New wild diploids in Paspalum notatum Flügge (Poaceae) : potential accessions for use in breeding
Autor(a) principal: | |
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Data de Publicação: | 2018 |
Outros Autores: | , , , |
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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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 |
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/10183/206924 |
dc.identifier.issn.pt_BR.fl_str_mv |
1518-7853 |
dc.identifier.nrb.pt_BR.fl_str_mv |
001114237 |
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1518-7853 001114237 |
url |
http://hdl.handle.net/10183/206924 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
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 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
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openAccess |
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application/pdf |
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reponame:Repositório Institucional da UFRGS instname:Universidade Federal do Rio Grande do Sul (UFRGS) instacron:UFRGS |
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UFRGS |
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Repositório Institucional da UFRGS |
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Repositório Institucional da UFRGS |
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http://www.lume.ufrgs.br/bitstream/10183/206924/2/001114237.pdf.txt http://www.lume.ufrgs.br/bitstream/10183/206924/1/001114237.pdf |
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Repositório Institucional da UFRGS - Universidade Federal do Rio Grande do Sul (UFRGS) |
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