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Registro Completo |
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Biblioteca(s): |
Embrapa Pesca e Aquicultura. |
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Data corrente: |
07/03/2012 |
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Data da última atualização: |
08/11/2012 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
PAIVA, A. J.; SILVA, S. C. da; PEREIRA, L. E. T.; CAMINHA, F. O.; PEREIRA, P. de M.; GUARDA, V. D. A. |
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Afiliação: |
ADENILSON JOSÉ PAIVA, ESALQ; SILA CARNEIRO DA SILVA, ESALQ; LILIAN ELGALISE TECHIO PEREIRA, ESALQ; FÁBIO OLEGÁRIO CAMINHA, ESALQ; PRISCILA DE MESQUITA PEREIRA, ESALQ; VITOR DEL ALAMO GUARDA, CNPASA. |
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Título: |
Morphogenesis on age categories of tillers in marandu palisadegrass. |
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Ano de publicação: |
2011 |
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Fonte/Imprenta: |
Scientia Agricola, Piracicaba, v. 68, n. 6, p. 626-631, nov./dez. 2011. |
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Idioma: |
Inglês |
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Conteúdo: |
Knowledge regarding morphogenetic characteristics has contributed to the understanding of plant responses to variations in climatic conditions and management practices. However, the original framework has been developed for temperate grass species, and indicates no ontogenetic effect on the expression of morphogenetic traits. Similar information for tropical grass species is scarce, but not less important. This experiment aimed at evaluating the influence of tiller age on the morphogenetic characteristics of continuously stocked marandu palisadegrass swards maintained at 30 cm and fertilized with nitrogen (N). Treatments corresponded to three nitrogen application rates (150, 300 and 450 kg ha?¹ of N) plus the control (no fertilization) and were assigned to experimental units (1,200 m2 paddocks) according to a complete randomized block design, with four replications. The following response variables were measured during autumn/winter (Jun. to Jul. 2007) and summer (Feb. to Mar. 2008): leaf appearance rate (LAR), leaf elongation rate (LER) and the age profile of the tiller population. In general, LAR and LER were higher on young (< 2 months old) relative to mature (2 to 4 months old) and old (> 4 months old) tillers during both autumn/winter and summer. During autumn/winter swards were mainly comprised of old tillers (> 4 months old), the opposite happening during summer, when they were mainly comprised of young tillers. Overall, there was no N effect within tiller age categories. Tiller age was an important factor interfering with the morphogenetic responses of marandu palisadegrass, indicating that there is an ontogenetic effect on plant morphogenesis that should be considered further in future studies of this nature. MenosKnowledge regarding morphogenetic characteristics has contributed to the understanding of plant responses to variations in climatic conditions and management practices. However, the original framework has been developed for temperate grass species, and indicates no ontogenetic effect on the expression of morphogenetic traits. Similar information for tropical grass species is scarce, but not less important. This experiment aimed at evaluating the influence of tiller age on the morphogenetic characteristics of continuously stocked marandu palisadegrass swards maintained at 30 cm and fertilized with nitrogen (N). Treatments corresponded to three nitrogen application rates (150, 300 and 450 kg ha?¹ of N) plus the control (no fertilization) and were assigned to experimental units (1,200 m2 paddocks) according to a complete randomized block design, with four replications. The following response variables were measured during autumn/winter (Jun. to Jul. 2007) and summer (Feb. to Mar. 2008): leaf appearance rate (LAR), leaf elongation rate (LER) and the age profile of the tiller population. In general, LAR and LER were higher on young (< 2 months old) relative to mature (2 to 4 months old) and old (> 4 months old) tillers during both autumn/winter and summer. During autumn/winter swards were mainly comprised of old tillers (> 4 months old), the opposite happening during summer, when they were mainly comprised of young tillers. Overall, there was no N effect within tiller age categor... Mostrar Tudo |
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Palavras-Chave: |
Morphogenetic characteristics; Tiller age. |
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Thesagro: |
Brachiaria brizantha; Nitrogênio. |
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Thesaurus Nal: |
Urochloa brizantha. |
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Categoria do assunto: |
-- |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/55334/1/sciag.pdf
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Marc: |
LEADER 02476naa a2200241 a 4500
001 1917883
005 2012-11-08
008 2011 bl uuuu u00u1 u #d
100 1 $aPAIVA, A. J.
