Morphological and chemical characteristics of onion plants (Allium cepa L.) associated with resistance to onion thrips

Detalhes bibliográficos
Autor(a) principal: Silva, Vitor Cezar Pacheco da
Data de Publicação: 2014
Outros Autores: Bettoni, Marcelle Michelotti, Bona, Cleusa, Foerster, Luís Amilton
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Acta Scientiarum. Agronomy (Online)
Texto Completo: http://www.periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/17436
Resumo: Thrips tabaci Lindeman is the main pest of onion crops, and chemical control is the main method adopted by farmers. Alternative control methods should be prioritised to reduce the amount of insecticides used. Resistant cultivars are one efficient way to control thrips in the field. Our aim was to assess the influence of morphological and chemical characteristics of seven onion cultivars and their resistance to T. tabaci. The number of thrips and the morphological and chemical characteristics of the plants were assessed. Among the evaluated cultivars, Alfa São Francisco RT, BR 29 and Sirius showed resistance to T. tabaci, as indicated by the lower number of thrips observed during the cycle (64, 87, and 74 thrips, respectively). Morphological and chemical characteristics were associated with onion’s resistance to T. tabaci. For the cultivar Alfa São Francisco RT, a wider central angle (16.4°), a thinner cuticle, a larger amount of epicuticular waxes, and stomata on the surface of leaves accounted for resistance. For the cultivars BR 29 and Sirius, the resistance was likely due to the presence of resistance-conferring substances or high amounts of some component in the chemical composition of plants. 
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spelling Morphological and chemical characteristics of onion plants (Allium cepa L.) associated with resistance to onion thripsThrips tabaciThysanopteraThripidaeonionplant resistance to insectsEntomologia AgrícolaThrips tabaci Lindeman is the main pest of onion crops, and chemical control is the main method adopted by farmers. Alternative control methods should be prioritised to reduce the amount of insecticides used. Resistant cultivars are one efficient way to control thrips in the field. Our aim was to assess the influence of morphological and chemical characteristics of seven onion cultivars and their resistance to T. tabaci. The number of thrips and the morphological and chemical characteristics of the plants were assessed. Among the evaluated cultivars, Alfa São Francisco RT, BR 29 and Sirius showed resistance to T. tabaci, as indicated by the lower number of thrips observed during the cycle (64, 87, and 74 thrips, respectively). Morphological and chemical characteristics were associated with onion’s resistance to T. tabaci. For the cultivar Alfa São Francisco RT, a wider central angle (16.4°), a thinner cuticle, a larger amount of epicuticular waxes, and stomata on the surface of leaves accounted for resistance. For the cultivars BR 29 and Sirius, the resistance was likely due to the presence of resistance-conferring substances or high amounts of some component in the chemical composition of plants. Universidade Estadual de Maringá2014-11-25info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttp://www.periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/1743610.4025/actasciagron.v37i1.17436Acta Scientiarum. Agronomy; Vol 37 No 1 (2015); 85-92Acta Scientiarum. Agronomy; v. 37 n. 1 (2015); 85-921807-86211679-9275reponame:Acta Scientiarum. Agronomy (Online)instname:Universidade Estadual de Maringá (UEM)instacron:UEMenghttp://www.periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/17436/pdf_56Silva, Vitor Cezar Pacheco daBettoni, Marcelle MichelottiBona, CleusaFoerster, Luís Amiltoninfo:eu-repo/semantics/openAccess2015-01-15T15:03:22Zoai:periodicos.uem.br/ojs:article/17436Revistahttp://www.periodicos.uem.br/ojs/index.php/ActaSciAgronPUBhttp://www.periodicos.uem.br/ojs/index.php/ActaSciAgron/oaiactaagron@uem.br||actaagron@uem.br|| edamasio@uem.br1807-86211679-9275opendoar:2015-01-15T15:03:22Acta Scientiarum. Agronomy (Online) - Universidade Estadual de Maringá (UEM)false
