Genetic variability in maize and teosinte populations estimated by microsatellites markers

Detalhes bibliográficos
Autor(a) principal: Terra,Tatiana de Freitas
Data de Publicação: 2011
Outros Autores: Wiethölter,Paula, Almeida,Cícero Carlos de Souza, Silva,Sérgio Delmar dos Anjos e, Bered,Fernanda, Sereno,Maria Jane Cruz de Melo, Barbosa Neto,José Fernandes
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Ciência Rural
Texto Completo: http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782011000200003
Resumo: Wild species are important sources of genetic variability and may be exploited by breeding programs. Crosses between teosinte and maize occur freely and teosinte serves as genetic source of agronomic traits for introduction in maize. The objective of this study was to estimate genetic variability among and within maize and teosinte populations (Zea mays mexicana). Two sweet maize populations (BR400 and BR402), two common maize populations (Suwan and Pampa) and one teosinte population were analyzed using microsatellites markers. Results indicated that 64,5% of the variation was detected within the populations, suggesting the possibility of obtaining genetic progress by selection within each population. The analysis with 25 microsatellites loci enabled the identification of 92 alleles with a mean of 3.7 alleles per locus. The average Polymorphism Information Content (PIC) was 0.52. The percentage of polymorphic loci varied from 64% in the BR400 and Pampa populations to 80% in the teosinte population. The estimated genetic distance confirmed the genomic similarity of maize and teosinte.
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spelling Genetic variability in maize and teosinte populations estimated by microsatellites markersZea mays maysZea mays mexicanagenetic diversityflooding tolerancemolecular markersWild species are important sources of genetic variability and may be exploited by breeding programs. Crosses between teosinte and maize occur freely and teosinte serves as genetic source of agronomic traits for introduction in maize. The objective of this study was to estimate genetic variability among and within maize and teosinte populations (Zea mays mexicana). Two sweet maize populations (BR400 and BR402), two common maize populations (Suwan and Pampa) and one teosinte population were analyzed using microsatellites markers. Results indicated that 64,5% of the variation was detected within the populations, suggesting the possibility of obtaining genetic progress by selection within each population. The analysis with 25 microsatellites loci enabled the identification of 92 alleles with a mean of 3.7 alleles per locus. The average Polymorphism Information Content (PIC) was 0.52. The percentage of polymorphic loci varied from 64% in the BR400 and Pampa populations to 80% in the teosinte population. The estimated genetic distance confirmed the genomic similarity of maize and teosinte.Universidade Federal de Santa Maria2011-02-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782011000200003Ciência Rural v.41 n.2 2011reponame:Ciência Ruralinstname:Universidade Federal de Santa Maria (UFSM)instacron:UFSM10.1590/S0103-84782011005000005info:eu-repo/semantics/openAccessTerra,Tatiana de FreitasWiethölter,PaulaAlmeida,Cícero Carlos de SouzaSilva,Sérgio Delmar dos Anjos eBered,FernandaSereno,Maria Jane Cruz de MeloBarbosa Neto,José Fernandeseng2011-09-26T00:00:00ZRevista
dc.title.none.fl_str_mv Genetic variability in maize and teosinte populations estimated by microsatellites markers
title Genetic variability in maize and teosinte populations estimated by microsatellites markers
spellingShingle Genetic variability in maize and teosinte populations estimated by microsatellites markers
Terra,Tatiana de Freitas
Zea mays mays
Zea mays mexicana
genetic diversity
flooding tolerance
molecular markers
title_short Genetic variability in maize and teosinte populations estimated by microsatellites markers
title_full Genetic variability in maize and teosinte populations estimated by microsatellites markers
title_fullStr Genetic variability in maize and teosinte populations estimated by microsatellites markers
title_full_unstemmed Genetic variability in maize and teosinte populations estimated by microsatellites markers
title_sort Genetic variability in maize and teosinte populations estimated by microsatellites markers
author Terra,Tatiana de Freitas
author_facet Terra,Tatiana de Freitas
Wiethölter,Paula
Almeida,Cícero Carlos de Souza
Silva,Sérgio Delmar dos Anjos e
Bered,Fernanda
Sereno,Maria Jane Cruz de Melo
Barbosa Neto,José Fernandes
author_role author
author2 Wiethölter,Paula
Almeida,Cícero Carlos de Souza
Silva,Sérgio Delmar dos Anjos e
Bered,Fernanda
Sereno,Maria Jane Cruz de Melo
Barbosa Neto,José Fernandes
author2_role author
author
author
author
author
author
dc.contributor.author.fl_str_mv Terra,Tatiana de Freitas
Wiethölter,Paula
Almeida,Cícero Carlos de Souza
Silva,Sérgio Delmar dos Anjos e
Bered,Fernanda
Sereno,Maria Jane Cruz de Melo
Barbosa Neto,José Fernandes
dc.subject.por.fl_str_mv Zea mays mays
Zea mays mexicana
genetic diversity
flooding tolerance
molecular markers
topic Zea mays mays
Zea mays mexicana
genetic diversity
flooding tolerance
molecular markers
description Wild species are important sources of genetic variability and may be exploited by breeding programs. Crosses between teosinte and maize occur freely and teosinte serves as genetic source of agronomic traits for introduction in maize. The objective of this study was to estimate genetic variability among and within maize and teosinte populations (Zea mays mexicana). Two sweet maize populations (BR400 and BR402), two common maize populations (Suwan and Pampa) and one teosinte population were analyzed using microsatellites markers. Results indicated that 64,5% of the variation was detected within the populations, suggesting the possibility of obtaining genetic progress by selection within each population. The analysis with 25 microsatellites loci enabled the identification of 92 alleles with a mean of 3.7 alleles per locus. The average Polymorphism Information Content (PIC) was 0.52. The percentage of polymorphic loci varied from 64% in the BR400 and Pampa populations to 80% in the teosinte population. The estimated genetic distance confirmed the genomic similarity of maize and teosinte.
publishDate 2011
dc.date.none.fl_str_mv 2011-02-01
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782011000200003
url http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782011000200003
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv 10.1590/S0103-84782011005000005
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv text/html
dc.publisher.none.fl_str_mv Universidade Federal de Santa Maria
publisher.none.fl_str_mv Universidade Federal de Santa Maria
dc.source.none.fl_str_mv Ciência Rural v.41 n.2 2011
reponame:Ciência Rural
instname:Universidade Federal de Santa Maria (UFSM)
instacron:UFSM
instname_str Universidade Federal de Santa Maria (UFSM)
instacron_str UFSM
institution UFSM
reponame_str Ciência Rural
collection Ciência Rural
repository.name.fl_str_mv
repository.mail.fl_str_mv
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