Planting date effects on tassel differentiation of two maize hybrids
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/16645 |
Resumo: | Two maize hybrids (Zea mays L.) (Pioneer-309 B and Agroceres-28) were planted at Guaíba, Rio Grande do Sul, Brazil, to study the effects of tour planting dates on tassel initiation. The number of days between seeding and emergence and from that to tassel differentiation was decreased as planting date was delayed. Emergence date was mainly affected by soil temperature but air temperature had a larger effect on tassel initiation. The shortening of the period up to differentiation was due to temperature effects and not to daylength, although photoperiod was variable between dates of planting. This was determined by the number of fully expanded leaves at that phase and which remained constant for each hybrid in each date. |
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Planting date effects on tassel differentiation of two maize hybridsDiferenciação do pendão de dois híbridos de milho afetada pela época de semeaduracorn; maize;Zea mays L; tassel differentiation; photoperiod; temperaturependão; milho;Zea mays L.; época de semeadura; fotoperíodo; temperaturaTwo maize hybrids (Zea mays L.) (Pioneer-309 B and Agroceres-28) were planted at Guaíba, Rio Grande do Sul, Brazil, to study the effects of tour planting dates on tassel initiation. The number of days between seeding and emergence and from that to tassel differentiation was decreased as planting date was delayed. Emergence date was mainly affected by soil temperature but air temperature had a larger effect on tassel initiation. The shortening of the period up to differentiation was due to temperature effects and not to daylength, although photoperiod was variable between dates of planting. This was determined by the number of fully expanded leaves at that phase and which remained constant for each hybrid in each date.Em um experimento de campo, estabelecido na Estação Experimental Agronômica da UFRGS, em 1976/1977, estudou-se a resposta de dois híbridos duplos de milho (Zea mays L.) (Pioneer- 309 B e Agroceres-28), em quatro épocas de semeadura (agosto a dezembro), na fase de diferenciação do pendão. Os fotoperíodos a que estavam submetidos os dois híbridos não afetaram a diferenciação do pendão, que ocorreu com um mesmo número de folhas emergidas, independentemente da época de semeadura. O número de dias, da semeadura à emergência, e desta à diferenciação do pendão, decresceu com o atraso da época de semeadura. O período de germinação foi menor, principalmente, em função dos aumentos da temperatura do solo; já para o período seguinte (até a diferenciação do pendão), a temperatura do ar foi o fator que determinou a redução do ciclo. O menor número de dias para a diferenciação do pendão, em função da época, aparentemente foi determinado apenas pelas variações de temperatura e não de comprimento do dia.Pesquisa Agropecuaria BrasileiraPesquisa Agropecuária BrasileiraCardoso, Milton JoséMundstock, Claudio Mario2014-04-15info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttps://seer.sct.embrapa.br/index.php/pab/article/view/16645Pesquisa Agropecuaria Brasileira; v.14, n.1, jan. 1979; 69-73Pesquisa Agropecuária Brasileira; v.14, n.1, jan. 1979; 69-731678-39210100-104xreponame:Pesquisa Agropecuária Brasileira (Online)instname:Empresa Brasileira de Pesquisa Agropecuária (Embrapa)instacron:EMBRAPAporhttps://seer.sct.embrapa.br/index.php/pab/article/view/16645/10953info:eu-repo/semantics/openAccess2014-04-15T19:21:30Zoai:ojs.seer.sct.embrapa.br:article/16645Revistahttp://seer.sct.embrapa.br/index.php/pabPRIhttps://old.scielo.br/oai/scielo-oai.phppab@sct.embrapa.br || sct.pab@embrapa.br1678-39210100-204Xopendoar:2014-04-15T19:21:30Pesquisa Agropecuária Brasileira (Online) - Empresa Brasileira de Pesquisa Agropecuária (Embrapa)false |
dc.title.none.fl_str_mv |
Planting date effects on tassel differentiation of two maize hybrids Diferenciação do pendão de dois híbridos de milho afetada pela época de semeadura |
title |
Planting date effects on tassel differentiation of two maize hybrids |
spellingShingle |
Planting date effects on tassel differentiation of two maize hybrids Cardoso, Milton José corn; maize;Zea mays L; tassel differentiation; photoperiod; temperature pendão; milho;Zea mays L.; época de semeadura; fotoperíodo; temperatura |
title_short |
Planting date effects on tassel differentiation of two maize hybrids |
title_full |
Planting date effects on tassel differentiation of two maize hybrids |
title_fullStr |
Planting date effects on tassel differentiation of two maize hybrids |
title_full_unstemmed |
Planting date effects on tassel differentiation of two maize hybrids |
title_sort |
Planting date effects on tassel differentiation of two maize hybrids |
author |
Cardoso, Milton José |
author_facet |
Cardoso, Milton José Mundstock, Claudio Mario |
author_role |
author |
author2 |
Mundstock, Claudio Mario |
author2_role |
author |
dc.contributor.none.fl_str_mv |
|
dc.contributor.author.fl_str_mv |
Cardoso, Milton José Mundstock, Claudio Mario |
dc.subject.por.fl_str_mv |
corn; maize;Zea mays L; tassel differentiation; photoperiod; temperature pendão; milho;Zea mays L.; época de semeadura; fotoperíodo; temperatura |
topic |
corn; maize;Zea mays L; tassel differentiation; photoperiod; temperature pendão; milho;Zea mays L.; época de semeadura; fotoperíodo; temperatura |
description |
Two maize hybrids (Zea mays L.) (Pioneer-309 B and Agroceres-28) were planted at Guaíba, Rio Grande do Sul, Brazil, to study the effects of tour planting dates on tassel initiation. The number of days between seeding and emergence and from that to tassel differentiation was decreased as planting date was delayed. Emergence date was mainly affected by soil temperature but air temperature had a larger effect on tassel initiation. The shortening of the period up to differentiation was due to temperature effects and not to daylength, although photoperiod was variable between dates of planting. This was determined by the number of fully expanded leaves at that phase and which remained constant for each hybrid in each date. |
publishDate |
2014 |
dc.date.none.fl_str_mv |
2014-04-15 |
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/16645 |
url |
https://seer.sct.embrapa.br/index.php/pab/article/view/16645 |
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/16645/10953 |
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.14, n.1, jan. 1979; 69-73 Pesquisa Agropecuária Brasileira; v.14, n.1, jan. 1979; 69-73 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_ |
1793416655254061056 |