Mode of Reproduction and Meiotic Chromosome Behavior in Acroceras macrum

Autores
Ferrari Usandizaga, Silvana Consuelo; Martínez, Eric Javier; Schedler, Mara; Honfi, Ana I.; Acuña, Carlos Alberto
Año de publicación
2020
Idioma
inglés
Tipo de recurso
artículo
Estado
versión aceptada
Descripción
Acroceras macrum Stapf is a high-quality C3 grass species adapted to the subtropics. It is a valuable forage resource in frequently flooded environments. The objectives were to analyze the type of polyploidy, mode of reproduction, and estimate seed and pollen fertility. A living collection of 22 tetraploid and five hexaploid genotypes of A. macrum was analyzed. Type of polyploidy was analyzed from chromosomal pairing at diakinesis and prometaphase I, and meiotic irregularities were evaluated during the microsporogenesis. Pollen viability was also examined. Bivalents predominated in tetraploids and trivalents in hexaploids. Meiotic abnormalities were more frequent in hexaploids than in tetraploids, and they were mainly related to mechanisms of chromosome nondisjunction. The reproductive mode was determined by cytological analysis of megasporogenesis and megagametogenesis, seed fertility under different pollination methods, and molecular progeny tests. In both tetraploid and hexaploid races, only the development of single meiotically derived embryo sacs was observed. Greater seed production in outcrossing compared with selfing indicated a primarily allogamous matting system. Progenies from crosses between genetically different tetraploid genotypes amplified male-specific molecular markers, indicating a hybrid origin and solid evidence of sexual reproduction. Population breeding approaches developed for sexual cross-pollinated species are suited for improving A. macrum.
EEA Corrientes
Fil: Ferrari Usandizaga, Silvana Consuelo. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Corrientes; Argentina
Fil: Martínez, Eric Javier. 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: Schedler, Mara. 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 I. Universidad Nacional de Misiones. Instituto de Biología Subtropical nodo Posadas. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Biología Subtropical nodo Posadas; Argentina
Fil: Acuña, Carlos Alberto. 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
Fuente
Crop Science : 1-22 (January 2020)
Materia
Acroceras macrum
Gramineas
Cromosomas
Meiosis
Genotipos
Grasses
Chromosomes
Genotypes
Pasto del Nilo
Nile Grass
Nivel de accesibilidad
acceso restringido
Condiciones de uso
Repositorio
INTA Digital (INTA)
Institución
Instituto Nacional de Tecnología Agropecuaria
OAI Identificador
oai:localhost:20.500.12123/6777
Acceder
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oai_identifier_str oai:localhost:20.500.12123/6777
network_acronym_str INTADig
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network_name_str INTA Digital (INTA)
spelling Mode of Reproduction and Meiotic Chromosome Behavior in Acroceras macrumFerrari Usandizaga, Silvana ConsueloMartínez, Eric JavierSchedler, MaraHonfi, Ana I.Acuña, Carlos AlbertoAcroceras macrumGramineasCromosomasMeiosisGenotiposGrassesChromosomesGenotypesPasto del NiloNile GrassAcroceras macrum Stapf is a high-quality C3 grass species adapted to the subtropics. It is a valuable forage resource in frequently flooded environments. The objectives were to analyze the type of polyploidy, mode of reproduction, and estimate seed and pollen fertility. A living collection of 22 tetraploid and five hexaploid genotypes of A. macrum was analyzed. Type of polyploidy was analyzed from chromosomal pairing at diakinesis and prometaphase I, and meiotic irregularities were evaluated during the microsporogenesis. Pollen viability was also examined. Bivalents predominated in tetraploids and trivalents in hexaploids. Meiotic abnormalities were more frequent in hexaploids than in tetraploids, and they were mainly related to mechanisms of chromosome nondisjunction. The reproductive mode was determined by cytological analysis of megasporogenesis and megagametogenesis, seed fertility under different pollination methods, and molecular progeny tests. In both tetraploid and hexaploid races, only the development of single meiotically derived embryo sacs was observed. Greater seed production in outcrossing compared with selfing indicated a primarily allogamous matting system. Progenies from crosses between genetically different tetraploid genotypes amplified male-specific molecular markers, indicating a hybrid origin and solid evidence of sexual reproduction. Population breeding approaches developed for sexual cross-pollinated species are suited for improving A. macrum.EEA CorrientesFil: Ferrari Usandizaga, Silvana Consuelo. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Corrientes; ArgentinaFil: Martínez, Eric Javier. 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: Schedler, Mara. 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 I. Universidad Nacional de Misiones. Instituto de Biología Subtropical nodo Posadas. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Biología Subtropical nodo Posadas; ArgentinaFil: Acuña, Carlos Alberto. 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; ArgentinaWileyinfo:eu-repo/date/embargoEnd/2021-02-172020-02-17T13:27:00Z2020-02-17T13:27:00Z2020-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/acceptedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfhttps://onlinelibrary.wiley.com/doi/abs/10.1002/csc2.20081http://hdl.handle.net/20.500.12123/67770011-183X1435-0653https://doi.org/10.1002/csc2.20081Crop Science : 1-22 (January 2020)reponame:INTA Digital (INTA)instname:Instituto Nacional de Tecnología Agropecuariaenginfo:eu-repo/semantics/restrictedAccess2025-10-16T09:29:44Zoai:localhost:20.500.12123/6777instacron:INTAInstitucionalhttp://repositorio.inta.gob.ar/Organismo científico-tecnológicoNo correspondehttp://repositorio.inta.gob.ar/oai/requesttripaldi.nicolas@inta.gob.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:l2025-10-16 09:29:45.247INTA Digital (INTA) - Instituto Nacional de Tecnología Agropecuariafalse
dc.title.none.fl_str_mv Mode of Reproduction and Meiotic Chromosome Behavior in Acroceras macrum
title Mode of Reproduction and Meiotic Chromosome Behavior in Acroceras macrum
spellingShingle Mode of Reproduction and Meiotic Chromosome Behavior in Acroceras macrum
Ferrari Usandizaga, Silvana Consuelo
Acroceras macrum
Gramineas
Cromosomas
Meiosis
Genotipos
Grasses
Chromosomes
Genotypes
Pasto del Nilo
Nile Grass
title_short Mode of Reproduction and Meiotic Chromosome Behavior in Acroceras macrum
title_full Mode of Reproduction and Meiotic Chromosome Behavior in Acroceras macrum
title_fullStr Mode of Reproduction and Meiotic Chromosome Behavior in Acroceras macrum
title_full_unstemmed Mode of Reproduction and Meiotic Chromosome Behavior in Acroceras macrum
title_sort Mode of Reproduction and Meiotic Chromosome Behavior in Acroceras macrum
dc.creator.none.fl_str_mv Ferrari Usandizaga, Silvana Consuelo
Martínez, Eric Javier
Schedler, Mara
Honfi, Ana I.
Acuña, Carlos Alberto
author Ferrari Usandizaga, Silvana Consuelo
author_facet Ferrari Usandizaga, Silvana Consuelo
Martínez, Eric Javier
Schedler, Mara
Honfi, Ana I.
Acuña, Carlos Alberto
author_role author
author2 Martínez, Eric Javier
Schedler, Mara
Honfi, Ana I.
Acuña, Carlos Alberto
author2_role author
author
author
author
dc.subject.none.fl_str_mv Acroceras macrum
Gramineas
Cromosomas
Meiosis
Genotipos
Grasses
Chromosomes
Genotypes
Pasto del Nilo
Nile Grass
topic Acroceras macrum
Gramineas
Cromosomas
Meiosis
Genotipos
Grasses
Chromosomes
Genotypes
Pasto del Nilo
Nile Grass
dc.description.none.fl_txt_mv Acroceras macrum Stapf is a high-quality C3 grass species adapted to the subtropics. It is a valuable forage resource in frequently flooded environments. The objectives were to analyze the type of polyploidy, mode of reproduction, and estimate seed and pollen fertility. A living collection of 22 tetraploid and five hexaploid genotypes of A. macrum was analyzed. Type of polyploidy was analyzed from chromosomal pairing at diakinesis and prometaphase I, and meiotic irregularities were evaluated during the microsporogenesis. Pollen viability was also examined. Bivalents predominated in tetraploids and trivalents in hexaploids. Meiotic abnormalities were more frequent in hexaploids than in tetraploids, and they were mainly related to mechanisms of chromosome nondisjunction. The reproductive mode was determined by cytological analysis of megasporogenesis and megagametogenesis, seed fertility under different pollination methods, and molecular progeny tests. In both tetraploid and hexaploid races, only the development of single meiotically derived embryo sacs was observed. Greater seed production in outcrossing compared with selfing indicated a primarily allogamous matting system. Progenies from crosses between genetically different tetraploid genotypes amplified male-specific molecular markers, indicating a hybrid origin and solid evidence of sexual reproduction. Population breeding approaches developed for sexual cross-pollinated species are suited for improving A. macrum.
