variance, skewness, and kurtosis. Additionally, these features were used in Machine Learning (ML) analyses for looking for classifiable patterns between tomato plants before and after fruit herbivory. Also, we compared the electrome before and after herbivory in the green and ripe fruits. To evaluate an oxidative response in different organs, hydrogen peroxide, superoxide anion, catalase, ascorbate peroxidase, guaiacol peroxidase, and superoxide dismutase activity were evaluated in fruit and leaves. The results show with 90% of accuracy that the electrome registered in the fruit?s peduncle before herbivory is different from the electrome during predation on the fruits. Interestingly, there was also a sharp difference in the electrome of the green and ripe fruits? peduncles before, but not during, the herbivory, which demonstrates that the signals generated by the herbivory stand over the others. Biochemical analysis showed that herbivory in the fruit triggered an oxidative response in other parts of the plant. Here, we demonstrate that the fruit perceives biotic stimuli and transmits electrical signals to the shoot of tomato plants. This study raises new possibilities for studies involving electrical signals in signaling and systemic response, as well as for the applicability of ML to classify electrophysiological data and its use in early diagnosis.
650 $aStress response
650 $aTomate
653 $aHelicoverpa amigera
700 1 $aOLIVEIRA, T. F. DE C.
700 1 $aOLIVEIRA, R. P. de
700 1 $aPOSSO, D. A.
700 1 $aPARISE, A. G.
700 1 $aNAVA, D. E.
773 $tFrontiers in Sustainable Food Systems$gv. 5, Article 65, July 2021.
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