Morphogenetic and structural comparative characterization of tropical forage grass cultivars under free growth
Autor(a) principal: | |
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Data de Publicação: | 2010 |
Outros Autores: | , , , , , , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Scientia Agrícola (Online) |
Texto Completo: | https://www.revistas.usp.br/sa/article/view/22559 |
Resumo: | Understanding of the morphogenetic characteristics allows comprehension of aspects related to the form and function of forage plants, providing opportunities to identify potentially high productive plants and distinct defoliation management requirements. The objective of this experiment was to carry out a comparative study of ten tropical forage grasses using morphogenetic and structural variables. Treatments corresponded to grasses of the Panicum genus (P. maximum cultivars Tanzânia and Mombaça) and the Brachiaria genus (B. brizantha cultivars Piatã, Marandu, Xaraés, Capiporã and Arapoty; B. decumbens cultivar Basilisk; B. humidicola cultivars Comum and Tupi), evaluated under free growth conditions.. Response variables were leaf appearance and elongation rates, phyllochron, stem elongation rate, final leaf length, number of live leaves per tiller, leaf life span and tiller appearance, death and survival rates. There was difference between cultivars for these variables, indicating a large variability within plants. Considering the morphogenetic and structural variables of leaves and tillers, B. brizantha had a similar pattern of variation to those of P. maximum, and B. Decumbens, similar to those of B. humidicola. Tiller appearance was large at the onset of the experiment and second and third generations comprised the large majority of tiller population for the cultivars Mombaça, Tanzânia, Xaraés and Capiporã. Group analysis based on plant morphogenetic and structural characteristics of leaves and tillers was an interesting way of grouping cultivars, indicating the importance and the potential of using morphogenesis in plant selection and evaluation programmes. |
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Morphogenetic and structural comparative characterization of tropical forage grass cultivars under free growth Caracterização morfogênica e estrutural comparativa de cultivares de gramíneas forrageiras tropicais sob crescimento livre BrachiariaPanicumvariáveis morfogênicas e estruturaisBrachiariaPanicummorphogenetic and structural variables Understanding of the morphogenetic characteristics allows comprehension of aspects related to the form and function of forage plants, providing opportunities to identify potentially high productive plants and distinct defoliation management requirements. The objective of this experiment was to carry out a comparative study of ten tropical forage grasses using morphogenetic and structural variables. Treatments corresponded to grasses of the Panicum genus (P. maximum cultivars Tanzânia and Mombaça) and the Brachiaria genus (B. brizantha cultivars Piatã, Marandu, Xaraés, Capiporã and Arapoty; B. decumbens cultivar Basilisk; B. humidicola cultivars Comum and Tupi), evaluated under free growth conditions.. Response variables were leaf appearance and elongation rates, phyllochron, stem elongation rate, final leaf length, number of live leaves per tiller, leaf life span and tiller appearance, death and survival rates. There was difference between cultivars for these variables, indicating a large variability within plants. Considering the morphogenetic and structural variables of leaves and tillers, B. brizantha had a similar pattern of variation to those of P. maximum, and B. Decumbens, similar to those of B. humidicola. Tiller appearance was large at the onset of the experiment and second and third generations comprised the large majority of tiller population for the cultivars Mombaça, Tanzânia, Xaraés and Capiporã. Group analysis based on plant morphogenetic and structural characteristics of leaves and tillers was an interesting way of grouping cultivars, indicating the importance and the potential of using morphogenesis in plant selection and evaluation programmes. O estudo das características morfogênicas permite compreender aspectos relativos à forma e função