Recurrence of multiple meiotic abnormalities in maize genotypes from the same origin and their influence on productivity.
Main Author: | |
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Publication Date: | 2002 |
Other Authors: | , , |
Format: | Article |
Language: | eng |
Source: | Repositório Institucional da EMBRAPA (Repository Open Access to Scientific Information from EMBRAPA - Alice) |
Download full: | http://www.alice.cnptia.embrapa.br/alice/handle/doc/465789 |
Summary: | The frequency of meiotic abnormalities among single-, double- and three-way cross experimental hybrids and their parental inbred lines is studied. Among the sixteen inbred lines examined, fifteen originated from populations developed at the National Center of Research in Maize and Sorghum (CNPMS/Embrapa) and one from a population developed at ESALQ (Faculty of Agriculture Luiz de Queiroz of the University of São Paulo). Previous analyses of homozygous and heterozygous maize genotypes from CNPMS populations demonstrated high meiotic instability. The present investigation aims at analyzing the meiotic behavior of different inbred lines obtained from CNPMS populations by another breeding enterprise to verify the presence of the same abnormalities and determine whether the abnormalities might compromise productivity. Analyses showed the presence of some abnormalities described previously, albeit at a lower frequency. The most common abnormalities in homozygous and heterozygous genotypes from CNPMS populations were related to irregular chromosome segregation and to chromosome stickiness. An inbred line from the ESALQ population showed only abnormalities related to irregular chromosome segregation caused by the presence of univalent chromosomes. The Pearson correlation procedure indicated high negative correlation between meiotic abnormalities and productivity. |
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Recurrence of multiple meiotic abnormalities in maize genotypes from the same origin and their influence on productivity.MilhoThe frequency of meiotic abnormalities among single-, double- and three-way cross experimental hybrids and their parental inbred lines is studied. Among the sixteen inbred lines examined, fifteen originated from populations developed at the National Center of Research in Maize and Sorghum (CNPMS/Embrapa) and one from a population developed at ESALQ (Faculty of Agriculture Luiz de Queiroz of the University of São Paulo). Previous analyses of homozygous and heterozygous maize genotypes from CNPMS populations demonstrated high meiotic instability. The present investigation aims at analyzing the meiotic behavior of different inbred lines obtained from CNPMS populations by another breeding enterprise to verify the presence of the same abnormalities and determine whether the abnormalities might compromise productivity. Analyses showed the presence of some abnormalities described previously, albeit at a lower frequency. The most common abnormalities in homozygous and heterozygous genotypes from CNPMS populations were related to irregular chromosome segregation and to chromosome stickiness. An inbred line from the ESALQ population showed only abnormalities related to irregular chromosome segregation caused by the presence of univalent chromosomes. The Pearson correlation procedure indicated high negative correlation between meiotic abnormalities and productivity.MARIA SUELY PAGLIARINI, UEM; MARLI APARECIDA DEFANI, UEM; WALTER FERNANDES MEIRELLES, CNPMS; JOSÉ ERIVALDO PEREIRA, CNPSo.PAGLIARINI, M. S.DEFANI, M. A.MEIRELLES, W. F.PEREIRA, J. E.2018-04-25T00:36:42Z2018-04-25T00:36:42Z2003-10-2820022018-04-25T00:36:42Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleCrop Breeding and Applied Biotechnology, Londrina, v. 2, n. 3, p. 355-360, sep. 2002.http://www.alice.cnptia.embrapa.br/alice/handle/doc/465789enginfo:eu-repo/semantics/openAccessreponame:Repositório Institucional da EMBRAPA (Repository Open Access to Scientific Information from EMBRAPA - Alice)instname:Empresa Brasileira de Pesquisa Agropecuária (Embrapa)instacron:EMBRAPA2018-04-25T00:36:48Zoai:www.alice.cnptia.embrapa.br:doc/465789Repositório InstitucionalPUBhttps://www.alice.cnptia.embrapa.br/oai/requestopendoar:21542018-04-25T00:36:48falseRepositório InstitucionalPUBhttps://www.alice.cnptia.embrapa.br/oai/requestcg-riaa@embrapa.bropendoar:21542018-04-25T00:36:48Repositório Institucional da EMBRAPA (Repository Open Access to Scientific Information from EMBRAPA - Alice) - Empresa Brasileira de Pesquisa Agropecuária (Embrapa)false |
dc.title.none.fl_str_mv |
