Interspecific hybrids between Paspalum plicatulum and P. oteroi: a key tool for forage breeding

Autores
Novo, Patricia Elda; Montenegro Valls, José Francisco; Galdeano, Florencia; Honfi, Ana Isabel; Espinoza, Francisco; Quarin, Camilo Luis
Año de publicación
2016
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Fil: Novo, Patricia Elda. Universidad Nacional del Nordeste. Facultad de Ciencias Agrarias; Argentina.
Fil: Montenegro Valls, José Francisco. Embrapa Genetic Resources and Biotechnology; Brasil.
Fil: Galdeano, Florencia. Universidad Nacional del Nordeste. Facultad de Ciencias Agrarias; Argentina.
Fil: Honfi, Ana Isabel. Universidad Nacional de Misiones. Facultad de Ciencias Exactas, Químicas y Naturales; Argentina.
Fil: Espinoza, Francisco. Universidad Nacional del Nordeste. Facultad de Ciencias Agrarias; Argentina.
Fil: Quarin, Camilo Luis. Universidad Nacional del Nordeste. Facultad de Ciencias Agrarias; Argentina.
Grama-tio-pedro (Paspalum oteroi Swallen) is a rare stoloniferous grass of the Plicatula group of Paspalum, well adapted to continuous grazing in areas subject to seasonal flooding in the Pantanal region, in central western Brazil. The species is a facultative apomictic (asexual reproduction by seed) tetraploid, sporadically cultivated in Pantanal farms, either propagated by cuttings or seed. Due to its potential for extensive cultivation and its forage quality, it appears as a good candidate for genetic improvement within the Plicatula group through plant breeding. Taking advantage of a colchicine-induced sexual autotetraploid genotype of P. plicatulum Michx. we obtained interspecific hybrids by using the apomictic species, P. oteroi, as pollen donor. The very similar meiotic chromosome behavior observed in both parents, with mainly quadrivalent and bivalent associations, suggested that P. oteroi is a natural autotetraploid. The hybrids showed less irregular meiotic behavior with fewer quadrivalents and more bivalents than either parent. The fertility among interspecific hybrids varied from complete sterility in some of them, to seed productions in others that were approximately twice as much as for either parent. The great variability of seed set performance may well be a drastic genetic consequence of joining two homologous chromosome sets of P. plicatulum together with two homologous sets of P. oteroi which in turn have some homeology between them. Because most hybrids reproduce by mean of sexuality, they could be used as female parents in backcrosses and in crosses with other species of the Plicatula group for interspecific gene transferring in breeding programs.
Fuente
vol. 73, no. 4, p. 356-362.
Materia
DNA content
Apomixis
Fertility
Meiosis
Reproductive Mode
Nivel de accesibilidad
acceso abierto
Condiciones de uso
http://creativecommons.org/licenses/by-nc-nd/2.5/ar/
Repositorio
Repositorio Institucional de la Universidad Nacional del Nordeste (UNNE)
Institución
Universidad Nacional del Nordeste
OAI Identificador
oai:repositorio.unne.edu.ar:123456789/28598

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network_acronym_str RIUNNE
repository_id_str 4871
network_name_str Repositorio Institucional de la Universidad Nacional del Nordeste (UNNE)
spelling Interspecific hybrids between Paspalum plicatulum and P. oteroi: a key tool for forage breedingNovo, Patricia EldaMontenegro Valls, José FranciscoGaldeano, FlorenciaHonfi, Ana IsabelEspinoza, FranciscoQuarin, Camilo LuisDNA contentApomixisFertilityMeiosisReproductive ModeFil: Novo, Patricia Elda. Universidad Nacional del Nordeste. Facultad de Ciencias Agrarias; Argentina.Fil: Montenegro Valls, José Francisco. Embrapa Genetic Resources and Biotechnology; Brasil.Fil: Galdeano, Florencia. Universidad Nacional del Nordeste. Facultad de Ciencias Agrarias; Argentina.Fil: Honfi, Ana Isabel. Universidad Nacional de Misiones. Facultad de Ciencias Exactas, Químicas y Naturales; Argentina.Fil: Espinoza, Francisco. Universidad Nacional del Nordeste. Facultad de Ciencias Agrarias; Argentina.Fil: Quarin, Camilo Luis. Universidad Nacional del Nordeste. Facultad de Ciencias Agrarias; Argentina.Grama-tio-pedro (Paspalum oteroi Swallen) is a rare stoloniferous grass of the Plicatula group of Paspalum, well adapted to continuous grazing in areas subject to seasonal flooding in the Pantanal region, in central western Brazil. The species