Planting date effects on tassel differentiation of two maize hybrids

Detalhes bibliográficos
Autor(a) principal: Cardoso, Milton José
Data de Publicação: 2014
Outros Autores: Mundstock, Claudio Mario
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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spelling 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
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