Morphogenetic and structural characteristics of tillers of guinea grass of different age and grazing severities
Autor(a) principal: | |
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Data de Publicação: | 2010 |
Outros Autores: | , , , , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | LOCUS Repositório Institucional da UFV |
Texto Completo: | http://dx.doi.org/10.1590/S1516-35982011001000006 http://www.locus.ufv.br/handle/123456789/14955 |
Resumo: | The objective of this research was to evaluate the effects of tiller age on morphogenic and structural characteristics of guinea grass cv. Mombaca subjected to intermittent stocking and three stubble heights: 30 cm, 50 cm and 50-30 cm. Stubble heights were assigned to experimental units in a completely randomized block design with three replicates. Grazing was performed when canopy intercepted 95% of light incidence. Leaf appearance rate, leaf elongation rate and number of live leaves per tiller were higher in the summer when compared with the winter. Contrarily, stem elongation rate, phyllochron and leaf lifespan were lower in the summer when compared with the winter. During the summer, young tillers had higher leaf appearance and elongation rates when compared with the older ones. Young and mature tillers had the highest values of live leaves per tiller in the summer. There was no difference between summer and winter for the final length of leaf blade between tillers of the same age, except in mature tillers, which had higher final leaf length during the summer. Senescence rate of leaves was higher in young tillers, followed by mature and old tillers. Age of tiller affects morphogenic and structural characteristics of pasture, showing that young tillers have better growth compared with mature and old tillers. |
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Montagner, Denise BaptaglinNascimento Júnior, Domicio doSousa, Braulio Maia de LanaVilela, Hélio HenriqueEuclides, Valéria Pacheco BatistaSilva, Sila Carneiro daSbrissia, André FischerCarloto, Marciele Neves2017-12-13T16:29:54Z2017-12-13T16:29:54Z2010-12-291806-9290http://dx.doi.org/10.1590/S1516-35982011001000006http://www.locus.ufv.br/handle/123456789/14955The objective of this research was to evaluate the effects of tiller age on morphogenic and structural characteristics of guinea grass cv. Mombaca subjected to intermittent stocking and three stubble heights: 30 cm, 50 cm and 50-30 cm. Stubble heights were assigned to experimental units in a completely randomized block design with three replicates. Grazing was performed when canopy intercepted 95% of light incidence. Leaf appearance rate, leaf elongation rate and number of live leaves per tiller were higher in the summer when compared with the winter. Contrarily, stem elongation rate, phyllochron and leaf lifespan were lower in the summer when compared with the winter. During the summer, young tillers had higher leaf appearance and elongation rates when compared with the older ones. Young and mature tillers had the highest values of live leaves per tiller in the summer. There was no difference between summer and winter for the final length of leaf blade between tillers of the same age, except in mature tillers, which had higher final leaf length during the summer. Senescence rate of leaves was higher in young tillers, followed by mature and old tillers. Age of tiller affects morphogenic and structural characteristics of pasture, showing that young tillers have better growth compared with mature and old tillers.engRevista Brasileira de Zootecniav. 40, n. 10, p. 2105-2110, Oct. 2011EcophysiologyLight interceptionPanicum maximumStubble heightMorphogenetic and structural characteristics of tillers of guinea grass of different age and grazing severitiesinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfinfo:eu-repo/semantics/openAccessreponame:LOCUS Repositório Institucional da UFVinstname:Universidade Federal de Viçosa (UFV)instacron:UFVORIGINALv40n10a06.pdfv40n10a06.pdftexto completoapplication/pdf177136https://locus.ufv.br//bitstream/123456789/14955/1/v40n10a06.pdffae088050d2f32d26d12a997b175c29bMD51LICENSElicense.txtlicense.txttext/plain; charset=utf-81748https://locus.ufv.br//bitstream/123456789/14955/2/license.txt8a4605be74aa9ea9d79846c1fba20a33MD52THUMBNAILv40n10a06.pdf.jpgv40n10a06.pdf.jpgIM Thumbnailimage/jpeg4457https://locus.ufv.br//bitstream/123456789/14955/3/v40n10a06.pdf.jpg0b3b8c3af165da6ccd1b5fcffb8a5554MD53123456789/149552017-12-13 22:01:22.15oai:locus.ufv.br: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Repositório InstitucionalPUBhttps://www.locus.ufv.br/oai/requestfabiojreis@ufv.bropendoar:21452017-12-14T01:01:22LOCUS Repositório Institucional da UFV - Universidade Federal de Viçosa (UFV)false |
