Dissimilarity between Andropogon lateralis ecotypes under different defoliation frequencies and heights
Autor(a) principal: | |
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Data de Publicação: | 2022 |
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=S0103-84782022000300653 |
Resumo: | ABSTRACT: Andropogon lateralis Nees is a native grass of southern Brazil and is one of the most frequent specie found in native grasslands. The species is widely distributed and has a high degree of phenotypic plasticity, which makes it highly adaptable to different edaphoclimatic conditions and management. This study aimed to evaluate the behavior of twelve ecotypes of A. lateralis, collected in different regions of the state of Rio Grande do Sul and cut to three different heights and subjected to two different defoliation frequencies. From September to February, the ecotypes were evaluated for total dry matter, leaf and stem yields. In addition, total, vegetative and reproductive tillers and plant height were measured. These characteristics are important for the selection of superior genotypes in terms of genetic variability and forage production. Total dry matter and leaf dry matter are characteristics with agronomic importance and they showed the highest correlation (r = 0.77), enabling an indirect selection for one of these characteristics. The natural selection of plants resulted in distinct structural, morphological and productive characteristics with heterogeneity that allows the selection and grouping according to the characteristics, ecotypes with superior agronomic characteristics can be included in breeding programs. |
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Dissimilarity between Andropogon lateralis ecotypes under different defoliation frequencies and heightsagronomic characteristicscorrelationcut managementnative grassABSTRACT: Andropogon lateralis Nees is a native grass of southern Brazil and is one of the most frequent specie found in native grasslands. The species is widely distributed and has a high degree of phenotypic plasticity, which makes it highly adaptable to different edaphoclimatic conditions and management. This study aimed to evaluate the behavior of twelve ecotypes of A. lateralis, collected in different regions of the state of Rio Grande do Sul and cut to three different heights and subjected to two different defoliation frequencies. From September to February, the ecotypes were evaluated for total dry matter, leaf and stem yields. In addition, total, vegetative and reproductive tillers and plant height were measured. These characteristics are important for the selection of superior genotypes in terms of genetic variability and forage production. Total dry matter and leaf dry matter are characteristics with agronomic importance and they showed the highest correlation (r = 0.77), enabling an indirect selection for one of these characteristics. The natural selection of plants resulted in distinct structural, morphological and productive characteristics with heterogeneity that allows the selection and grouping according to the characteristics, ecotypes with superior agronomic characteristics can be included in breeding programs.Universidade Federal de Santa Maria2022-01-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782022000300653Ciência Rural v.52 n.3 2022reponame:Ciência Ruralinstname:Universidade Federal de Santa Maria (UFSM)instacron:UFSM10.1590/0103-8478cr20201079info:eu-repo/semantics/openAccessBarros,ThiagoWeiler,Roberto LuisMachado,Juliana MedianeiraSilveira,Diógenes CecchinBrunes,André PichMills,AnnamariaSimioni,CarineDall’Agnol,Migueleng2021-09-10T00:00:00ZRevista |
dc.title.none.fl_str_mv |
Dissimilarity between Andropogon lateralis ecotypes under different defoliation frequencies and heights |
title |
Dissimilarity between Andropogon lateralis ecotypes under different defoliation frequencies and heights |
spellingShingle |
Dissimilarity between Andropogon lateralis ecotypes under different defoliation frequencies and heights Barros,Thiago agronomic characteristics correlation cut management native grass |
title_short |
Dissimilarity between Andropogon lateralis ecotypes under different defoliation frequencies and heights |
title_full |
Dissimilarity between Andropogon lateralis ecotypes under different defoliation frequencies and heights |
title_fullStr |
Dissimilarity between Andropogon lateralis ecotypes under different defoliation frequencies and heights |
title_full_unstemmed |
Dissimilarity between Andropogon lateralis ecotypes under different defoliation frequencies and heights |
title_sort |
Dissimilarity between Andropogon lateralis ecotypes under different defoliation frequencies and heights |
author |
Barros,Thiago |
author_facet |
Barros,Thiago Weiler,Roberto Luis Machado,Juliana Medianeira Silveira,Diógenes Cecchin Brunes,André Pich Mills,Annamaria Simioni,Carine Dall’Agnol,Miguel |
author_role |
author |
author2 |
Weiler,Roberto Luis Machado,Juliana Medianeira Silveira,Diógenes Cecchin Brunes,André Pich Mills,Annamaria Simioni,Carine Dall’Agnol,Miguel |
author2_role |
author author author author author author author |
dc.contributor.author.fl_str_mv |
Barros,Thiago Weiler,Roberto Luis Machado,Juliana Medianeira Silveira,Diógenes Cecchin Brunes,André Pich Mills,Annamaria Simioni,Carine Dall’Agnol,Miguel |
dc.subject.por.fl_str_mv |
agronomic characteristics correlation cut management native grass |
topic |
agronomic characteristics correlation cut management native grass |
description |
ABSTRACT: Andropogon lateralis Nees is a native grass of southern Brazil and is one of the most frequent specie found in native grasslands. The species is widely distributed and has a high degree of phenotypic plasticity, which makes it highly adaptable to different edaphoclimatic conditions and management. This study aimed to evaluate the behavior of twelve ecotypes of A. lateralis, collected in different regions of the state of Rio Grande do Sul and cut to three different heights and subjected to two different defoliation frequencies. From September to February, the ecotypes were evaluated for total dry matter, leaf and stem yields. In addition, total, vegetative and reproductive tillers and plant height were measured. These characteristics are important for the selection of superior genotypes in terms of genetic variability and forage production. Total dry matter and leaf dry matter are characteristics with agronomic importance and they showed the highest correlation (r = 0.77), enabling an indirect selection for one of these characteristics. The natural selection of plants resulted in distinct structural, morphological and productive characteristics with heterogeneity that allows the selection and grouping according to the characteristics, ecotypes with superior agronomic characteristics can be included in breeding programs. |
publishDate |
2022 |
dc.date.none.fl_str_mv |
2022-01-01 |
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=S0103-84782022000300653 |
url |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782022000300653 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
10.1590/0103-8478cr20201079 |
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.52 n.3 2022 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_ |
1749140556588515328 |