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Registro Completo |
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Biblioteca(s): |
Embrapa Pecuária Sul. |
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Data corrente: |
10/06/2013 |
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Data da última atualização: |
24/06/2013 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
ZANINE, A. de M.; NASCIMENTO JÚNIOR, D. do; SOUSA, B. M. de L.; SILVEIRA, M. C. T. da; SILVA, W. L. da; SANTOS, M. E. R. |
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Afiliação: |
Anderson de Moura Zanine, UFMT; Domicio do Nascimento Júnior, UFV; Braulio Maia de Lana Sousa, UFV; MARCIA CRISTINA T DA SILVEIRA, CPPSUL; Wilton Ladeira da Silva, UNESP; Manoel Eduardo Rozalino Santos, UFU. |
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Título: |
Tillering dynamics in Guinea grass pastures subjected to management strategies under rotational grazing. |
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Ano de publicação: |
2013 |
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Fonte/Imprenta: |
Revista Brasileira de Zootecnia, Viçosa, MG, v. 42, n. 3, p. 155-161, mar. 2013. |
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Idioma: |
Inglês |
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Conteúdo: |
This study was carried out to analyze the tillering profile of Guinea grass (Panicum maximum cv. Tanzania) pastures subjected to two grazing frequencies (time necessary to intercept 90 and 95% of the incoming light) and two post-grazing heights (30 and 50 cm) in the period from November 2005 to October 2006. The experimental design was of completely randomized blocks with three replications, in a 2 × 2 factorial arrangement. At the end of the spring, pastures managed with 90% light interception showed greater tiller appearance rates in relation to pastures managed with 95%, regardless of post-grazing height. In the summer and fall, pastures managed with post-grazing height of 30 cm showed higher tiller appearance rates in comparison with pastures managed at 50 cm, regardless of grazing frequency. Concerning the tiller mortality rates, in the summer, higher values were found for pastures managed at 90/50 and 95/30 (interception/height), intermediate values at 90/30 and lower values in those managed at 95/50. Pastures managed at 90/30, 95/30 and 95/50 in the fall presented greater tiller mortality rates than those managed at 90/50. These differences do not occur in the winter/beginning of spring. The stability index remained above 1 all through the experimental period. All management strategies evaluated are adequate for Guinea grass. |
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Palavras-Chave: |
Ecofiosiologia vegetal. |
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Thesagro: |
Pastejo. |
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Categoria do assunto: |
-- |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/84261/1/RBZ-Silveira.pdf
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Marc: |
LEADER 02033naa a2200205 a 4500
001 1959615
005 2013-06-24
008 2013 bl uuuu u00u1 u #d
100 1 $aZANINE, A. de M.
245 $aTillering dynamics in Guinea grass pastures subjected to management strategies under rotational grazing.$h[electronic resource]
260 $c2013
520 $aThis study was carried out to analyze the tillering profile of Guinea grass (Panicum maximum cv. Tanzania) pastures subjected to two grazing frequencies (time necessary to intercept 90 and 95% of the incoming light) and two post-grazing heights (30 and 50 cm) in the period from November 2005 to October 2006. The experimental design was of completely randomized blocks with three replications, in a 2 × 2 factorial arrangement. At the end of the spring, pastures managed with 90% light interception showed greater tiller appearance rates in relation to pastures managed with 95%, regardless of post-grazing height. In the summer and fall, pastures managed with post-grazing height of 30 cm showed higher tiller appearance rates in comparison with pastures managed at 50 cm, regardless of grazing frequency. Concerning the tiller mortality rates, in the summer, higher values were found for pastures managed at 90/50 and 95/30 (interception/height), intermediate values at 90/30 and lower values in those managed at 95/50. Pastures managed at 90/30, 95/30 and 95/50 in the fall presented greater tiller mortality rates than those managed at 90/50. These differences do not occur in the winter/beginning of spring. The stability index remained above 1 all through the experimental period. All management strategies evaluated are adequate for Guinea grass.
650 $aPastejo
653 $aEcofiosiologia vegetal
700 1 $aNASCIMENTO JÚNIOR, D. do
700 1 $aSOUSA, B. M. de L.
700 1 $aSILVEIRA, M. C. T. da
700 1 $aSILVA, W. L. da
700 1 $aSANTOS, M. E. R.
773 $tRevista Brasileira de Zootecnia, Viçosa, MG$gv. 42, n. 3, p. 155-161, mar. 2013.
