Weevil resistance mechanisms in corn kernels
Autor(a) principal: | |
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Data de Publicação: | 2014 |
Outros Autores: | |
Tipo de documento: | Artigo |
Idioma: | por |
Título da fonte: | Pesquisa Agropecuária Brasileira (Online) |
Texto Completo: | https://seer.sct.embrapa.br/index.php/pab/article/view/15423 |
Resumo: | The built in maize weevil resistance in corn kernels is important because it gives protection to the threshed and unthreshed stored corn. Through a study conducted in this area it was possible to identify some resistant (R-Corn) and susceptible (S-Corn) com genotypes. Using these types of corn, two experiments were conducted to look for evidence of the resistance mechanisms involved in the maize weevil/corn grain relationship. Based on the results obtained from these experiments the following observations could be made: a) when the R-Corn and the S-Corn were offered simultaneously, the S-Corn attracted 14 times more weevils than the R-Corn; b) when only the R-Corn was offered, in seven days, a high weevil mortality occurred; c) the reproductive potential decreased in the weevils reared in the R-Corn in relation to those reared in the S-Corn; d) the source of food during the adult stage contributed more for the reproductive potential than during the developmental period; e) finally, one can conclude that the resistance in corn grain to maize weevil results from a joint effect of "antibiosis" and "antixenosis". |
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Weevil resistance mechanisms in corn kernelsMecanismos de resistência do grão de milho ao gorgulhoSitophilus zeamais; antibiosis; antixenosisSitophilus zeamais; antibiose; antixenoseThe built in maize weevil resistance in corn kernels is important because it gives protection to the threshed and unthreshed stored corn. Through a study conducted in this area it was possible to identify some resistant (R-Corn) and susceptible (S-Corn) com genotypes. Using these types of corn, two experiments were conducted to look for evidence of the resistance mechanisms involved in the maize weevil/corn grain relationship. Based on the results obtained from these experiments the following observations could be made: a) when the R-Corn and the S-Corn were offered simultaneously, the S-Corn attracted 14 times more weevils than the R-Corn; b) when only the R-Corn was offered, in seven days, a high weevil mortality occurred; c) the reproductive potential decreased in the weevils reared in the R-Corn in relation to those reared in the S-Corn; d) the source of food during the adult stage contributed more for the reproductive potential than during the developmental period; e) finally, one can conclude that the resistance in corn grain to maize weevil results from a joint effect of "antibiosis" and "antixenosis".A resistência do grão de milho ao gorgulho (Sitophitus zeamais) é importante, porque ela confere proteção ao milho armazenado em espiga e a granel. Através de alguns estudos conduzidos nesta área, conseguiu-se identificar genótipos de milho-R (resistente) e milho-S (susceptível). Com estes dois tipos de milho, foram realizados dois ensaios, procurando evidências sobre os mecanismos de resistência envolvidos na associação gorgulho/grão de milho. Os resultados obtidos permitiram afirmar que: a) quando o milho-R e o milho-S foram oferecidos simultaneamente, o milho-R atraiu quatorze vezes menos gorgulhos do que o milho-S; b) quando somente o milho-R foi oferecido, em sete dias houve uma alta mortalidade de gorgulhos; c) a taxa reprodutiva e a capacidade de sobrevivência dos gorgulhos criados em milho-R foram diminuídas em relação aos criados em milho-S; d) a fonte de alimento na fase adulta foi um fator mais importante para a reprodução do gorgulho do que aquela durante a fase jovem; e) pode-se concluir que a resistência do grão de milho ao gorgulho resulta de uma ação conjunta dos mecanismos antibiose e antixenose.Pesquisa Agropecuaria BrasileiraPesquisa Agropecuária BrasileiraSantos, Jamilton P.Foste, John E.2014-04-16info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttps://seer.sct.embrapa.br/index.php/pab/article/view/15423Pesquisa Agropecuaria Brasileira; v.18, n.10, out. 1983; 1059-1063Pesquisa Agropecuária Brasileira; v.18, n.10, out. 1983; 1059-10631678-39210100-104xreponame:Pesquisa Agropecuária Brasileira (Online)instname:Empresa Brasileira de Pesquisa Agropecuária (Embrapa)instacron:EMBRAPAporhttps://seer.sct.embrapa.br/index.php/pab/article/view/15423/9333info:eu-repo/semantics/openAccess2014-04-16T18:43:04Zoai:ojs.seer.sct.embrapa.br:article/15423Revistahttp://seer.sct.embrapa.br/index.php/pabPRIhttps://old.scielo.br/oai/scielo-oai.phppab@sct.embrapa.br || sct.pab@embrapa.br1678-39210100-204Xopendoar:2014-04-16T18:43:04Pesquisa Agropecuária Brasileira (Online) - Empresa Brasileira de Pesquisa Agropecuária (Embrapa)false |