Recurrence of multiple meiotic abnormalities in maize genotypes from the same origin and their influence on productivity. |
title |
Recurrence of multiple meiotic abnormalities in maize genotypes from the same origin and their influence on productivity. |
spellingShingle |
Recurrence of multiple meiotic abnormalities in maize genotypes from the same origin and their influence on productivity. PAGLIARINI, M. S. Milho |
title_short |
Recurrence of multiple meiotic abnormalities in maize genotypes from the same origin and their influence on productivity. |
title_full |
Recurrence of multiple meiotic abnormalities in maize genotypes from the same origin and their influence on productivity. |
title_fullStr |
Recurrence of multiple meiotic abnormalities in maize genotypes from the same origin and their influence on productivity. |
title_full_unstemmed |
Recurrence of multiple meiotic abnormalities in maize genotypes from the same origin and their influence on productivity. |
title_sort |
Recurrence of multiple meiotic abnormalities in maize genotypes from the same origin and their influence on productivity. |
author |
PAGLIARINI, M. S. |
author_facet |
PAGLIARINI, M. S. DEFANI, M. A. MEIRELLES, W. F. PEREIRA, J. E. |
author_role |
author |
author2 |
DEFANI, M. A. MEIRELLES, W. F. PEREIRA, J. E. |
author2_role |
author author author |
dc.contributor.none.fl_str_mv |
MARIA SUELY PAGLIARINI, UEM; MARLI APARECIDA DEFANI, UEM; WALTER FERNANDES MEIRELLES, CNPMS; JOSÉ ERIVALDO PEREIRA, CNPSo. |
dc.contributor.author.fl_str_mv |
PAGLIARINI, M. S. DEFANI, M. A. MEIRELLES, W. F. PEREIRA, J. E. |
dc.subject.por.fl_str_mv |
Milho |
topic |
Milho |
description |
The frequency of meiotic abnormalities among single-, double- and three-way cross experimental hybrids and their parental inbred lines is studied. Among the sixteen inbred lines examined, fifteen originated from populations developed at the National Center of Research in Maize and Sorghum (CNPMS/Embrapa) and one from a population developed at ESALQ (Faculty of Agriculture Luiz de Queiroz of the University of São Paulo). Previous analyses of homozygous and heterozygous maize genotypes from CNPMS populations demonstrated high meiotic instability. The present investigation aims at analyzing the meiotic behavior of different inbred lines obtained from CNPMS populations by another breeding enterprise to verify the presence of the same abnormalities and determine whether the abnormalities might compromise productivity. Analyses showed the presence of some abnormalities described previously, albeit at a lower frequency. The most common abnormalities in homozygous and heterozygous genotypes from CNPMS populations were related to irregular chromosome segregation and to chromosome stickiness. An inbred line from the ESALQ population showed only abnormalities related to irregular chromosome segregation caused by the presence of univalent chromosomes. The Pearson correlation procedure indicated high negative correlation between meiotic abnormalities and productivity. |
publishDate |
2002 |
dc.date.none.fl_str_mv |
2002 2003-10-28 2018-04-25T00:36:42Z 2018-04-25T00:36:42Z 2018-04-25T00:36:42Z |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/publishedVersion info:eu-repo/semantics/article |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
Crop Breeding and Applied Biotechnology, Londrina, v. 2, n. 3, p. 355-360, sep. 2002. http://www.alice.cnptia.embrapa.br/alice/handle/doc/465789 |
identifier_str_mv |
Crop Breeding and Applied Biotechnology, Londrina, v. 2, n. 3, p. 355-360, sep. 2002. |
url |
http://www.alice.cnptia.embrapa.br/alice/handle/doc/465789 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
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openAccess |
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Empresa Brasileira de Pesquisa Agropecuária (Embrapa) |
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EMBRAPA |
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EMBRAPA |
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Repositório Institucional da EMBRAPA (Repository Open Access to Scientific Information from EMBRAPA - Alice) |
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Repositório Institucional da EMBRAPA (Repository Open Access to Scientific Information from EMBRAPA - Alice) |
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Repositório Institucional da EMBRAPA (Repository Open Access to Scientific Information from EMBRAPA - Alice) - Empresa Brasileira de Pesquisa Agropecuária (Embrapa) |
repository.mail.fl_str_mv |
cg-riaa@embrapa.br |
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1794503452918808576 |