Reproductive analyses of intraspecific Paspalum notatum Flügge hybrids.

Detalhes bibliográficos
Autor(a) principal: Krycki,Karine Cristina
Data de Publicação: 2020
Outros Autores: Tedesco,Marília, Rodrigues,Vitória, Weiler,Roberto Luis, Brunes,André Pich, Dall’Agnol,Miguel, Simioni,Carine
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Crop Breeding and Applied Biotechnology
Texto Completo: http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1984-70332020000100207
Resumo: Abstract Paspalum notatum is an important forage native to Southern Brazil and one of the most promising fodder species in terms of productivity, quality, resistance and growth speed. The objective of this study was to evaluate the reproductive mode and fertility of hybrid progenies resulting from artificial crosses among artificially duplicated sexual plants, selected intraspecific hybrids of the UFRGS breeding program and apomictic ecotypes of the species. The resulting F1 progenies were represented by 24 plants with high pollen viability (varying from 82.15 to 99.67%) and 1.2:1 segregation for the sexual: apomictic reproduction mode, indicating predominantly sexual hybrids, due to distorted segregation. In the apomictic plants, most chromosomes paired as bivalents in diakinesis. Since the low presence of abnormalities observed in the meiotic chromosome pairing and the high pollen viability of the hybrids, all plants were confirmed as promising parents for future crosses.
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spelling Reproductive analyses of intraspecific Paspalum notatum Flügge hybrids.Reproduction modemeiotic behaviorpollen viabilityAbstract Paspalum notatum is an important forage native to Southern Brazil and one of the most promising fodder species in terms of productivity, quality, resistance and growth speed. The objective of this study was to evaluate the reproductive mode and fertility of hybrid progenies resulting from artificial crosses among artificially duplicated sexual plants, selected intraspecific hybrids of the UFRGS breeding program and apomictic ecotypes of the species. The resulting F1 progenies were represented by 24 plants with high pollen viability (varying from 82.15 to 99.67%) and 1.2:1 segregation for the sexual: apomictic reproduction mode, indicating predominantly sexual hybrids, due to distorted segregation. In the apomictic plants, most chromosomes paired as bivalents in diakinesis. Since the low presence of abnormalities observed in the meiotic chromosome pairing and the high pollen viability of the hybrids, all plants were confirmed as promising parents for future crosses.Crop Breeding and Applied Biotechnology2020-01-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S1984-70332020000100207Crop Breeding and Applied Biotechnology v.20 n.1 2020reponame:Crop Breeding and Applied Biotechnologyinstname:Sociedade Brasileira de Melhoramento de Plantasinstacron:CBAB10.1590/1984-70332020v20n1a14info:eu-repo/semantics/openAccessKrycki,Karine CristinaTedesco,MaríliaRodrigues,VitóriaWeiler,Roberto LuisBrunes,André PichDall’Agnol,MiguelSimioni,Carineeng2020-03-20T00:00:00Zoai:scielo:S1984-70332020000100207Revistahttps://cbab.sbmp.org.br/#ONGhttps://old.scielo.br/oai/scielo-oai.phpcbabjournal@gmail.com||cbab@ufv.br1984-70331518-7853opendoar:2020-03-20T00:00Crop Breeding and Applied Biotechnology - Sociedade Brasileira de Melhoramento de Plantasfalse
dc.title.none.fl_str_mv Reproductive analyses of intraspecific Paspalum notatum Flügge hybrids.
title Reproductive analyses of intraspecific Paspalum notatum Flügge hybrids.
spellingShingle Reproductive analyses of intraspecific Paspalum notatum Flügge hybrids.
Krycki,Karine Cristina
Reproduction mode
meiotic behavior
pollen viability
title_short Reproductive analyses of intraspecific Paspalum notatum Flügge hybrids.
title_full Reproductive analyses of intraspecific Paspalum notatum Flügge hybrids.
title_fullStr Reproductive analyses of intraspecific Paspalum notatum Flügge hybrids.
title_full_unstemmed Reproductive analyses of intraspecific Paspalum notatum Flügge hybrids.
title_sort Reproductive analyses of intraspecific Paspalum notatum Flügge hybrids.
author Krycki,Karine Cristina
author_facet Krycki,Karine Cristina
Tedesco,Marília
Rodrigues,Vitória
Weiler,Roberto Luis
Brunes,André Pich
Dall’Agnol,Miguel
Simioni,Carine
author_role author
author2 Tedesco,Marília
Rodrigues,Vitória
Weiler,Roberto Luis
Brunes,André Pich
Dall’Agnol,Miguel
Simioni,Carine
author2_role author
author
author
author
author
author
dc.contributor.author.fl_str_mv Krycki,Karine Cristina
Tedesco,Marília
Rodrigues,Vitória
Weiler,Roberto Luis
Brunes,André Pich
Dall’Agnol,Miguel
Simioni,Carine
dc.subject.por.fl_str_mv Reproduction mode
meiotic behavior
pollen viability
topic Reproduction mode
meiotic behavior
pollen viability
description Abstract Paspalum notatum is an important forage native to Southern Brazil and one of the most promising fodder species in terms of productivity, quality, resistance and growth speed. The objective of this study was to evaluate the reproductive mode and fertility of hybrid progenies resulting from artificial crosses among artificially duplicated sexual plants, selected intraspecific hybrids of the UFRGS breeding program and apomictic ecotypes of the species. The resulting F1 progenies were represented by 24 plants with high pollen viability (varying from 82.15 to 99.67%) and 1.2:1 segregation for the sexual: apomictic reproduction mode, indicating predominantly sexual hybrids, due to distorted segregation. In the apomictic plants, most chromosomes paired as bivalents in diakinesis. Since the low presence of abnormalities observed in the meiotic chromosome pairing and the high pollen viability of the hybrids, all plants were confirmed as promising parents for future crosses.
publishDate 2020
dc.date.none.fl_str_mv 2020-01-01
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=S1984-70332020000100207
url http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1984-70332020000100207
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv 10.1590/1984-70332020v20n1a14
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 Crop Breeding and Applied Biotechnology
publisher.none.fl_str_mv Crop Breeding and Applied Biotechnology
dc.source.none.fl_str_mv Crop Breeding and Applied Biotechnology v.20 n.1 2020
reponame:Crop Breeding and Applied Biotechnology
instname:Sociedade Brasileira de Melhoramento de Plantas
instacron:CBAB
instname_str Sociedade Brasileira de Melhoramento de Plantas
instacron_str CBAB
institution CBAB
reponame_str Crop Breeding and Applied Biotechnology
collection Crop Breeding and Applied Biotechnology
repository.name.fl_str_mv Crop Breeding and Applied Biotechnology - Sociedade Brasileira de Melhoramento de Plantas
repository.mail.fl_str_mv cbabjournal@gmail.com||cbab@ufv.br
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