dc.title.none.fl_str_mv |
Weevil resistance mechanisms in corn kernels Mecanismos de resistência do grão de milho ao gorgulho |
title |
Weevil resistance mechanisms in corn kernels |
spellingShingle |
Weevil resistance mechanisms in corn kernels Santos, Jamilton P. Sitophilus zeamais; antibiosis; antixenosis Sitophilus zeamais; antibiose; antixenose |
title_short |
Weevil resistance mechanisms in corn kernels |
title_full |
Weevil resistance mechanisms in corn kernels |
title_fullStr |
Weevil resistance mechanisms in corn kernels |
title_full_unstemmed |
Weevil resistance mechanisms in corn kernels |
title_sort |
Weevil resistance mechanisms in corn kernels |
author |
Santos, Jamilton P. |
author_facet |
Santos, Jamilton P. Foste, John E. |
author_role |
author |
author2 |
Foste, John E. |
author2_role |
author |
dc.contributor.none.fl_str_mv |
|
dc.contributor.author.fl_str_mv |
Santos, Jamilton P. Foste, John E. |
dc.subject.por.fl_str_mv |
Sitophilus zeamais; antibiosis; antixenosis Sitophilus zeamais; antibiose; antixenose |
topic |
Sitophilus zeamais; antibiosis; antixenosis Sitophilus zeamais; antibiose; antixenose |
description |
The built in maize weevil resistance in corn kernels is important because it gives protection to the threshed and unthreshed stored corn. Through a study conducted in this area it was possible to identify some resistant (R-Corn) and susceptible (S-Corn) com genotypes. Using these types of corn, two experiments were conducted to look for evidence of the resistance mechanisms involved in the maize weevil/corn grain relationship. Based on the results obtained from these experiments the following observations could be made: a) when the R-Corn and the S-Corn were offered simultaneously, the S-Corn attracted 14 times more weevils than the R-Corn; b) when only the R-Corn was offered, in seven days, a high weevil mortality occurred; c) the reproductive potential decreased in the weevils reared in the R-Corn in relation to those reared in the S-Corn; d) the source of food during the adult stage contributed more for the reproductive potential than during the developmental period; e) finally, one can conclude that the resistance in corn grain to maize weevil results from a joint effect of "antibiosis" and "antixenosis". |
publishDate |
2014 |
dc.date.none.fl_str_mv |
2014-04-16 |
dc.type.none.fl_str_mv |
|
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://seer.sct.embrapa.br/index.php/pab/article/view/15423 |
url |
https://seer.sct.embrapa.br/index.php/pab/article/view/15423 |
dc.language.iso.fl_str_mv |
por |
language |
por |
dc.relation.none.fl_str_mv |
https://seer.sct.embrapa.br/index.php/pab/article/view/15423/9333 |
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 |
Pesquisa Agropecuaria Brasileira Pesquisa Agropecuária Brasileira |
publisher.none.fl_str_mv |
Pesquisa Agropecuaria Brasileira Pesquisa Agropecuária Brasileira |
dc.source.none.fl_str_mv |
Pesquisa Agropecuaria Brasileira; v.18, n.10, out. 1983; 1059-1063 Pesquisa Agropecuária Brasileira; v.18, n.10, out. 1983; 1059-1063 1678-3921 0100-104x reponame:Pesquisa Agropecuária Brasileira (Online) instname:Empresa Brasileira de Pesquisa Agropecuária (Embrapa) instacron:EMBRAPA |
instname_str |
Empresa Brasileira de Pesquisa Agropecuária (Embrapa) |
instacron_str |
EMBRAPA |
institution |
EMBRAPA |
reponame_str |
Pesquisa Agropecuária Brasileira (Online) |
collection |
Pesquisa Agropecuária Brasileira (Online) |
repository.name.fl_str_mv |
Pesquisa Agropecuária Brasileira (Online) - Empresa Brasileira de Pesquisa Agropecuária (Embrapa) |
repository.mail.fl_str_mv |
pab@sct.embrapa.br || sct.pab@embrapa.br |
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1793416701172252672 |