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: Repositório Institucional da UFRGS
Texto Completo: http://hdl.handle.net/10183/254794
Resumo: 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.
id UFRGS-2_f9908c4df0e4f092f95a9f6af8f3f527
oai_identifier_str oai:www.lume.ufrgs.br:10183/254794
network_acronym_str UFRGS-2
network_name_str Repositório Institucional da UFRGS
repository_id_str
spelling Krycki, Karine CristinaTedesco, MaríliaRodrigues, VitóriaWeiler, Roberto LuisBrunes, André PichDall'Agnol, MiguelSimioni, Carine2023-02-14T03:22:11Z20201518-7853http://hdl.handle.net/10183/254794001161569Paspalum 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.application/pdfengCrop Breeding and Applied Biotechnology, Londrina. Vol. 20, n. 1 (2020), e291620114, 7 p.Graminea forrageiraGrama-batataisReprodução vegetalReproduction modeMeiotic behaviorPollen viabilityReproductive analyses of intraspecific Paspalum notatum Flügge hybridsinfo:eu-repo/semantics/articleinfo:eu-repo/semantics/otherinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/openAccessreponame:Repositório Institucional da UFRGSinstname:Universidade Federal do Rio Grande do Sul (UFRGS)instacron:UFRGSTEXT001161569.pdf.txt001161569.pdf.txtExtracted Texttext/plain29130http://www.lume.ufrgs.br/bitstream/10183/254794/2/001161569.pdf.txt4062ff0c2f6882b5f10ba68d26ffd1faMD52ORIGINAL001161569.pdfTexto completo (inglês)application/pdf586738http://www.lume.ufrgs.br/bitstream/10183/254794/1/001161569.pdfc17fb437960d7989c2cabaee27109332MD5110183/2547942023-02-15 04:24:26.131007oai:www.lume.ufrgs.br:10183/254794Repositório de PublicaçõesPUBhttps://lume.ufrgs.br/oai/requestopendoar:2023-02-15T06:24:26Repositório Institucional da UFRGS - Universidade Federal do Rio Grande do Sul (UFRGS)false
dc.title.pt_BR.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
Graminea forrageira
Grama-batatais
Reprodução vegetal
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 Graminea forrageira
Grama-batatais
Reprodução vegetal
topic Graminea forrageira
Grama-batatais
Reprodução vegetal
Reproduction mode
Meiotic behavior
Pollen viability
dc.subject.eng.fl_str_mv Reproduction mode
Meiotic behavior
Pollen viability
description 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.issued.fl_str_mv 2020
dc.date.accessioned.fl_str_mv 2023-02-14T03:22:11Z
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/other
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv http://hdl.handle.net/10183/254794
dc.identifier.issn.pt_BR.fl_str_mv 1518-7853
dc.identifier.nrb.pt_BR.fl_str_mv 001161569
identifier_str_mv 1518-7853
001161569
url http://hdl.handle.net/10183/254794
dc.language.iso.fl_str_mv eng
language eng
dc.relation.ispartof.pt_BR.fl_str_mv Crop Breeding and Applied Biotechnology, Londrina. Vol. 20, n. 1 (2020), e291620114, 7 p.
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.source.none.fl_str_mv reponame:Repositório Institucional da UFRGS
instname:Universidade Federal do Rio Grande do Sul (UFRGS)
instacron:UFRGS
instname_str Universidade Federal do Rio Grande do Sul (UFRGS)
instacron_str UFRGS
institution UFRGS
reponame_str Repositório Institucional da UFRGS
collection Repositório Institucional da UFRGS
bitstream.url.fl_str_mv http://www.lume.ufrgs.br/bitstream/10183/254794/2/001161569.pdf.txt
http://www.lume.ufrgs.br/bitstream/10183/254794/1/001161569.pdf
bitstream.checksum.fl_str_mv 4062ff0c2f6882b5f10ba68d26ffd1fa
c17fb437960d7989c2cabaee27109332
bitstream.checksumAlgorithm.fl_str_mv MD5
MD5
repository.name.fl_str_mv Repositório Institucional da UFRGS - Universidade Federal do Rio Grande do Sul (UFRGS)
repository.mail.fl_str_mv
_version_ 1815447819773804544

Registros relacionados