New wild diploids in Paspalum notatum Flügge (Poaceae) : potential accessions for use in breeding

Detalhes bibliográficos
Autor(a) principal: Fachinetto, Juliana Maria
Data de Publicação: 2018
Outros Autores: Dall'Agnol, Miguel, Schifino-Wittmann, Maria Teresa, Simioni, Carine, Ávila, Mariana Rockenbach de
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Institucional da UFRGS
Texto Completo: http://hdl.handle.net/10183/206924
Resumo: Paspalum notatum is a polymorphic species with two accepted varieties, according to the ploidy level. The ploidy level is closely related to the reproductive mode of this species. Usually, diploid cytotypes have sexual reproduction, and tetraploid cytotypes have an apomictic reproduction. Apomixis limits genetic recombination, hindering the development of new cultivars. The identification of sexual plants represents many possibilities in breeding programs. This study aimed to analyze the chromosome number in P. notatum accessions under agronomic evaluation. Ploidy level was determined in 25 accessions. Two ploidy levels were detected, resulting in 21 tetraploid and four diploid accessions. The four diploid accessions originate from Argentina and Uruguay, in a region close to the origin of Pensacola, which is a diploid sexual cultivar of P. notatum. These new diploid accessions may be useful in the development of breeding programs of Paspalum species.
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spelling Fachinetto, Juliana MariaDall'Agnol, MiguelSchifino-Wittmann, Maria TeresaSimioni, CarineÁvila, Mariana Rockenbach de2020-03-25T04:16:58Z20181518-7853http://hdl.handle.net/10183/206924001114237Paspalum notatum is a polymorphic species with two accepted varieties, according to the ploidy level. The ploidy level is closely related to the reproductive mode of this species. Usually, diploid cytotypes have sexual reproduction, and tetraploid cytotypes have an apomictic reproduction. Apomixis limits genetic recombination, hindering the development of new cultivars. The identification of sexual plants represents many possibilities in breeding programs. This study aimed to analyze the chromosome number in P. notatum accessions under agronomic evaluation. Ploidy level was determined in 25 accessions. Two ploidy levels were detected, resulting in 21 tetraploid and four diploid accessions. The four diploid accessions originate from Argentina and Uruguay, in a region close to the origin of Pensacola, which is a diploid sexual cultivar of P. notatum. These new diploid accessions may be useful in the development of breeding programs of Paspalum species.application/pdfengCrop Breeding and Applied Biotechnology. Viçosa, MG. Vol. 18, n.4 (out./dez. 2018), p. 432-436Planta forrageiraPaspalum notatumMelhoramento genético vegetalCitogenéticaVariedadeCytogeneticsGenetic breedingploidy levelNew wild diploids in Paspalum notatum Flügge (Poaceae) : potential accessions for use in breedinginfo: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:UFRGSTEXT001114237.pdf.txt001114237.pdf.txtExtracted Texttext/plain18396http://www.lume.ufrgs.br/bitstream/10183/206924/2/001114237.pdf.txt84ff2a27097b43b8f40b95ae3038701bMD52ORIGINAL001114237.pdfTexto completo (inglês)application/pdf455902http://www.lume.ufrgs.br/bitstream/10183/206924/1/001114237.pdf14d517aa87c6e1a3c10def6e62055757MD5110183/2069242020-03-26 04:19:59.937575oai:www.lume.ufrgs.br:10183/206924Repositório de PublicaçõesPUBhttps://lume.ufrgs.br/oai/requestopendoar:2020-03-26T07:19:59Repositório Institucional da UFRGS - Universidade Federal do Rio Grande do Sul (UFRGS)false
dc.title.pt_BR.fl_str_mv New wild diploids in Paspalum notatum Flügge (Poaceae) : potential accessions for use in breeding
title New wild diploids in Paspalum notatum Flügge (Poaceae) : potential accessions for use in breeding
spellingShingle New wild diploids in Paspalum notatum Flügge (Poaceae) : potential accessions for use in breeding
Fachinetto, Juliana Maria
Planta forrageira
Paspalum notatum
Melhoramento genético vegetal
Citogenética
Variedade
Cytogenetics
Genetic breeding
ploidy level
title_short New wild diploids in Paspalum notatum Flügge (Poaceae) : potential accessions for use in breeding
title_full New wild diploids in Paspalum notatum Flügge (Poaceae) : potential accessions for use in breeding
title_fullStr New wild diploids in Paspalum notatum Flügge (Poaceae) : potential accessions for use in breeding
title_full_unstemmed New wild diploids in Paspalum notatum Flügge (Poaceae) : potential accessions for use in breeding
title_sort New wild diploids in Paspalum notatum Flügge (Poaceae) : potential accessions for use in breeding
author Fachinetto, Juliana Maria
author_facet Fachinetto, Juliana Maria
Dall'Agnol, Miguel
Schifino-Wittmann, Maria Teresa
Simioni, Carine
Ávila, Mariana Rockenbach de
author_role author
author2 Dall'Agnol, Miguel
Schifino-Wittmann, Maria Teresa
Simioni, Carine
Ávila, Mariana Rockenbach de
author2_role author
author
author
author
dc.contributor.author.fl_str_mv Fachinetto, Juliana Maria
Dall'Agnol, Miguel
Schifino-Wittmann, Maria Teresa
Simioni, Carine
Ávila, Mariana Rockenbach de
dc.subject.por.fl_str_mv Planta forrageira
Paspalum notatum
Melhoramento genético vegetal
Citogenética
Variedade
topic Planta forrageira
Paspalum notatum
Melhoramento genético vegetal
Citogenética
Variedade
Cytogenetics
Genetic breeding
ploidy level
dc.subject.eng.fl_str_mv Cytogenetics
Genetic breeding
ploidy level
description Paspalum notatum is a polymorphic species with two accepted varieties, according to the ploidy level. The ploidy level is closely related to the reproductive mode of this species. Usually, diploid cytotypes have sexual reproduction, and tetraploid cytotypes have an apomictic reproduction. Apomixis limits genetic recombination, hindering the development of new cultivars. The identification of sexual plants represents many possibilities in breeding programs. This study aimed to analyze the chromosome number in P. notatum accessions under agronomic evaluation. Ploidy level was determined in 25 accessions. Two ploidy levels were detected, resulting in 21 tetraploid and four diploid accessions. The four diploid accessions originate from Argentina and Uruguay, in a region close to the origin of Pensacola, which is a diploid sexual cultivar of P. notatum. These new diploid accessions may be useful in the development of breeding programs of Paspalum species.
publishDate 2018
dc.date.issued.fl_str_mv 2018
dc.date.accessioned.fl_str_mv 2020-03-25T04:16:58Z
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dc.identifier.uri.fl_str_mv http://hdl.handle.net/10183/206924
dc.identifier.issn.pt_BR.fl_str_mv 1518-7853
dc.identifier.nrb.pt_BR.fl_str_mv 001114237
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dc.language.iso.fl_str_mv eng
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dc.relation.ispartof.pt_BR.fl_str_mv Crop Breeding and Applied Biotechnology. Viçosa, MG. Vol. 18, n.4 (out./dez. 2018), p. 432-436
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dc.format.none.fl_str_mv application/pdf
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