Responses of corn seeds with different levels of vigor to water availability

Detalhes bibliográficos
Autor(a) principal: Piana, Zenório
Data de Publicação: 1998
Outros Autores: Silva, Walter Rodrigues da
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/4975
Resumo: An investigation was carried out under laboratory and field conditions in order to study the relationship between corn (Zea mays L.) seed performance and water availability. Physiological quality of seeds from 60 lots, cultivar AG 303, yields of 1989/90, 1990/91 and 1991/92, were evaluated in laboratory using the standard germination test, the cold test with soil and germination test with hydric stress of -3 atm (PEG 6000). Under field conditions seed lots were exposed to four hydric potentials: -0.1, -0.5, -15 and less than -15 atm, in order to evaluate field emergence. Corn seeds with high vigor presented the highest performance under water deficit condition. Soil hydric potential of -0.5 atm allows a higher corn seed emergence. Cold test and the germination test with hydric stress of -3 atm can be used to estimate behavior of seed lots under adverse conditions of water availability in the soil.
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spelling Responses of corn seeds with different levels of vigor to water availabilityRespostas de sementes de milho, com diferentes níveis de vigor, à disponibilidade hídricaZea mays; hydric stress; poliethylene glycolZea mays; estresse hídrico; polietilenoglicolAn investigation was carried out under laboratory and field conditions in order to study the relationship between corn (Zea mays L.) seed performance and water availability. Physiological quality of seeds from 60 lots, cultivar AG 303, yields of 1989/90, 1990/91 and 1991/92, were evaluated in laboratory using the standard germination test, the cold test with soil and germination test with hydric stress of -3 atm (PEG 6000). Under field conditions seed lots were exposed to four hydric potentials: -0.1, -0.5, -15 and less than -15 atm, in order to evaluate field emergence. Corn seeds with high vigor presented the highest performance under water deficit condition. Soil hydric potential of -0.5 atm allows a higher corn seed emergence. Cold test and the germination test with hydric stress of -3 atm can be used to estimate behavior of seed lots under adverse conditions of water availability in the soil.Com o objetivo de estudar a relação existente entre o desempenho das sementes de milho (Zea mays L.) e a disponibilidade hídrica, desenvolveu-se este trabalho empregando substratos, com potenciais hídricos variáveis, em estudos de laboratório e de campo. A germinação e o vigor de 60 lotes de sementes, da cultivar AG 303, das safras agrícolas 1989/90, 1990/91 e 1991/92, foram avaliados, em laboratório, mediante testes de germinação, de frio com solo e de germinação sob estresse hídrico de -3 atm, usando solução de PEG 6.000. No campo, as sementes foram expostas a potenciais hídricos de -0,1, -0,5, -15 e inferior a -15 atm, para avaliação da porcentagem de emergência de plântulas. Sementes de milho com vigor mais elevado apresentam desempenho superior em condições de deficiência hídrica. O potencial hídrico de -0,5 atm no solo possibilita emergência superior às sementes de milho. Os testes de frio com solo e de germinação sob estresse hídrico de -3 atm podem ser usados para estimar o desempenho relativo de lotes de sementes de milho em situações desfavoráveis de disponibilidade hídrica no solo.Pesquisa Agropecuaria BrasileiraPesquisa Agropecuária BrasileiraPiana, ZenórioSilva, Walter Rodrigues da1998-09-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttps://seer.sct.embrapa.br/index.php/pab/article/view/4975Pesquisa Agropecuaria Brasileira; v.33, n.9, set. 1998; 1525-1531Pesquisa Agropecuária Brasileira; v.33, n.9, set. 1998; 1525-15311678-39210100-104xreponame:Pesquisa Agropecuária Brasileira (Online)instname:Empresa Brasileira de Pesquisa Agropecuária (Embrapa)instacron:EMBRAPAporhttps://seer.sct.embrapa.br/index.php/pab/article/view/4975/7137info:eu-repo/semantics/openAccess2015-01-15T16:00:28Zoai:ojs.seer.sct.embrapa.br:article/4975Revistahttp://seer.sct.embrapa.br/index.php/pabPRIhttps://old.scielo.br/oai/scielo-oai.phppab@sct.embrapa.br || sct.pab@embrapa.br1678-39210100-204Xopendoar:2015-01-15T16:00:28Pesquisa Agropecuária Brasileira (Online) - Empresa Brasileira de Pesquisa Agropecuária (Embrapa)false
dc.title.none.fl_str_mv Responses of corn seeds with different levels of vigor to water availability
Respostas de sementes de milho, com diferentes níveis de vigor, à disponibilidade hídrica
title Responses of corn seeds with different levels of vigor to water availability
spellingShingle Responses of corn seeds with different levels of vigor to water availability
Piana, Zenório
Zea mays; hydric stress; poliethylene glycol
Zea mays; estresse hídrico; polietilenoglicol
title_short Responses of corn seeds with different levels of vigor to water availability
title_full Responses of corn seeds with different levels of vigor to water availability
title_fullStr Responses of corn seeds with different levels of vigor to water availability
title_full_unstemmed Responses of corn seeds with different levels of vigor to water availability
title_sort Responses of corn seeds with different levels of vigor to water availability
author Piana, Zenório
author_facet Piana, Zenório
Silva, Walter Rodrigues da
author_role author
author2 Silva, Walter Rodrigues da
author2_role author
dc.contributor.none.fl_str_mv

dc.contributor.author.fl_str_mv Piana, Zenório
Silva, Walter Rodrigues da
dc.subject.por.fl_str_mv Zea mays; hydric stress; poliethylene glycol
Zea mays; estresse hídrico; polietilenoglicol
topic Zea mays; hydric stress; poliethylene glycol
Zea mays; estresse hídrico; polietilenoglicol
description An investigation was carried out under laboratory and field conditions in order to study the relationship between corn (Zea mays L.) seed performance and water availability. Physiological quality of seeds from 60 lots, cultivar AG 303, yields of 1989/90, 1990/91 and 1991/92, were evaluated in laboratory using the standard germination test, the cold test with soil and germination test with hydric stress of -3 atm (PEG 6000). Under field conditions seed lots were exposed to four hydric potentials: -0.1, -0.5, -15 and less than -15 atm, in order to evaluate field emergence. Corn seeds with high vigor presented the highest performance under water deficit condition. Soil hydric potential of -0.5 atm allows a higher corn seed emergence. Cold test and the germination test with hydric stress of -3 atm can be used to estimate behavior of seed lots under adverse conditions of water availability in the soil.
publishDate 1998
dc.date.none.fl_str_mv 1998-09-01
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/4975
url https://seer.sct.embrapa.br/index.php/pab/article/view/4975
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/4975/7137
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.33, n.9, set. 1998; 1525-1531
Pesquisa Agropecuária Brasileira; v.33, n.9, set. 1998; 1525-1531
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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