is a facultative apomictic (asexual reproduction by seed) tetraploid, sporadically cultivated in Pantanal farms, either propagated by cuttings or seed. Due to its potential for extensive cultivation and its forage quality, it appears as a good candidate for genetic improvement within the Plicatula group through plant breeding. Taking advantage of a colchicine-induced sexual autotetraploid genotype of P. plicatulum Michx. we obtained interspecific hybrids by using the apomictic species, P. oteroi, as pollen donor. The very similar meiotic chromosome behavior observed in both parents, with mainly quadrivalent and bivalent associations, suggested that P. oteroi is a natural autotetraploid. The hybrids showed less irregular meiotic behavior with fewer quadrivalents and more bivalents than either parent. The fertility among interspecific hybrids varied from complete sterility in some of them, to seed productions in others that were approximately twice as much as for either parent. The great variability of seed set performance may well be a drastic genetic consequence of joining two homologous chromosome sets of P. plicatulum together with two homologous sets of P. oteroi which in turn have some homeology between them. Because most hybrids reproduce by mean of sexuality, they could be used as female parents in backcrosses and in crosses with other species of the Plicatula group for interspecific gene transferring in breeding programs.Universidade de São Paulo2016-08info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfNovo, Patricia Elda, et al., 2016. Interspecific hybrids between Paspalum plicatulum and P. oteroi: a key tool for forage breeding. Scientia Agricola. São Paulo: Universidade de São Paulo, vol. 73, no. 4, p. 356-362. ISSN 0103-9016.0103-9016http://repositorio.unne.edu.ar/handle/123456789/28598vol. 73, no. 4, p. 356-362.reponame:Repositorio Institucional de la Universidad Nacional del Nordeste (UNNE)instname:Universidad Nacional del Nordesteenghttp://dx.doi.org/10.1590/0103-9016-2015-0218http://ref.scielo.org/w2pjg9info:eu-repo/semantics/openAccesshttp://creativecommons.org/licenses/by-nc-nd/2.5/ar/Atribución-NoComercial-SinDerivadas 2.5 Argentina2025-09-29T14:30:58Zoai:repositorio.unne.edu.ar:123456789/28598instacron:UNNEInstitucionalhttp://repositorio.unne.edu.ar/Universidad públicaNo correspondehttp://repositorio.unne.edu.ar/oaiososa@bib.unne.edu.ar;sergio.alegria@unne.edu.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:48712025-09-29 14:30:58.785Repositorio Institucional de la Universidad Nacional del Nordeste (UNNE) - Universidad Nacional del Nordestefalse
dc.title.none.fl_str_mv Interspecific hybrids between Paspalum plicatulum and P. oteroi: a key tool for forage breeding
title Interspecific hybrids between Paspalum plicatulum and P. oteroi: a key tool for forage breeding
spellingShingle Interspecific hybrids between Paspalum plicatulum and P. oteroi: a key tool for forage breeding
Novo, Patricia Elda
DNA content
Apomixis
Fertility
Meiosis
Reproductive Mode
title_short Interspecific hybrids between Paspalum plicatulum and P. oteroi: a key tool for forage breeding
title_full Interspecific hybrids between Paspalum plicatulum and P. oteroi: a key tool for forage breeding
title_fullStr Interspecific hybrids between Paspalum plicatulum and P. oteroi: a key tool for forage breeding
title_full_unstemmed Interspecific hybrids between Paspalum plicatulum and P. oteroi: a key tool for forage breeding
title_sort Interspecific hybrids between Paspalum plicatulum and P. oteroi: a key tool for forage breeding
dc.creator.none.fl_str_mv Novo, Patricia Elda
Montenegro Valls, José Francisco
Galdeano, Florencia
Honfi, Ana Isabel
Espinoza, Francisco
Quarin, Camilo Luis
author Novo, Patricia Elda
author_facet Novo, Patricia Elda
Montenegro Valls, José Francisco
Galdeano, Florencia
Honfi, Ana Isabel
Espinoza, Francisco
Quarin, Camilo Luis
author_role author
author2 Montenegro Valls, José Francisco
Galdeano, Florencia
Honfi, Ana Isabel
Espinoza, Francisco
Quarin, Camilo Luis
author2_role author
author
author
author
author
dc.subject.none.fl_str_mv DNA content
Apomixis
Fertility
Meiosis
Reproductive Mode
topic DNA content
Apomixis
Fertility
Meiosis
Reproductive Mode
dc.description.none.fl_txt_mv Fil: Novo, Patricia Elda. Universidad Nacional del Nordeste. Facultad de Ciencias Agrarias; Argentina.
