Behavior of lines from cotton primitive race stocks to attack of the boll weevil
Autor(a) principal: | |
---|---|
Data de Publicação: | 1999 |
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/5559 |
Resumo: | The goal of the boll weevil (Anthonomus grandis Boheman) resistance program of Embrapa-Centro Nacional de Pesquisa de Algodão is to obtain cultivars that give 80% suppression when compared to commercial cultivars. The primitive cottons (Gossypium hirsutum L.) from Mexico and Central America have been known to show measurable levels of resistance to the boll weevil. In 1991 and 1992, the lines in BC1F5 and BC1F6 from Texas 277, Texas 326, Texas 1180, Texas 297, Texas 339, Texas 766 and Texas 1134 were evaluated to boll weevil resistance. The experiment was carried out at Campina Grande, PB, Brazil. The trial utilized was RCB with six replications. The plots were infested with newly emerged adults at the rate of 10,000 adults/ha. Six days after adults were released, the plots were sprayed with Cipermethrim. Infestation counts started three weeks after the Cipermethrim application and were made at weekly intervals. Five infestation counts were conducted by collecting 33 squares at random from each plot. The highest levels of resistance occurred in Texas 326-95-1, Texas 277-87-5, Texas 1180-99-2, Texas 297 and Texas 339 with 44.0, 41.2, 32.0, 40.4 and 36.4% of attack reduction, respectively, in relation to control CNPA 6H. |
id |
EMBRAPA-4_98d617e6576a91f49e39c70291a7198f |
---|---|
oai_identifier_str |
oai:ojs.seer.sct.embrapa.br:article/5559 |
network_acronym_str |
EMBRAPA-4 |
network_name_str |
Pesquisa Agropecuária Brasileira (Online) |
repository_id_str |
|
spelling |
Behavior of lines from cotton primitive race stocks to attack of the boll weevilComportamento de progênies oriundas de raças primitivas de algodão herbáceo frente ao ataque do bicudohost resistance; breeding; Gossypiumresistência do hospedeiro; melhoramento; GossypiumThe goal of the boll weevil (Anthonomus grandis Boheman) resistance program of Embrapa-Centro Nacional de Pesquisa de Algodão is to obtain cultivars that give 80% suppression when compared to commercial cultivars. The primitive cottons (Gossypium hirsutum L.) from Mexico and Central America have been known to show measurable levels of resistance to the boll weevil. In 1991 and 1992, the lines in BC1F5 and BC1F6 from Texas 277, Texas 326, Texas 1180, Texas 297, Texas 339, Texas 766 and Texas 1134 were evaluated to boll weevil resistance. The experiment was carried out at Campina Grande, PB, Brazil. The trial utilized was RCB with six replications. The plots were infested with newly emerged adults at the rate of 10,000 adults/ha. Six days after adults were released, the plots were sprayed with Cipermethrim. Infestation counts started three weeks after the Cipermethrim application and were made at weekly intervals. Five infestation counts were conducted by collecting 33 squares at random from each plot. The highest levels of resistance occurred in Texas 326-95-1, Texas 277-87-5, Texas 1180-99-2, Texas 297 and Texas 339 with 44.0, 41.2, 32.0, 40.4 and 36.4% of attack reduction, respectively, in relation to control CNPA 6H.Com o objetivo de obter linhagens resistentes ao bicudo-do-algodoeiro (Anthonomus grandis Boheman), a Embrapa-Centro Nacional de Pesquisa de Algodão vem testando progênies oriundas de raças primitivas de algodoeiro herbáceo (Gossypium hirsutum L.) originárias do México e da América Central, que apresentam níveis aceitáveis de resistência ao bicudo. Em 1991 e 1992, as progênies em BC1F5 e BC1F6 oriundas das linhagens Texas 277, Texas 326 e Texas 1180, Texas 297, Texas 339, Texas 766 e Texas 1134, foram avaliadas com relação à resistência ao bicudo. O delineamento experimental utilizado foi o de blocos ao acaso, com seis repetições. A unidade experimental foi constituída por duas fileiras de 5 m, sob um espaçamento de 0,75 m x 0,20 m. As parcelas foram infestadas com adultos do bicudo recém-emergidos, a uma taxa de 10.000 adultos/ha. Aos seis dias após a liberação dos adultos, as parcelas foram pulverizadas com Cipermethrim, sendo realizadas em intervalos semanais. Foram procedidas cinco avaliações através da coleta de 33 botões florais ao acaso, por parcela. Os maiores níveis de resistência ao bicudo foram obtidos pelas progênies Texas 326-95-1, Texas 277-87-5, Texas 1180-99-2, Texas 297 e Texas 339, com redução de ataque de 44,0, 41,2, 32,0, 40,4 e 36,4%, respectivamente, em