Relationship between the morphogenesis of Italian ryegrass cv. 'BRS Ponteio' with forage and seed production
Autor(a) principal: | |
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Data de Publicação: | 2016 |
Outros Autores: | , , , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Ciência Rural |
Texto Completo: | http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782016000100053 |
Resumo: | This study aims to verify, accurate and precisely, the responses of Italian ryegrass 'BRS Ponteio' cultivar to different frequencies of defoliation for forage production and especially for seed production. For this purpose, a randomized block design experiment with four replications was conducted. Four frequencies of defoliation were applied (zero, one, two, and three) based on the thermal sum, evaluating the rate of leaf appearance (LAR), phyllochron (P), leaf expansion rate (LER), leaf senescence rate (LSR), stems expansion rate (SER), tillering rate (TR), leaf life span (LL), forage production, proportion of leaf blades, stems plus sheaths, senescent material, and inflorescences, as well as seed production. Second defoliation noticeably altered the morphogenic plant responses, reduced expansion rates and leaf appearance, increased rates of tillering and stems expansion. This phenotypic maintained a high seed production and provided a harvest of forage mass 100% higher than the collected mass in the first cutting. Third defoliation led to an increase of 100% of the harvested forage mass; however, it caused drastic and negative changes in the morphogenic characteristics and seed yielding. |
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Relationship between the morphogenesis of Italian ryegrass cv. 'BRS Ponteio' with forage and seed productionLolium multiflorum Lam.defoliation frequencyleaf expansion rateleaf senescence ratephenotypicThis study aims to verify, accurate and precisely, the responses of Italian ryegrass 'BRS Ponteio' cultivar to different frequencies of defoliation for forage production and especially for seed production. For this purpose, a randomized block design experiment with four replications was conducted. Four frequencies of defoliation were applied (zero, one, two, and three) based on the thermal sum, evaluating the rate of leaf appearance (LAR), phyllochron (P), leaf expansion rate (LER), leaf senescence rate (LSR), stems expansion rate (SER), tillering rate (TR), leaf life span (LL), forage production, proportion of leaf blades, stems plus sheaths, senescent material, and inflorescences, as well as seed production. Second defoliation noticeably altered the morphogenic plant responses, reduced expansion rates and leaf appearance, increased rates of tillering and stems expansion. This phenotypic maintained a high seed production and provided a harvest of forage mass 100% higher than the collected mass in the first cutting. Third defoliation led to an increase of 100% of the harvested forage mass; however, it caused drastic and negative changes in the morphogenic characteristics and seed yielding.Universidade Federal de Santa Maria2016-01-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782016000100053Ciência Rural v.46 n.1 2016reponame:Ciência Ruralinstname:Universidade Federal de Santa Maria (UFSM)instacron:UFSM10.1590/0103-8478cr20150296info:eu-repo/semantics/openAccessCunha,Ricardo Pereira daPedroso,Carlos Eduardo da SilvaMittelmann,AndréaOliveira,Roberto Caetano deBohn,AlbertoSilva,Jéssica Dias Gomes daMaia,Manoel de Souzaeng2016-01-20T00:00:00ZRevista |
dc.title.none.fl_str_mv |
Relationship between the morphogenesis of Italian ryegrass cv. 'BRS Ponteio' with forage and seed production |
title |
Relationship between the morphogenesis of Italian ryegrass cv. 'BRS Ponteio' with forage and seed production |
spellingShingle |
Relationship between the morphogenesis of Italian ryegrass cv. 'BRS Ponteio' with forage and seed production Cunha,Ricardo Pereira da Lolium multiflorum Lam. defoliation frequency leaf expansion rate leaf senescence rate phenotypic |
title_short |
Relationship between the morphogenesis of Italian ryegrass cv. 'BRS Ponteio' with forage and seed production |
title_full |
Relationship between the morphogenesis of Italian ryegrass cv. 'BRS Ponteio' with forage and seed production |
title_fullStr |
Relationship between the morphogenesis of Italian ryegrass cv. 'BRS Ponteio' with forage and seed production |
title_full_unstemmed |
Relationship between the morphogenesis of Italian ryegrass cv. 'BRS Ponteio' with forage and seed production |
title_sort |
Relationship between the morphogenesis of Italian ryegrass cv. 'BRS Ponteio' with forage and seed production |
author |
Cunha,Ricardo Pereira da |
author_facet |
Cunha,Ricardo Pereira da Pedroso,Carlos Eduardo da Silva Mittelmann,Andréa Oliveira,Roberto Caetano de Bohn,Alberto Silva,Jéssica Dias Gomes da Maia,Manoel de Souza |
author_role |
author |
author2 |
Pedroso,Carlos Eduardo da Silva Mittelmann,Andréa Oliveira,Roberto Caetano de Bohn,Alberto Silva,Jéssica Dias Gomes da Maia,Manoel de Souza |
author2_role |
author author author author author author |
dc.contributor.author.fl_str_mv |
Cunha,Ricardo Pereira da Pedroso,Carlos Eduardo da Silva Mittelmann,Andréa Oliveira,Roberto Caetano de Bohn,Alberto Silva,Jéssica Dias Gomes da Maia,Manoel de Souza |
dc.subject.por.fl_str_mv |
Lolium multiflorum Lam. defoliation frequency leaf expansion rate leaf senescence rate phenotypic |
topic |
Lolium multiflorum Lam. defoliation frequency leaf expansion rate leaf senescence rate phenotypic |
description |
This study aims to verify, accurate and precisely, the responses of Italian ryegrass 'BRS Ponteio' cultivar to different frequencies of defoliation for forage production and especially for seed production. For this purpose, a randomized block design experiment with four replications was conducted. Four frequencies of defoliation were applied (zero, one, two, and three) based on the thermal sum, evaluating the rate of leaf appearance (LAR), phyllochron (P), leaf expansion rate (LER), leaf senescence rate (LSR), stems expansion rate (SER), tillering rate (TR), leaf life span (LL), forage production, proportion of leaf blades, stems plus sheaths, senescent material, and inflorescences, as well as seed production. Second defoliation noticeably altered the morphogenic plant responses, reduced expansion rates and leaf appearance, increased rates of tillering and stems expansion. This phenotypic maintained a high seed production and provided a harvest of forage mass 100% higher than the collected mass in the first cutting. Third defoliation led to an increase of 100% of the harvested forage mass; however, it caused drastic and negative changes in the morphogenic characteristics and seed yielding. |
publishDate |
2016 |
dc.date.none.fl_str_mv |
2016-01-01 |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782016000100053 |
url |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782016000100053 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
10.1590/0103-8478cr20150296 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
text/html |
dc.publisher.none.fl_str_mv |
Universidade Federal de Santa Maria |
publisher.none.fl_str_mv |
Universidade Federal de Santa Maria |
dc.source.none.fl_str_mv |
Ciência Rural v.46 n.1 2016 reponame:Ciência Rural instname:Universidade Federal de Santa Maria (UFSM) instacron:UFSM |
instname_str |
Universidade Federal de Santa Maria (UFSM) |
instacron_str |
UFSM |
institution |
UFSM |
reponame_str |
Ciência Rural |
collection |
Ciência Rural |
repository.name.fl_str_mv |
|
repository.mail.fl_str_mv |
|
_version_ |
1749140548567957504 |