dc.title.none.fl_str_mv Morphological and chemical characteristics of onion plants (Allium cepa L.) associated with resistance to onion thrips
title Morphological and chemical characteristics of onion plants (Allium cepa L.) associated with resistance to onion thrips
spellingShingle Morphological and chemical characteristics of onion plants (Allium cepa L.) associated with resistance to onion thrips
Silva, Vitor Cezar Pacheco da
Thrips tabaci
Thysanoptera
Thripidae
onion
plant resistance to insects
Entomologia Agrícola
title_short Morphological and chemical characteristics of onion plants (Allium cepa L.) associated with resistance to onion thrips
title_full Morphological and chemical characteristics of onion plants (Allium cepa L.) associated with resistance to onion thrips
title_fullStr Morphological and chemical characteristics of onion plants (Allium cepa L.) associated with resistance to onion thrips
title_full_unstemmed Morphological and chemical characteristics of onion plants (Allium cepa L.) associated with resistance to onion thrips
title_sort Morphological and chemical characteristics of onion plants (Allium cepa L.) associated with resistance to onion thrips
author Silva, Vitor Cezar Pacheco da
author_facet Silva, Vitor Cezar Pacheco da
Bettoni, Marcelle Michelotti
Bona, Cleusa
Foerster, Luís Amilton
author_role author
author2 Bettoni, Marcelle Michelotti
Bona, Cleusa
Foerster, Luís Amilton
author2_role author
author
author
dc.contributor.author.fl_str_mv Silva, Vitor Cezar Pacheco da
Bettoni, Marcelle Michelotti
Bona, Cleusa
Foerster, Luís Amilton
dc.subject.por.fl_str_mv Thrips tabaci
Thysanoptera
Thripidae
onion
plant resistance to insects
Entomologia Agrícola
topic Thrips tabaci
Thysanoptera
Thripidae
onion
plant resistance to insects
Entomologia Agrícola
description Thrips tabaci Lindeman is the main pest of onion crops, and chemical control is the main method adopted by farmers. Alternative control methods should be prioritised to reduce the amount of insecticides used. Resistant cultivars are one efficient way to control thrips in the field. Our aim was to assess the influence of morphological and chemical characteristics of seven onion cultivars and their resistance to T. tabaci. The number of thrips and the morphological and chemical characteristics of the plants were assessed. Among the evaluated cultivars, Alfa São Francisco RT, BR 29 and Sirius showed resistance to T. tabaci, as indicated by the lower number of thrips observed during the cycle (64, 87, and 74 thrips, respectively). Morphological and chemical characteristics were associated with onion’s resistance to T. tabaci. For the cultivar Alfa São Francisco RT, a wider central angle (16.4°), a thinner cuticle, a larger amount of epicuticular waxes, and stomata on the surface of leaves accounted for resistance. For the cultivars BR 29 and Sirius, the resistance was likely due to the presence of resistance-conferring substances or high amounts of some component in the chemical composition of plants. 
publishDate 2014
dc.date.none.fl_str_mv 2014-11-25
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 http://www.periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/17436
10.4025/actasciagron.v37i1.17436
url http://www.periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/17436
identifier_str_mv 10.4025/actasciagron.v37i1.17436
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv http://www.periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/17436/pdf_56
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Universidade Estadual de Maringá
publisher.none.fl_str_mv Universidade Estadual de Maringá
dc.source.none.fl_str_mv Acta Scientiarum. Agronomy; Vol 37 No 1 (2015); 85-92
Acta Scientiarum. Agronomy; v. 37 n. 1 (2015); 85-92
1807-8621
1679-9275
reponame:Acta Scientiarum. Agronomy (Online)
instname:Universidade Estadual de Maringá (UEM)
instacron:UEM
instname_str Universidade Estadual de Maringá (UEM)
instacron_str UEM
institution UEM
reponame_str Acta Scientiarum. Agronomy (Online)
collection Acta Scientiarum. Agronomy (Online)
repository.name.fl_str_mv Acta Scientiarum. Agronomy (Online) - Universidade Estadual de Maringá (UEM)
repository.mail.fl_str_mv actaagron@uem.br||actaagron@uem.br|| edamasio@uem.br
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