Yield loss in sunflower cultivars due to bird attack

Detalhes bibliográficos
Autor(a) principal: Silva,Paulo Sérgio Lima e
Data de Publicação: 2019
Outros Autores: Tomaz,Francisco Linco de Souza, Siqueira,Patrícia Liany de Oliveira Fernandes, Silva,Paulo Igor Barbosa e, Lima,Levi Afonso Cavalcante de
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Revista ciência agronômica (Online)
Texto Completo: http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1806-66902019000100114
Resumo: ABSTRACT Bird attacks on the sunflower may hinder its exploitation in the Brazilian semi-arid region. The aim of this study was to evaluate the effects of different levels of protection (0, 33, 66 and 100%) of the capitula of eight sunflower cultivars, evaluated in randomized blocks with sub-divided plots and four replications. The cultivars were allocated in the plots and the levels of protection in the sub-plots, by covering the capitula with caps of non-woven fabric after physiological maturity. The most frequent bird species was the Paroaria dominicana. The Aguará 06 cultivar was the most productive and most tolerant to bird attack, followed by the Helio 250, CF 101 and Charrua cultivars. There was a positive correlation between yield loss (YL) due to birds and the flowering period, YL and the period for physiological maturity, YL and capitulum diameter, YL and stem diameter, YL and plant height, YL and the angle of the capitulum with the stem, and between YL and the distance of the capitulum from the ground. A negative correlation and the absence of correlation were seen between YL and the number of leaves, and between YL and distance of the capitulum to the stem respectively. The effects of protecting the capitula were similar for grain yield in the cultivars under test. Use of the caps was efficient, since an increase in the proportion of protected capitula determined an increase in grain yield, number of grains per capitulum and 1000-grain weight. These increases continued up to a certain proportion, after which there was a decrease in the three characteristics.
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spelling Yield loss in sunflower cultivars due to bird attackHelianthus annuusParoaria dominicanaProtection of capitulaPhenotypic correlationGenetic improvementABSTRACT Bird attacks on the sunflower may hinder its exploitation in the Brazilian semi-arid region. The aim of this study was to evaluate the effects of different levels of protection (0, 33, 66 and 100%) of the capitula of eight sunflower cultivars, evaluated in randomized blocks with sub-divided plots and four replications. The cultivars were allocated in the plots and the levels of protection in the sub-plots, by covering the capitula with caps of non-woven fabric after physiological maturity. The most frequent bird species was the Paroaria dominicana. The Aguará 06 cultivar was the most productive and most tolerant to bird attack, followed by the Helio 250, CF 101 and Charrua cultivars. There was a positive correlation between yield loss (YL) due to birds and the flowering period, YL and the period for physiological maturity, YL and capitulum diameter, YL and stem diameter, YL and plant height, YL and the angle of the capitulum with the stem, and between YL and the distance of the capitulum from the ground. A negative correlation and the absence of correlation were seen between YL and the number of leaves, and between YL and distance of the capitulum to the stem respectively. The effects of protecting the capitula were similar for grain yield in the cultivars under test. Use of the caps was efficient, since an increase in the proportion of protected capitula determined an increase in grain yield, number of grains per capitulum and 1000-grain weight. These increases continued up to a certain proportion, after which there was a decrease in the three characteristics.Universidade Federal do Ceará2019-03-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S1806-66902019000100114Revista Ciência Agronômica v.50 n.1 2019reponame:Revista ciência agronômica (Online)instname:Universidade Federal do Ceará (UFC)instacron:UFC10.5935/1806-6690.20190014info:eu-repo/semantics/openAccessSilva,Paulo Sérgio Lima eTomaz,Francisco Linco de SouzaSiqueira,Patrícia Liany de Oliveira FernandesSilva,Paulo Igor Barbosa eLima,Levi Afonso Cavalcante deeng2018-11-07T00:00:00Zoai:scielo:S1806-66902019000100114Revistahttp://www.ccarevista.ufc.br/PUBhttps://old.scielo.br/oai/scielo-oai.php||alekdutra@ufc.br|| ccarev@ufc.br1806-66900045-6888opendoar:2018-11-07T00:00Revista ciência agronômica (Online) - Universidade Federal do Ceará (UFC)false