245 $aMorphogenesis on age categories of tillers in marandu palisadegrass.$h[electronic resource]
260 $c2011
520 $aKnowledge regarding morphogenetic characteristics has contributed to the understanding of plant responses to variations in climatic conditions and management practices. However, the original framework has been developed for temperate grass species, and indicates no ontogenetic effect on the expression of morphogenetic traits. Similar information for tropical grass species is scarce, but not less important. This experiment aimed at evaluating the influence of tiller age on the morphogenetic characteristics of continuously stocked marandu palisadegrass swards maintained at 30 cm and fertilized with nitrogen (N). Treatments corresponded to three nitrogen application rates (150, 300 and 450 kg ha?¹ of N) plus the control (no fertilization) and were assigned to experimental units (1,200 m2 paddocks) according to a complete randomized block design, with four replications. The following response variables were measured during autumn/winter (Jun. to Jul. 2007) and summer (Feb. to Mar. 2008): leaf appearance rate (LAR), leaf elongation rate (LER) and the age profile of the tiller population. In general, LAR and LER were higher on young (< 2 months old) relative to mature (2 to 4 months old) and old (> 4 months old) tillers during both autumn/winter and summer. During autumn/winter swards were mainly comprised of old tillers (> 4 months old), the opposite happening during summer, when they were mainly comprised of young tillers. Overall, there was no N effect within tiller age categories. Tiller age was an important factor interfering with the morphogenetic responses of marandu palisadegrass, indicating that there is an ontogenetic effect on plant morphogenesis that should be considered further in future studies of this nature.
650 $aUrochloa brizantha
650 $aBrachiaria brizantha
650 $aNitrogênio
653 $aMorphogenetic characteristics
653 $aTiller age
700 1 $aSILVA, S. C. da
700 1 $aPEREIRA, L. E. T.
700 1 $aCAMINHA, F. O.
700 1 $aPEREIRA, P. de M.
700 1 $aGUARDA, V. D. A.
773 $tScientia Agricola, Piracicaba$gv. 68, n. 6, p. 626-631, nov./dez. 2011.
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Registro original: |
Embrapa Pesca e Aquicultura (CNPASA) |
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Registro Completo
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Biblioteca(s): |
Embrapa Instrumentação. |
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Data corrente: |
11/02/2016 |
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Data da última atualização: |
10/08/2018 |
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Tipo da produção científica: |
Artigo em Anais de Congresso |
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Autoria: |
OTONI, C. G.; LOREVICE, M. V.; MOURA, M. R. de; CORREA, D. S.; MATTOSO, L. H. C. |
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Afiliação: |
DANIEL SOUZA CORREA, CNPDIA; LUIZ HENRIQUE CAPPARELLI MATTOSO, CNPDIA. |
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Título: |
High pressure microfluidization reduces hydroxypropyl methylcellulose (HPMC) molecular weight but improves mechanical properties of microcrystalline cellulose (MCC)-reinforced HPMC films. |
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Ano de publicação: |
2015 |
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Fonte/Imprenta: |
In: BRAZILIAN MRS MEETING, 14., 2015, Rio de Janeiro. Program book... Rio de Janeiro: SBPMat, 2015. 1 p. |
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ISBN: |
978-85-63273-29-1 |
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Idioma: |
Português |
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Palavras-Chave: |
Evento. |
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Categoria do assunto: |
-- |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/181232/1/High-pressure-microfluidization-reduces-hydroxypropyl-methylcellulose.pdf
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Marc: |
LEADER 00690nam a2200169 a 4500
001 2036624
005 2018-08-10
008 2015 bl uuuu u00u1 u #d
020 $a978-85-63273-29-1
100 1 $aOTONI, C. G.
245 $aHigh pressure microfluidization reduces hydroxypropyl methylcellulose (HPMC) molecular weight but improves mechanical properties of microcrystalline cellulose (MCC)-reinforced HPMC films.$h[electronic resource]
260 $aIn: BRAZILIAN MRS MEETING, 14., 2015, Rio de Janeiro. Program book... Rio de Janeiro: SBPMat, 2015. 1 p.$c2015
653 $aEvento
700 1 $aLOREVICE, M. V.
700 1 $aMOURA, M. R. de
700 1 $aCORREA, D. S.
700 1 $aMATTOSO, L. H. C.
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Embrapa Instrumentação (CNPDIA) |
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