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
- Institución
- Universidad Nacional del Nordeste
- OAI Identificador
- oai:repositorio.unne.edu.ar:123456789/28598
Ver los metadatos del registro completo
id |
RIUNNE_4be9237386be9ae68f449564d71c6289 |
---|---|
oai_identifier_str |
oai:repositorio.unne.edu.ar:123456789/28598 |
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 |
_version_ |
1844621701248188416 |
score |
12.559606 |