dc.title.none.fl_str_mv Yield loss in sunflower cultivars due to bird attack
title Yield loss in sunflower cultivars due to bird attack
spellingShingle Yield loss in sunflower cultivars due to bird attack
Silva,Paulo Sérgio Lima e
Helianthus annuus
Paroaria dominicana
Protection of capitula
Phenotypic correlation
Genetic improvement
title_short Yield loss in sunflower cultivars due to bird attack
title_full Yield loss in sunflower cultivars due to bird attack
title_fullStr Yield loss in sunflower cultivars due to bird attack
title_full_unstemmed Yield loss in sunflower cultivars due to bird attack
title_sort Yield loss in sunflower cultivars due to bird attack
author Silva,Paulo Sérgio Lima e
author_facet Silva,Paulo Sérgio Lima e
Tomaz,Francisco Linco de Souza
Siqueira,Patrícia Liany de Oliveira Fernandes
Silva,Paulo Igor Barbosa e
Lima,Levi Afonso Cavalcante de
author_role author
author2 Tomaz,Francisco Linco de Souza
Siqueira,Patrícia Liany de Oliveira Fernandes
Silva,Paulo Igor Barbosa e
Lima,Levi Afonso Cavalcante de
author2_role author
author
author
author
dc.contributor.author.fl_str_mv Silva,Paulo Sérgio Lima e
Tomaz,Francisco Linco de Souza
Siqueira,Patrícia Liany de Oliveira Fernandes
Silva,Paulo Igor Barbosa e
Lima,Levi Afonso Cavalcante de
dc.subject.por.fl_str_mv Helianthus annuus
Paroaria dominicana
Protection of capitula
Phenotypic correlation
Genetic improvement
topic Helianthus annuus
Paroaria dominicana
Protection of capitula
Phenotypic correlation
Genetic improvement
description ABSTRACT Bird attacks on the sunflower may hinder its exploitation in the Brazilian semi-arid region. The aim of this study was to evaluate the effects of different levels of protection (0, 33, 66 and 100%) of the capitula of eight sunflower cultivars, evaluated in randomized blocks with sub-divided plots and four replications. The cultivars were allocated in the plots and the levels of protection in the sub-plots, by covering the capitula with caps of non-woven fabric after physiological maturity. The most frequent bird species was the Paroaria dominicana. The Aguará 06 cultivar was the most productive and most tolerant to bird attack, followed by the Helio 250, CF 101 and Charrua cultivars. There was a positive correlation between yield loss (YL) due to birds and the flowering period, YL and the period for physiological maturity, YL and capitulum diameter, YL and stem diameter, YL and plant height, YL and the angle of the capitulum with the stem, and between YL and the distance of the capitulum from the ground. A negative correlation and the absence of correlation were seen between YL and the number of leaves, and between YL and distance of the capitulum to the stem respectively. The effects of protecting the capitula were similar for grain yield in the cultivars under test. Use of the caps was efficient, since an increase in the proportion of protected capitula determined an increase in grain yield, number of grains per capitulum and 1000-grain weight. These increases continued up to a certain proportion, after which there was a decrease in the three characteristics.
publishDate 2019
dc.date.none.fl_str_mv 2019-03-01
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=S1806-66902019000100114
url http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1806-66902019000100114
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv 10.5935/1806-6690.20190014
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 do Ceará
publisher.none.fl_str_mv Universidade Federal do Ceará
dc.source.none.fl_str_mv Revista Ciência Agronômica v.50 n.1 2019
reponame:Revista ciência agronômica (Online)
instname:Universidade Federal do Ceará (UFC)
instacron:UFC
instname_str Universidade Federal do Ceará (UFC)
instacron_str UFC
institution UFC
reponame_str Revista ciência agronômica (Online)
collection Revista ciência agronômica (Online)
repository.name.fl_str_mv Revista ciência agronômica (Online) - Universidade Federal do Ceará (UFC)
repository.mail.fl_str_mv ||alekdutra@ufc.br|| ccarev@ufc.br
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