dc.title.en.fl_str_mv |
Morphogenetic and structural characteristics of tillers of guinea grass of different age and grazing severities |
title |
Morphogenetic and structural characteristics of tillers of guinea grass of different age and grazing severities |
spellingShingle |
Morphogenetic and structural characteristics of tillers of guinea grass of different age and grazing severities Montagner, Denise Baptaglin Ecophysiology Light interception Panicum maximum Stubble height |
title_short |
Morphogenetic and structural characteristics of tillers of guinea grass of different age and grazing severities |
title_full |
Morphogenetic and structural characteristics of tillers of guinea grass of different age and grazing severities |
title_fullStr |
Morphogenetic and structural characteristics of tillers of guinea grass of different age and grazing severities |
title_full_unstemmed |
Morphogenetic and structural characteristics of tillers of guinea grass of different age and grazing severities |
title_sort |
Morphogenetic and structural characteristics of tillers of guinea grass of different age and grazing severities |
author |
Montagner, Denise Baptaglin |
author_facet |
Montagner, Denise Baptaglin Nascimento Júnior, Domicio do Sousa, Braulio Maia de Lana Vilela, Hélio Henrique Euclides, Valéria Pacheco Batista Silva, Sila Carneiro da Sbrissia, André Fischer Carloto, Marciele Neves |
author_role |
author |
author2 |
Nascimento Júnior, Domicio do Sousa, Braulio Maia de Lana Vilela, Hélio Henrique Euclides, Valéria Pacheco Batista Silva, Sila Carneiro da Sbrissia, André Fischer Carloto, Marciele Neves |
author2_role |
author author author author author author author |
dc.contributor.author.fl_str_mv |
Montagner, Denise Baptaglin Nascimento Júnior, Domicio do Sousa, Braulio Maia de Lana Vilela, Hélio Henrique Euclides, Valéria Pacheco Batista Silva, Sila Carneiro da Sbrissia, André Fischer Carloto, Marciele Neves |
dc.subject.pt-BR.fl_str_mv |
Ecophysiology Light interception Panicum maximum Stubble height |
topic |
Ecophysiology Light interception Panicum maximum Stubble height |
description |
The objective of this research was to evaluate the effects of tiller age on morphogenic and structural characteristics of guinea grass cv. Mombaca subjected to intermittent stocking and three stubble heights: 30 cm, 50 cm and 50-30 cm. Stubble heights were assigned to experimental units in a completely randomized block design with three replicates. Grazing was performed when canopy intercepted 95% of light incidence. Leaf appearance rate, leaf elongation rate and number of live leaves per tiller were higher in the summer when compared with the winter. Contrarily, stem elongation rate, phyllochron and leaf lifespan were lower in the summer when compared with the winter. During the summer, young tillers had higher leaf appearance and elongation rates when compared with the older ones. Young and mature tillers had the highest values of live leaves per tiller in the summer. There was no difference between summer and winter for the final length of leaf blade between tillers of the same age, except in mature tillers, which had higher final leaf length during the summer. Senescence rate of leaves was higher in young tillers, followed by mature and old tillers. Age of tiller affects morphogenic and structural characteristics of pasture, showing that young tillers have better growth compared with mature and old tillers. |
publishDate |
2010 |
dc.date.issued.fl_str_mv |
2010-12-29 |
dc.date.accessioned.fl_str_mv |
2017-12-13T16:29:54Z |
dc.date.available.fl_str_mv |
2017-12-13T16:29:54Z |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://dx.doi.org/10.1590/S1516-35982011001000006 http://www.locus.ufv.br/handle/123456789/14955 |
dc.identifier.issn.none.fl_str_mv |
1806-9290 |
identifier_str_mv |
1806-9290 |
url |
http://dx.doi.org/10.1590/S1516-35982011001000006 http://www.locus.ufv.br/handle/123456789/14955 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.ispartofseries.pt-BR.fl_str_mv |
v. 40, n. 10, p. 2105-2110, Oct. 2011 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
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application/pdf |
dc.publisher.none.fl_str_mv |
Revista Brasileira de Zootecnia |
publisher.none.fl_str_mv |
Revista Brasileira de Zootecnia |
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Universidade Federal de Viçosa (UFV) |
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LOCUS Repositório Institucional da UFV |
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