relação à testemunha CNPA 6H.Pesquisa Agropecuaria BrasileiraPesquisa Agropecuária BrasileiraFarias, Francisco José CorreiaLukefahr, Maurice JamesCosta, Joaquim Nunes daFreire, Elêusio Curvelo1999-12-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttps://seer.sct.embrapa.br/index.php/pab/article/view/5559Pesquisa Agropecuaria Brasileira; v.34, n.12, dez. 1999; 2235-2240Pesquisa Agropecuária Brasileira; v.34, n.12, dez. 1999; 2235-22401678-39210100-104xreponame:Pesquisa Agropecuária Brasileira (Online)instname:Empresa Brasileira de Pesquisa Agropecuária (Embrapa)instacron:EMBRAPAporhttps://seer.sct.embrapa.br/index.php/pab/article/view/5559/2750info:eu-repo/semantics/openAccess2010-06-29T16:28:34Zoai:ojs.seer.sct.embrapa.br:article/5559Revistahttp://seer.sct.embrapa.br/index.php/pabPRIhttps://old.scielo.br/oai/scielo-oai.phppab@sct.embrapa.br || sct.pab@embrapa.br1678-39210100-204Xopendoar:2010-06-29T16:28:34Pesquisa Agropecuária Brasileira (Online) - Empresa Brasileira de Pesquisa Agropecuária (Embrapa)false |
dc.title.none.fl_str_mv |
Behavior of lines from cotton primitive race stocks to attack of the boll weevil Comportamento de progênies oriundas de raças primitivas de algodão herbáceo frente ao ataque do bicudo |
title |
Behavior of lines from cotton primitive race stocks to attack of the boll weevil |
spellingShingle |
Behavior of lines from cotton primitive race stocks to attack of the boll weevil Farias, Francisco José Correia host resistance; breeding; Gossypium resistência do hospedeiro; melhoramento; Gossypium |
title_short |
Behavior of lines from cotton primitive race stocks to attack of the boll weevil |
title_full |
Behavior of lines from cotton primitive race stocks to attack of the boll weevil |
title_fullStr |
Behavior of lines from cotton primitive race stocks to attack of the boll weevil |
title_full_unstemmed |
Behavior of lines from cotton primitive race stocks to attack of the boll weevil |
title_sort |
Behavior of lines from cotton primitive race stocks to attack of the boll weevil |
author |
Farias, Francisco José Correia |
author_facet |
Farias, Francisco José Correia Lukefahr, Maurice James Costa, Joaquim Nunes da Freire, Elêusio Curvelo |
author_role |
author |
author2 |
Lukefahr, Maurice James Costa, Joaquim Nunes da Freire, Elêusio Curvelo |
author2_role |
author author author |
dc.contributor.none.fl_str_mv |
|
dc.contributor.author.fl_str_mv |
Farias, Francisco José Correia Lukefahr, Maurice James Costa, Joaquim Nunes da Freire, Elêusio Curvelo |
dc.subject.por.fl_str_mv |
host resistance; breeding; Gossypium resistência do hospedeiro; melhoramento; Gossypium |
topic |
host resistance; breeding; Gossypium resistência do hospedeiro; melhoramento; Gossypium |
description |
The goal of the boll weevil (Anthonomus grandis Boheman) resistance program of Embrapa-Centro Nacional de Pesquisa de Algodão is to obtain cultivars that give 80% suppression when compared to commercial cultivars. The primitive cottons (Gossypium hirsutum L.) from Mexico and Central America have been known to show measurable levels of resistance to the boll weevil. In 1991 and 1992, the lines in BC1F5 and BC1F6 from Texas 277, Texas 326, Texas 1180, Texas 297, Texas 339, Texas 766 and Texas 1134 were evaluated to boll weevil resistance. The experiment was carried out at Campina Grande, PB, Brazil. The trial utilized was RCB with six replications. The plots were infested with newly emerged adults at the rate of 10,000 adults/ha. Six days after adults were released, the plots were sprayed with Cipermethrim. Infestation counts started three weeks after the Cipermethrim application and were made at weekly intervals. Five infestation counts were conducted by collecting 33 squares at random from each plot. The highest levels of resistance occurred in Texas 326-95-1, Texas 277-87-5, Texas 1180-99-2, Texas 297 and Texas 339 with 44.0, 41.2, 32.0, 40.4 and 36.4% of attack reduction, respectively, in relation to control CNPA 6H. |
publishDate |
1999 |
dc.date.none.fl_str_mv |
1999-12-01 |
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/5559 |
url |
https://seer.sct.embrapa.br/index.php/pab/article/view/5559 |
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/5559/2750 |
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.34, n.12, dez. 1999; 2235-2240 Pesquisa Agropecuária Brasileira; v.34, n.12, dez. 1999; 2235-2240 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 |
_version_ |
1793416680097972224 |