Fil: Montenegro Valls, José Francisco. Embrapa Genetic Resources and Biotechnology; Brasil.
Fil: Galdeano, Florencia. Universidad Nacional del Nordeste. Facultad de Ciencias Agrarias; Argentina.
Fil: Honfi, Ana Isabel. Universidad Nacional de Misiones. Facultad de Ciencias Exactas, Químicas y Naturales; Argentina.
Fil: Espinoza, Francisco. Universidad Nacional del Nordeste. Facultad de Ciencias Agrarias; Argentina.
Fil: Quarin, Camilo Luis. Universidad Nacional del Nordeste. Facultad de Ciencias Agrarias; Argentina.
Grama-tio-pedro (Paspalum oteroi Swallen) is a rare stoloniferous grass of the Plicatula group of Paspalum, well adapted to continuous grazing in areas subject to seasonal flooding in the Pantanal region, in central western Brazil. The species is a facultative apomictic (asexual reproduction by seed) tetraploid, sporadically cultivated in Pantanal farms, either propagated by cuttings or seed. Due to its potential for extensive cultivation and its forage quality, it appears as a good candidate for genetic improvement within the Plicatula group through plant breeding. Taking advantage of a colchicine-induced sexual autotetraploid genotype of P. plicatulum Michx. we obtained interspecific hybrids by using the apomictic species, P. oteroi, as pollen donor. The very similar meiotic chromosome behavior observed in both parents, with mainly quadrivalent and bivalent associations, suggested that P. oteroi is a natural autotetraploid. The hybrids showed less irregular meiotic behavior with fewer quadrivalents and more bivalents than either parent. The fertility among interspecific hybrids varied from complete sterility in some of them, to seed productions in others that were approximately twice as much as for either parent. The great variability of seed set performance may well be a drastic genetic consequence of joining two homologous chromosome sets of P. plicatulum together with two homologous sets of P. oteroi which in turn have some homeology between them. Because most hybrids reproduce by mean of sexuality, they could be used as female parents in backcrosses and in crosses with other species of the Plicatula group for interspecific gene transferring in breeding programs.
description Fil: Novo, Patricia Elda. Universidad Nacional del Nordeste. Facultad de Ciencias Agrarias; Argentina.
publishDate 2016
dc.date.none.fl_str_mv 2016-08
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
http://purl.org/coar/resource_type/c_6501
info:ar-repo/semantics/articulo
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv Novo, Patricia Elda, et al., 2016. Interspecific hybrids between Paspalum plicatulum and P. oteroi: a key tool for forage breeding. Scientia Agricola. São Paulo: Universidade de São Paulo, vol. 73, no. 4, p. 356-362. ISSN 0103-9016.
0103-9016
http://repositorio.unne.edu.ar/handle/123456789/28598
identifier_str_mv Novo, Patricia Elda, et al., 2016. Interspecific hybrids between Paspalum plicatulum and P. oteroi: a key tool for forage breeding. Scientia Agricola. São Paulo: Universidade de São Paulo, vol. 73, no. 4, p. 356-362. ISSN 0103-9016.
0103-9016
url http://repositorio.unne.edu.ar/handle/123456789/28598
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv http://dx.doi.org/10.1590/0103-9016-2015-0218
http://ref.scielo.org/w2pjg9
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
http://creativecommons.org/licenses/by-nc-nd/2.5/ar/
Atribución-NoComercial-SinDerivadas 2.5 Argentina
eu_rights_str_mv openAccess
rights_invalid_str_mv http://creativecommons.org/licenses/by-nc-nd/2.5/ar/
Atribución-NoComercial-SinDerivadas 2.5 Argentina
dc.format.none.fl_str_mv application/pdf
application/pdf
dc.publisher.none.fl_str_mv Universidade de São Paulo
publisher.none.fl_str_mv Universidade de São Paulo
dc.source.none.fl_str_mv vol. 73, no. 4, p. 356-362.
reponame:Repositorio Institucional de la Universidad Nacional del Nordeste (UNNE)
instname:Universidad Nacional del Nordeste
reponame_str Repositorio Institucional de la Universidad Nacional del Nordeste (UNNE)
collection Repositorio Institucional de la Universidad Nacional del Nordeste (UNNE)
instname_str Universidad Nacional del Nordeste
repository.name.fl_str_mv Repositorio Institucional de la Universidad Nacional del Nordeste (UNNE) - Universidad Nacional del Nordeste
repository.mail.fl_str_mv ososa@bib.unne.edu.ar;sergio.alegria@unne.edu.ar
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score 12.559606