Genetic characterization of the 28 maize landraces in Paraná State
Autor(a) principal: | |
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Data de Publicação: | 2017 |
Outros Autores: | , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Semina. Ciências Agrárias (Online) |
Texto Completo: | https://ojs.uel.br/revistas/uel/index.php/semagrarias/article/view/26389 |
Resumo: | The characterization of maize landraces is extremely important in breeding programs for use of these genotypes as sources of genetic variability. The objective of this study was to quantitatively characterize 28 populations of maize landraces from the state of Paraná using the estimates of the effects of varieties and heterosis parents and the general combining ability, thereby assessing the main agronomic traits. In the crop of 2008/09, 56 inter-varietal hybrids, obtained through a topcross, 28 populations of maize landraces and three check varieties were evaluated for female flowering (FF), plant height (PH), ear height (EH) and grain mass (GY). The treatments were evaluated in a randomized block design, with two replications, at three Paraná State locations: the Experimental Center of the Agronomic Institute of Paraná in Londrina (IAPAR) and the experimental units of Pato Branco and Ponta Grossa. The data were submitted to an analysis of variance, considering a fixed model for genotypes and a random model for environments; the averages grouped by the Scott-Knott test, along with intersections of topcrosses, were analyzed according to a readapted model proposed by Oliveira et al. (1997). According to estimates of the parental effects, the GI 133 population showed the most promising estimates for all characteristics. The GI 088 and GI 173 populations stood out with promising estimates of the effects of heterosis. The conclusion is that the populations GI 133 and GI 173 may be indicated for recurrent selection programs or participation in obtaining composites. |
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Semina. Ciências Agrárias (Online) |
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Genetic characterization of the 28 maize landraces in Paraná StateCaracterização genética de 28 populações de milho crioulo no Estado do ParanáHeterosis effectsVariety effectsPre-breedingZea mays L.Efeitos de variedadeEfeitos de heterosePré-melhoramentoZea mays L.The characterization of maize landraces is extremely important in breeding programs for use of these genotypes as sources of genetic variability. The objective of this study was to quantitatively characterize 28 populations of maize landraces from the state of Paraná using the estimates of the effects of varieties and heterosis parents and the general combining ability, thereby assessing the main agronomic traits. In the crop of 2008/09, 56 inter-varietal hybrids, obtained through a topcross, 28 populations of maize landraces and three check varieties were evaluated for female flowering (FF), plant height (PH), ear height (EH) and grain mass (GY). The treatments were evaluated in a randomized block design, with two replications, at three Paraná State locations: the Experimental Center of the Agronomic Institute of Paraná in Londrina (IAPAR) and the experimental units of Pato Branco and Ponta Grossa. The data were submitted to an analysis of variance, considering a fixed model for genotypes and a random model for environments; the averages grouped by the Scott-Knott test, along with intersections of topcrosses, were analyzed according to a readapted model proposed by Oliveira et al. (1997). According to estimates of the parental effects, the GI 133 population showed the most promising estimates for all characteristics. The GI 088 and GI 173 populations stood out with promising estimates of the effects of heterosis. The conclusion is that the populations GI 133 and GI 173 may be indicated for recurrent selection programs or participation in obtaining composites.A caracterização de milho crioulo ou variedades locais de milho é de suma importância em programas de melhoramento, para utilização desses genótipos como fonte de variabilidade genética. O objetivo deste trabalho foi realizar a caracterização quantitativa de 28 populações de milho crioulo, oriundas do estado do Paraná, pelas estimativas dos efeitos de variedades e heterose de parentais e capacidade geral de combinação, avaliando as principais características agronômicas. Na safra de 2008/09, 56 híbridos intervarietais obtidos por meio de um cruzamento “topcross”, 28 populações de milho crioulo e mais três testemunhas, foram avaliados quanto ao florescimento feminino (FF), altura de planta (PH) e de espiga (EH) e massa de grãos (GY). Os tratamentos foram avaliados em delineamento de blocos ao acaso, com duas repetições, em três locais do estado de Paraná: no Centro Experimental do Instituto Agronômico do Paraná em Londrina (IAPAR) e nas unidades experimentais de Pato Branco e Ponta Grossa. Os dados foram submetidos às análises de variância, considerando-se o modelo fixo para genótipos e aleatório para ambientes, sendo as médias agrupadas pelo Teste de Scott-Knott e os cruzamentos “topcrosses” foram analisados conforme o modelo readaptado proposto por Oliveira et al. (1997). Pelas estimativas dos efeitos de variedades, a população GI 133 apresentou as estimativas mais promissoras para todas as características. As populações GI 088 e GI 173 destacaram-se pelas estimativas promissoras dos efeitos de heterose. Conclui-se que as populações GI 133 e GI 173 podem ser indicadas para programas de seleção recorrente ou participação para formação de compostos.UEL2017-08-04info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionPesquisa empírica de campoapplication/pdfhttps://ojs.uel.br/revistas/uel/index.php/semagrarias/article/view/2638910.5433/1679-0359.2017v38n4p1715Semina: Ciências Agrárias; Vol. 38 No. 4 (2017); 1715-1726Semina: Ciências Agrárias; v. 38 n. 4 (2017); 1715-17261679-03591676-546Xreponame:Semina. Ciências Agrárias (Online)instname:Universidade Estadual de Londrina (UEL)instacron:UELenghttps://ojs.uel.br/revistas/uel/index.php/semagrarias/article/view/26389/21351Copyright (c) 2017 Semina: Ciências Agráriasinfo:eu-repo/semantics/openAccessRovaris, Sara Regina SilvestrinAraújo, Pedro Mário deGarbuglio, Deoclécio DomingosAzevedo, Cleber Vinicius Guiaretta dePrete, Cássio Egídio Cavenaghi2017-08-04T11:33:47Zoai:ojs.pkp.sfu.ca:article/26389Revistahttp://www.uel.br/revistas/uel/index.php/semagrariasPUBhttps://ojs.uel.br/revistas/uel/index.php/semagrarias/oaisemina.agrarias@uel.br1679-03591676-546Xopendoar:2017-08-04T11:33:47Semina. Ciências Agrárias (Online) - Universidade Estadual de Londrina (UEL)false |