das plantas forrageiras além de possibilitar identificar plantas com potenciais produtivos e exigências de manejo diferentes. O objetivo deste trabalho foi avaliar, comparativamente, dez plantas forrageiras tropicais por meio de variáveis morfogênicas e estruturais. Os tratamentos corresponderam a cultivares pertencentes ao gênero Panicum (P. maximum cvs. Tanzânia e Mombaça) e ao gênero Brachiaria (B. brizantha cvs. Piatã, Marandu, Xaraés, Capiporã, e Arapoty; B. decumbens cv. Basilisk; B. humidicola cvs. Comum e Tupi), avaliados sob condições de crescimento livre. Foram avaliadas a taxa de aparecimento e alongamento de folhas, filocrono, taxa de alongamento de colmos, comprimento final da lâmina foliar, número de folhas vivas por perfilho, duração de vida das folhas e padrão demográfico de perfilhamento. Houve diferença entre cultivares para as variáveis, indicando grande variabilidade no material estudado. Considerando as características morfogênicas e estruturais de folhas e perfilhos, as B. brizantha apresentaram comportamento parecido com os P. maximum, e B. decumbens mais próximo das B. humidicola. Verificou-se que o aparecimento de perfilhos foi inicialmente elevado e que a segunda e, ou, terceira gerações contribuíram de forma significativa para o número total de perfilhos dos cultivares Mombaça, Tanzânia, Xaraés e Capiporã. A análise de agrupamento baseada nas características morfogênicas e estruturais de folhas e perfilhos foi um método interessante para agrupar cultivares, demonstrando a importância e o potencial de uso da morfogênese em trabalhos de seleção e avaliação de plantas forrageiras. Universidade de São Paulo. Escola Superior de Agricultura Luiz de Queiroz2010-04-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttps://www.revistas.usp.br/sa/article/view/2255910.1590/S0103-90162010000200002Scientia Agricola; v. 67 n. 2 (2010); 136-142Scientia Agricola; Vol. 67 No. 2 (2010); 136-142Scientia Agricola; Vol. 67 Núm. 2 (2010); 136-1421678-992X0103-9016reponame:Scientia Agrícola (Online)instname:Universidade de São Paulo (USP)instacron:USPenghttps://www.revistas.usp.br/sa/article/view/22559/24583Copyright (c) 2015 Scientia Agricolainfo:eu-repo/semantics/openAccessSilveira, Márcia Cristina Teixeira daNascimento Júnior, Domicio doSilva, Sila Carneiro daEuclides, Valéria Pacheco BatistaMontagner, Denise BataglinSbrissia, André FischerRodrigues, Carlindo SantosSousa, Bráulio Maia de LanaPena, Karine da SilvaVilela, Hélio Henrique2015-07-07T18:51:07Zoai:revistas.usp.br:article/22559Revistahttp://revistas.usp.br/sa/indexPUBhttps://old.scielo.br/oai/scielo-oai.phpscientia@usp.br||alleoni@usp.br1678-992X0103-9016opendoar:2015-07-07T18:51:07Scientia Agrícola (Online) - Universidade de São Paulo (USP)false |
dc.title.none.fl_str_mv |
Morphogenetic and structural comparative characterization of tropical forage grass cultivars under free growth Caracterização morfogênica e estrutural comparativa de cultivares de gramíneas forrageiras tropicais sob crescimento livre |
title |
Morphogenetic and structural comparative characterization of tropical forage grass cultivars under free growth |
spellingShingle |
Morphogenetic and structural comparative characterization of tropical forage grass cultivars under free growth Silveira, Márcia Cristina Teixeira da Brachiaria Panicum variáveis morfogênicas e estruturais Brachiaria Panicum morphogenetic and structural variables |
title_short |
Morphogenetic and structural comparative characterization of tropical forage grass cultivars under free growth |
title_full |
Morphogenetic and structural comparative characterization of tropical forage grass cultivars under free growth |
title_fullStr |
Morphogenetic and structural comparative characterization of tropical forage grass cultivars under free growth |
title_full_unstemmed |
Morphogenetic and structural comparative characterization of tropical forage grass cultivars under free growth |
title_sort |
Morphogenetic and structural comparative characterization of tropical forage grass cultivars under free growth |
author |
Silveira, Márcia Cristina Teixeira da |
author_facet |
Silveira, Márcia Cristina Teixeira da Nascimento Júnior, Domicio do Silva, Sila Carneiro da Euclides, Valéria Pacheco Batista Montagner, Denise Bataglin Sbrissia, André Fischer Rodrigues, Carlindo Santos Sousa, Bráulio Maia de Lana Pena, Karine da Silva Vilela, Hélio Henrique |
