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

Autores
Novo, Patricia Elda; Valls, José Francisco M.; Galdeano, Florencia; Honfi, Ana Isabel; Espinoza, Francisco; Quarin, Camilo Luis
Año de publicación
2016
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
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.
Fil: Novo, Patricia Elda. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Nordeste. Instituto de Botánica del Nordeste. Universidad Nacional del Nordeste. Facultad de Ciencias Agrarias. Instituto de Botánica del Nordeste; Argentina
Fil: Valls, José Francisco M.. Ministerio da Agricultura Pecuaria e Abastecimento de Brasil. Empresa Brasileira de Pesquisa Agropecuaria; Brasil
Fil: Galdeano, Florencia. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Nordeste. Instituto de Botánica del Nordeste. Universidad Nacional del Nordeste. Facultad de Ciencias Agrarias. Instituto de Botánica del Nordeste; Argentina
Fil: Honfi, Ana Isabel. Universidad Nacional de Misiones; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: Espinoza, Francisco. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Nordeste. Instituto de Botánica del Nordeste. Universidad Nacional del Nordeste. Facultad de Ciencias Agrarias. Instituto de Botánica del Nordeste; Argentina
Fil: Quarin, Camilo Luis. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Nordeste. Instituto de Botánica del Nordeste. Universidad Nacional del Nordeste. Facultad de Ciencias Agrarias. Instituto de Botánica del Nordeste; Argentina
Materia
APOMIXIS
DNA CONTENT
FERTILITY
MEIOSIS
REPRODUCTIVE MODE
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/29987
Acceder
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network_name_str CONICET Digital (CONICET)
spelling Interspecific hybrids between Paspalum plicatulum and P. oteroi: a key tool for forage breedingNovo, Patricia EldaValls, José Francisco M.Galdeano, FlorenciaHonfi, Ana IsabelEspinoza, FranciscoQuarin, Camilo LuisAPOMIXISDNA CONTENTFERTILITYMEIOSISREPRODUCTIVE MODEhttps://purl.org/becyt/ford/4.1https://purl.org/becyt/ford/4Grama-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.Fil: Novo, Patricia Elda. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Nordeste. Instituto de Botánica del Nordeste. Universidad Nacional del Nordeste. Facultad de Ciencias Agrarias. Instituto de Botánica del Nordeste; ArgentinaFil: Valls, José Francisco M.. Ministerio da Agricultura Pecuaria e Abastecimento de Brasil. Empresa Brasileira de Pesquisa Agropecuaria; BrasilFil: Galdeano, Florencia. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Nordeste. Instituto de Botánica del Nordeste. Universidad Nacional del Nordeste. Facultad de Ciencias Agrarias. Instituto de Botánica del Nordeste; ArgentinaFil: Honfi, Ana Isabel. Universidad Nacional de Misiones; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaFil: Espinoza, Francisco. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Nordeste. Instituto de Botánica del Nordeste. Universidad Nacional del Nordeste. Facultad de Ciencias Agrarias. Instituto de Botánica del Nordeste; ArgentinaFil: Quarin, Camilo Luis. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Nordeste. Instituto de Botánica del Nordeste. Universidad Nacional del Nordeste. Facultad de Ciencias Agrarias. Instituto de Botánica del Nordeste; ArgentinaUniversidade de São Paulo2016-08info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/29987Novo, Patricia Elda; Valls, José Francisco M.; Galdeano, Florencia; Honfi, Ana Isabel; Espinoza, Francisco; et al.; Interspecific hybrids between Paspalum plicatulum and P. oteroi: a key tool for forage breeding; Universidade de São Paulo; Scientia Agricola; 73; 4; 8-2016; 356-3620103-90161678-992XCONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/doi/10.1590/0103-9016-2015-0218info:eu-repo/semantics/altIdentifier/url/http://ref.scielo.org/w2pjg9info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-10-22T11:47:14Zoai:ri.conicet.gov.ar:11336/29987instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982025-10-22 11:47:14.495CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
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
APOMIXIS
DNA CONTENT
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
Valls, José Francisco M.
Galdeano, Florencia
Honfi, Ana Isabel
Espinoza, Francisco
Quarin, Camilo Luis
author Novo, Patricia Elda
author_facet Novo, Patricia Elda
Valls, José Francisco M.
Galdeano, Florencia
Honfi, Ana Isabel
Espinoza, Francisco
Quarin, Camilo Luis
author_role author
author2 Valls, José Francisco M.
Galdeano, Florencia
Honfi, Ana Isabel
Espinoza, Francisco
Quarin, Camilo Luis
author2_role author
author
author
author
author
dc.subject.none.fl_str_mv APOMIXIS
DNA CONTENT
FERTILITY
MEIOSIS
REPRODUCTIVE MODE
topic APOMIXIS
DNA CONTENT
FERTILITY
MEIOSIS
REPRODUCTIVE MODE
purl_subject.fl_str_mv https://purl.org/becyt/ford/4.1
https://purl.org/becyt/ford/4
dc.description.none.fl_txt_mv 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.
Fil: Novo, Patricia Elda. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Nordeste. Instituto de Botánica del Nordeste. Universidad Nacional del Nordeste. Facultad de Ciencias Agrarias. Instituto de Botánica del Nordeste; Argentina
Fil: Valls, José Francisco M.. Ministerio da Agricultura Pecuaria e Abastecimento de Brasil. Empresa Brasileira de Pesquisa Agropecuaria; Brasil
Fil: Galdeano, Florencia. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Nordeste. Instituto de Botánica del Nordeste. Universidad Nacional del Nordeste. Facultad de Ciencias Agrarias. Instituto de Botánica del Nordeste; Argentina
Fil: Honfi, Ana Isabel. Universidad Nacional de Misiones; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: Espinoza, Francisco. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Nordeste. Instituto de Botánica del Nordeste. Universidad Nacional del Nordeste. Facultad de Ciencias Agrarias. Instituto de Botánica del Nordeste; Argentina
Fil: Quarin, Camilo Luis. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Nordeste. Instituto de Botánica del Nordeste. Universidad Nacional del Nordeste. Facultad de Ciencias Agrarias. Instituto de Botánica del Nordeste; Argentina
description 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.
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 http://hdl.handle.net/11336/29987
Novo, Patricia Elda; Valls, José Francisco M.; Galdeano, Florencia; Honfi, Ana Isabel; Espinoza, Francisco; et al.; Interspecific hybrids between Paspalum plicatulum and P. oteroi: a key tool for forage breeding; Universidade de São Paulo; Scientia Agricola; 73; 4; 8-2016; 356-362
0103-9016
1678-992X
CONICET Digital
CONICET
url http://hdl.handle.net/11336/29987
identifier_str_mv Novo, Patricia Elda; Valls, José Francisco M.; Galdeano, Florencia; Honfi, Ana Isabel; Espinoza, Francisco; et al.; Interspecific hybrids between Paspalum plicatulum and P. oteroi: a key tool for forage breeding; Universidade de São Paulo; Scientia Agricola; 73; 4; 8-2016; 356-362
0103-9016
1678-992X
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/doi/10.1590/0103-9016-2015-0218
info:eu-repo/semantics/altIdentifier/url/http://ref.scielo.org/w2pjg9
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
application/pdf
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 reponame:CONICET Digital (CONICET)
instname:Consejo Nacional de Investigaciones Científicas y Técnicas
reponame_str CONICET Digital (CONICET)
collection CONICET Digital (CONICET)
instname_str Consejo Nacional de Investigaciones Científicas y Técnicas
repository.name.fl_str_mv CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas
repository.mail.fl_str_mv dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar
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score 12.982451

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