dc.title.none.fl_str_mv |
Genetic characterization of the 28 maize landraces in Paraná State Caracterização genética de 28 populações de milho crioulo no Estado do Paraná |
title |
Genetic characterization of the 28 maize landraces in Paraná State |
spellingShingle |
Genetic characterization of the 28 maize landraces in Paraná State Rovaris, Sara Regina Silvestrin Heterosis effects Variety effects Pre-breeding Zea mays L. Efeitos de variedade Efeitos de heterose Pré-melhoramento Zea mays L. |
title_short |
Genetic characterization of the 28 maize landraces in Paraná State |
title_full |
Genetic characterization of the 28 maize landraces in Paraná State |
title_fullStr |
Genetic characterization of the 28 maize landraces in Paraná State |
title_full_unstemmed |
Genetic characterization of the 28 maize landraces in Paraná State |
title_sort |
Genetic characterization of the 28 maize landraces in Paraná State |
author |
Rovaris, Sara Regina Silvestrin |
author_facet |
Rovaris, Sara Regina Silvestrin Araújo, Pedro Mário de Garbuglio, Deoclécio Domingos Azevedo, Cleber Vinicius Guiaretta de Prete, Cássio Egídio Cavenaghi |
author_role |
author |
author2 |
Araújo, Pedro Mário de Garbuglio, Deoclécio Domingos Azevedo, Cleber Vinicius Guiaretta de Prete, Cássio Egídio Cavenaghi |
author2_role |
author author author author |
dc.contributor.author.fl_str_mv |
Rovaris, Sara Regina Silvestrin Araújo, Pedro Mário de Garbuglio, Deoclécio Domingos Azevedo, Cleber Vinicius Guiaretta de Prete, Cássio Egídio Cavenaghi |
dc.subject.por.fl_str_mv |
Heterosis effects Variety effects Pre-breeding Zea mays L. Efeitos de variedade Efeitos de heterose Pré-melhoramento Zea mays L. |
topic |
Heterosis effects Variety effects Pre-breeding Zea mays L. Efeitos de variedade Efeitos de heterose Pré-melhoramento Zea mays L. |
description |
The characterization of maize landraces is extremely important in breeding programs for use of these genotypes as sources of genetic variability. The objective of this study was to quantitatively characterize 28 populations of maize landraces from the state of Paraná using the estimates of the effects of varieties and heterosis parents and the general combining ability, thereby assessing the main agronomic traits. In the crop of 2008/09, 56 inter-varietal hybrids, obtained through a topcross, 28 populations of maize landraces and three check varieties were evaluated for female flowering (FF), plant height (PH), ear height (EH) and grain mass (GY). The treatments were evaluated in a randomized block design, with two replications, at three Paraná State locations: the Experimental Center of the Agronomic Institute of Paraná in Londrina (IAPAR) and the experimental units of Pato Branco and Ponta Grossa. The data were submitted to an analysis of variance, considering a fixed model for genotypes and a random model for environments; the averages grouped by the Scott-Knott test, along with intersections of topcrosses, were analyzed according to a readapted model proposed by Oliveira et al. (1997). According to estimates of the parental effects, the GI 133 population showed the most promising estimates for all characteristics. The GI 088 and GI 173 populations stood out with promising estimates of the effects of heterosis. The conclusion is that the populations GI 133 and GI 173 may be indicated for recurrent selection programs or participation in obtaining composites. |
publishDate |
2017 |
dc.date.none.fl_str_mv |
2017-08-04 |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Pesquisa empírica de campo |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
https://ojs.uel.br/revistas/uel/index.php/semagrarias/article/view/26389 10.5433/1679-0359.2017v38n4p1715 |
url |
https://ojs.uel.br/revistas/uel/index.php/semagrarias/article/view/26389 |
identifier_str_mv |
10.5433/1679-0359.2017v38n4p1715 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
https://ojs.uel.br/revistas/uel/index.php/semagrarias/article/view/26389/21351 |
dc.rights.driver.fl_str_mv |
Copyright (c) 2017 Semina: Ciências Agrárias info:eu-repo/semantics/openAccess |
rights_invalid_str_mv |
Copyright (c) 2017 Semina: Ciências Agrárias |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
application/pdf |
dc.publisher.none.fl_str_mv |
UEL |
publisher.none.fl_str_mv |
UEL |
dc.source.none.fl_str_mv |
Semina: Ciências Agrárias; Vol. 38 No. 4 (2017); 1715-1726 Semina: Ciências Agrárias; v. 38 n. 4 (2017); 1715-1726 1679-0359 1676-546X reponame:Semina. Ciências Agrárias (Online) instname:Universidade Estadual de Londrina (UEL) instacron:UEL |
instname_str |
Universidade Estadual de Londrina (UEL) |
instacron_str |
UEL |
institution |
UEL |
reponame_str |
Semina. Ciências Agrárias (Online) |
collection |
Semina. Ciências Agrárias (Online) |
repository.name.fl_str_mv |
Semina. Ciências Agrárias (Online) - Universidade Estadual de Londrina (UEL) |
repository.mail.fl_str_mv |
semina.agrarias@uel.br |
_version_ |
1799306076392259584 |