author_role |
author |
author2 |
Nascimento Júnior, Domicio do Silva, Sila Carneiro da Euclides, Valéria Pacheco Batista Montagner, Denise Bataglin Sbrissia, André Fischer Rodrigues, Carlindo Santos Sousa, Bráulio Maia de Lana Pena, Karine da Silva Vilela, Hélio Henrique |
author2_role |
author author author author author author author author author |
dc.contributor.author.fl_str_mv |
Silveira, Márcia Cristina Teixeira da Nascimento Júnior, Domicio do Silva, Sila Carneiro da Euclides, Valéria Pacheco Batista Montagner, Denise Bataglin Sbrissia, André Fischer Rodrigues, Carlindo Santos Sousa, Bráulio Maia de Lana Pena, Karine da Silva Vilela, Hélio Henrique |
dc.subject.por.fl_str_mv |
Brachiaria Panicum variáveis morfogênicas e estruturais Brachiaria Panicum morphogenetic and structural variables |
topic |
Brachiaria Panicum variáveis morfogênicas e estruturais Brachiaria Panicum morphogenetic and structural variables |
description |
Understanding of the morphogenetic characteristics allows comprehension of aspects related to the form and function of forage plants, providing opportunities to identify potentially high productive plants and distinct defoliation management requirements. The objective of this experiment was to carry out a comparative study of ten tropical forage grasses using morphogenetic and structural variables. Treatments corresponded to grasses of the Panicum genus (P. maximum cultivars Tanzânia and Mombaça) and the Brachiaria genus (B. brizantha cultivars Piatã, Marandu, Xaraés, Capiporã and Arapoty; B. decumbens cultivar Basilisk; B. humidicola cultivars Comum and Tupi), evaluated under free growth conditions.. Response variables were leaf appearance and elongation rates, phyllochron, stem elongation rate, final leaf length, number of live leaves per tiller, leaf life span and tiller appearance, death and survival rates. There was difference between cultivars for these variables, indicating a large variability within plants. Considering the morphogenetic and structural variables of leaves and tillers, B. brizantha had a similar pattern of variation to those of P. maximum, and B. Decumbens, similar to those of B. humidicola. Tiller appearance was large at the onset of the experiment and second and third generations comprised the large majority of tiller population for the cultivars Mombaça, Tanzânia, Xaraés and Capiporã. Group analysis based on plant morphogenetic and structural characteristics of leaves and tillers was an interesting way of grouping cultivars, indicating the importance and the potential of using morphogenesis in plant selection and evaluation programmes. |
publishDate |
2010 |
dc.date.none.fl_str_mv |
2010-04-01 |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
https://www.revistas.usp.br/sa/article/view/22559 10.1590/S0103-90162010000200002 |
url |
https://www.revistas.usp.br/sa/article/view/22559 |
identifier_str_mv |
10.1590/S0103-90162010000200002 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
https://www.revistas.usp.br/sa/article/view/22559/24583 |
dc.rights.driver.fl_str_mv |
Copyright (c) 2015 Scientia Agricola info:eu-repo/semantics/openAccess |
rights_invalid_str_mv |
Copyright (c) 2015 Scientia Agricola |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
application/pdf |
dc.publisher.none.fl_str_mv |
Universidade de São Paulo. Escola Superior de Agricultura Luiz de Queiroz |
publisher.none.fl_str_mv |
Universidade de São Paulo. Escola Superior de Agricultura Luiz de Queiroz |
dc.source.none.fl_str_mv |
Scientia Agricola; v. 67 n. 2 (2010); 136-142 Scientia Agricola; Vol. 67 No. 2 (2010); 136-142 Scientia Agricola; Vol. 67 Núm. 2 (2010); 136-142 1678-992X 0103-9016 reponame:Scientia Agrícola (Online) instname:Universidade de São Paulo (USP) instacron:USP |
instname_str |
Universidade de São Paulo (USP) |
instacron_str |
USP |
institution |
USP |
reponame_str |
Scientia Agrícola (Online) |
collection |
Scientia Agrícola (Online) |
repository.name.fl_str_mv |
Scientia Agrícola (Online) - Universidade de São Paulo (USP) |
repository.mail.fl_str_mv |
scientia@usp.br||alleoni@usp.br |
_version_ |
1787713258020405248 |