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Registro original: |
Embrapa Pecuária Sul (CPPSUL) |
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Registro Completo
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Biblioteca(s): |
Embrapa Mandioca e Fruticultura. |
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Data corrente: |
05/12/2017 |
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Data da última atualização: |
14/12/2017 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Circulação/Nível: |
A - 2 |
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Autoria: |
FARIA, G. A.; FELIZARDO, L. M.; FERREIRA, A. F. A.; ROCHA, P. S.; SUZUKI, A. N.; SOUZA, A. da S.; JUNGHANS, T. G.; COSTA, M. A A. P. de C.; PEIXOTO, A. P. B.; MORAIS, A. R. de; LOPES. B. G.; OLIVEIRA, T. A. de. |
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Afiliação: |
GLÁUCIA AMORIM FARIA, Unesp; LUCAS MENEZES FELIZARDO, Unesp; ANTONIO FLÁVIO ARRUDA FERREIRA, Unesp; PAULA SUARES ROCHA, Unesp; ALINE NAMIE SUZUKI, Unesp; ANTONIO DA SILVA SOUZA, CNPMF; TATIANA GOES JUNGHANS, CNPMF; MARIA ANGÉLICA PEREIRA DE CARVALHO COSTA, UFRB; ANA PATRICIA BASTOS PEIXOTO, UEPB; AUGUSTO RAMALHO DE MORAIS, UFLA; BEATRIZ GARCIA LOPES, Unesp; TIAGO ALMEIDA DE OLIVEIRA, UEPB. |
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Título: |
Concentrations of silver nitrate in the in vitro development and conservation of Passiflora gibertii N. E. Brown. |
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Ano de publicação: |
2017 |
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Fonte/Imprenta: |
American Journal of Plant Sciences, v.8, p. 2944-2955, 2017. |
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ISSN: |
2158-2750 |
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Idioma: |
Inglês |
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Conteúdo: |
The aim of this study was to evaluate the effects of silver nitrate in the in vitro development and conservation of passion fruit plants. Experiments were carried out at the Laboratory of Culture and Tissues, in the National Cassava and Fruits Research Center (EMBRAPA), using microcuttings of Passiflora gibertii N. E. Br., previously cultivated in vitro. The microcuttings were placed in MS media supplemented with silver nitrate at concentrations of 0, 1, 2, 4 and 8 mg·L-1, and, during 30, 60 and 90 days, the following variables were identified: Shooting length (cm), number of roots, number and coloration of leaves. A completely randomized design with 30 replications in a split-plot scheme was employed. Polynomial regression equations were adjusted in analysis of variance to compare averages of treatments. The obtained results support the assumption of high sensitivity of passion fruit tissues to ethylene, which reflects in the lost of vigor and in the induction of culture senescence by its accumulation. Based on obtained results, and in order to mitigate this problem, it is possible to indicate an addition of 2 mg·L-1 of silver nitrate in culture media, for the micropropagation of passion fruit plant, allowing the controlling of the atmosphere inside the culture test tubes, during the establishment of explants and other steps of the process. |
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Thesagro: |
Maracujá. |
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Categoria do assunto: |
-- |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/168236/1/Concentrations-of-silver-nitrate-P.-gibertii-2017-publicado.pdf
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Marc: |
LEADER 02198naa a2200277 a 4500
001 2081570
005 2017-12-14
008 2017 bl uuuu u00u1 u #d
022 $a2158-2750
100 1 $aFARIA, G. A.
245 $aConcentrations of silver nitrate in the in vitro development and conservation of Passiflora gibertii N. E. Brown.$h[electronic resource]
260 $c2017
520 $aThe aim of this study was to evaluate the effects of silver nitrate in the in vitro development and conservation of passion fruit plants. Experiments were carried out at the Laboratory of Culture and Tissues, in the National Cassava and Fruits Research Center (EMBRAPA), using microcuttings of Passiflora gibertii N. E. Br., previously cultivated in vitro. The microcuttings were placed in MS media supplemented with silver nitrate at concentrations of 0, 1, 2, 4 and 8 mg·L-1, and, during 30, 60 and 90 days, the following variables were identified: Shooting length (cm), number of roots, number and coloration of leaves. A completely randomized design with 30 replications in a split-plot scheme was employed. Polynomial regression equations were adjusted in analysis of variance to compare averages of treatments. The obtained results support the assumption of high sensitivity of passion fruit tissues to ethylene, which reflects in the lost of vigor and in the induction of culture senescence by its accumulation. Based on obtained results, and in order to mitigate this problem, it is possible to indicate an addition of 2 mg·L-1 of silver nitrate in culture media, for the micropropagation of passion fruit plant, allowing the controlling of the atmosphere inside the culture test tubes, during the establishment of explants and other steps of the process.
650 $aMaracujá
700 1 $aFELIZARDO, L. M.
700 1 $aFERREIRA, A. F. A.
700 1 $aROCHA, P. S.
700 1 $aSUZUKI, A. N.
700 1 $aSOUZA, A. da S.
700 1 $aJUNGHANS, T. G.
700 1 $aCOSTA, M. A A. P. de C.
700 1 $aPEIXOTO, A. P. B.
700 1 $aMORAIS, A. R. de
700 1 $aLOPES. B. G.
700 1 $aOLIVEIRA, T. A. de
773 $tAmerican Journal of Plant Sciences$gv.8, p. 2944-2955, 2017.
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Registro original: |
Embrapa Mandioca e Fruticultura (CNPMF) |
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