EEA Corrientes
Fil: Ferrari Usandizaga, Silvana Consuelo. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Corrientes; Argentina
Fil: Martínez, Eric Javier. 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: Schedler, Mara. 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 I. Universidad Nacional de Misiones. Instituto de Biología Subtropical nodo Posadas. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Biología Subtropical nodo Posadas; Argentina
Fil: Acuña, Carlos Alberto. 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 Acroceras macrum Stapf is a high-quality C3 grass species adapted to the subtropics. It is a valuable forage resource in frequently flooded environments. The objectives were to analyze the type of polyploidy, mode of reproduction, and estimate seed and pollen fertility. A living collection of 22 tetraploid and five hexaploid genotypes of A. macrum was analyzed. Type of polyploidy was analyzed from chromosomal pairing at diakinesis and prometaphase I, and meiotic irregularities were evaluated during the microsporogenesis. Pollen viability was also examined. Bivalents predominated in tetraploids and trivalents in hexaploids. Meiotic abnormalities were more frequent in hexaploids than in tetraploids, and they were mainly related to mechanisms of chromosome nondisjunction. The reproductive mode was determined by cytological analysis of megasporogenesis and megagametogenesis, seed fertility under different pollination methods, and molecular progeny tests. In both tetraploid and hexaploid races, only the development of single meiotically derived embryo sacs was observed. Greater seed production in outcrossing compared with selfing indicated a primarily allogamous matting system. Progenies from crosses between genetically different tetraploid genotypes amplified male-specific molecular markers, indicating a hybrid origin and solid evidence of sexual reproduction. Population breeding approaches developed for sexual cross-pollinated species are suited for improving A. macrum.
publishDate 2020
dc.date.none.fl_str_mv 2020-02-17T13:27:00Z
2020-02-17T13:27:00Z
2020-01
info:eu-repo/date/embargoEnd/2021-02-17
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/acceptedVersion
http://purl.org/coar/resource_type/c_6501
info:ar-repo/semantics/articulo
format article
status_str acceptedVersion
dc.identifier.none.fl_str_mv https://onlinelibrary.wiley.com/doi/abs/10.1002/csc2.20081
http://hdl.handle.net/20.500.12123/6777
0011-183X
1435-0653
https://doi.org/10.1002/csc2.20081
url https://onlinelibrary.wiley.com/doi/abs/10.1002/csc2.20081
http://hdl.handle.net/20.500.12123/6777
https://doi.org/10.1002/csc2.20081
identifier_str_mv 0011-183X
1435-0653
dc.language.none.fl_str_mv eng
language eng
dc.rights.none.fl_str_mv info:eu-repo/semantics/restrictedAccess
eu_rights_str_mv restrictedAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Wiley
publisher.none.fl_str_mv Wiley
dc.source.none.fl_str_mv Crop Science : 1-22 (January 2020)
reponame:INTA Digital (INTA)
instname:Instituto Nacional de Tecnología Agropecuaria
reponame_str INTA Digital (INTA)
collection INTA Digital (INTA)
instname_str Instituto Nacional de Tecnología Agropecuaria
repository.name.fl_str_mv INTA Digital (INTA) - Instituto Nacional de Tecnología Agropecuaria
repository.mail.fl_str_mv tripaldi.nicolas@inta.gob.ar
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score 12.712165

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