Cytogenetic study of a tetraploid hybrid Zea diploperennis x Zea perennis

Autores
Molina, María del Carmen
Año de publicación
1985
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
It had been obtained a tetraploid hybrid (2n=40), crossing Z. diploperennis (2n=20) with Z. perennis (2n=40) by non disjunction of the gametes of Z. diploperennis.The cytological study indicated that there were no univalents and trivalents. Most of the chromosomes paired as bivalents and tetravalents preferently openring. The average of the counts in 214 cells in diakinesis was: 0.24I, 11.29II, 0.06III and 4.20IV. The average of chiasmata was 31.42 and at pachynema some translocations and inversions were observed.In anaphase in the 78% of the cells the same number of chromosomes migrated to each pole and in the left 22% different number of chromosomes migrated towards each pole or remained as lagging chromosomes. Only exceptionally chromatid bridges were observed.The fertility of the pollen is 56% with 80% of fertile seed being the progeny fertile and vigorous.
Facultad de Ciencias Agrarias y Forestales
Materia
Ingeniería Agronómica
Biología
Z. diploperennis
Z. perennis
cytological study
Nivel de accesibilidad
acceso abierto
Condiciones de uso
http://creativecommons.org/licenses/by/4.0/
Repositorio
SEDICI (UNLP)
Institución
Universidad Nacional de La Plata
OAI Identificador
oai:sedici.unlp.edu.ar:10915/141720
Acceder
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oai_identifier_str oai:sedici.unlp.edu.ar:10915/141720
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network_name_str SEDICI (UNLP)
spelling Cytogenetic study of a tetraploid hybrid Zea diploperennis x Zea perennisMolina, María del CarmenIngeniería AgronómicaBiologíaZ. diploperennisZ. perenniscytological studyIt had been obtained a tetraploid hybrid (2n=40), crossing Z. diploperennis (2n=20) with Z. perennis (2n=40) by non disjunction of the gametes of Z. diploperennis.The cytological study indicated that there were no univalents and trivalents. Most of the chromosomes paired as bivalents and tetravalents preferently openring. The average of the counts in 214 cells in diakinesis was: 0.24I, 11.29II, 0.06III and 4.20IV. The average of chiasmata was 31.42 and at pachynema some translocations and inversions were observed.In anaphase in the 78% of the cells the same number of chromosomes migrated to each pole and in the left 22% different number of chromosomes migrated towards each pole or remained as lagging chromosomes. Only exceptionally chromatid bridges were observed.The fertility of the pollen is 56% with 80% of fertile seed being the progeny fertile and vigorous.Facultad de Ciencias Agrarias y Forestales1985info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionArticulohttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdf643-648http://sedici.unlp.edu.ar/handle/10915/141720enginfo:eu-repo/semantics/altIdentifier/issn/0011-4545info:eu-repo/semantics/altIdentifier/issn/1348-7019info:eu-repo/semantics/altIdentifier/doi/10.1508/cytologia.50.643info:eu-repo/semantics/openAccesshttp://creativecommons.org/licenses/by/4.0/Creative Commons Attribution 4.0 International (CC BY 4.0)reponame:SEDICI (UNLP)instname:Universidad Nacional de La Platainstacron:UNLP2025-09-29T11:32:11Zoai:sedici.unlp.edu.ar:10915/141720Institucionalhttp://sedici.unlp.edu.ar/Universidad públicaNo correspondehttp://sedici.unlp.edu.ar/oai/snrdalira@sedici.unlp.edu.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:13292025-09-29 11:32:12.129SEDICI (UNLP) - Universidad Nacional de La Platafalse
dc.title.none.fl_str_mv Cytogenetic study of a tetraploid hybrid Zea diploperennis x Zea perennis
title Cytogenetic study of a tetraploid hybrid Zea diploperennis x Zea perennis
spellingShingle Cytogenetic study of a tetraploid hybrid Zea diploperennis x Zea perennis
Molina, María del Carmen
Ingeniería Agronómica
Biología
Z. diploperennis
Z. perennis
cytological study
title_short Cytogenetic study of a tetraploid hybrid Zea diploperennis x Zea perennis
title_full Cytogenetic study of a tetraploid hybrid Zea diploperennis x Zea perennis
title_fullStr Cytogenetic study of a tetraploid hybrid Zea diploperennis x Zea perennis
title_full_unstemmed Cytogenetic study of a tetraploid hybrid Zea diploperennis x Zea perennis
title_sort Cytogenetic study of a tetraploid hybrid Zea diploperennis x Zea perennis
dc.creator.none.fl_str_mv Molina, María del Carmen
author Molina, María del Carmen
author_facet Molina, María del Carmen
author_role author
dc.subject.none.fl_str_mv Ingeniería Agronómica
Biología
Z. diploperennis
Z. perennis
cytological study
topic Ingeniería Agronómica
Biología
Z. diploperennis
Z. perennis
cytological study
dc.description.none.fl_txt_mv It had been obtained a tetraploid hybrid (2n=40), crossing Z. diploperennis (2n=20) with Z. perennis (2n=40) by non disjunction of the gametes of Z. diploperennis.The cytological study indicated that there were no univalents and trivalents. Most of the chromosomes paired as bivalents and tetravalents preferently openring. The average of the counts in 214 cells in diakinesis was: 0.24I, 11.29II, 0.06III and 4.20IV. The average of chiasmata was 31.42 and at pachynema some translocations and inversions were observed.In anaphase in the 78% of the cells the same number of chromosomes migrated to each pole and in the left 22% different number of chromosomes migrated towards each pole or remained as lagging chromosomes. Only exceptionally chromatid bridges were observed.The fertility of the pollen is 56% with 80% of fertile seed being the progeny fertile and vigorous.
Facultad de Ciencias Agrarias y Forestales
description It had been obtained a tetraploid hybrid (2n=40), crossing Z. diploperennis (2n=20) with Z. perennis (2n=40) by non disjunction of the gametes of Z. diploperennis.The cytological study indicated that there were no univalents and trivalents. Most of the chromosomes paired as bivalents and tetravalents preferently openring. The average of the counts in 214 cells in diakinesis was: 0.24I, 11.29II, 0.06III and 4.20IV. The average of chiasmata was 31.42 and at pachynema some translocations and inversions were observed.In anaphase in the 78% of the cells the same number of chromosomes migrated to each pole and in the left 22% different number of chromosomes migrated towards each pole or remained as lagging chromosomes. Only exceptionally chromatid bridges were observed.The fertility of the pollen is 56% with 80% of fertile seed being the progeny fertile and vigorous.
publishDate 1985
dc.date.none.fl_str_mv 1985
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
Articulo
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://sedici.unlp.edu.ar/handle/10915/141720
url http://sedici.unlp.edu.ar/handle/10915/141720
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/issn/0011-4545
info:eu-repo/semantics/altIdentifier/issn/1348-7019
info:eu-repo/semantics/altIdentifier/doi/10.1508/cytologia.50.643
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
http://creativecommons.org/licenses/by/4.0/
Creative Commons Attribution 4.0 International (CC BY 4.0)
eu_rights_str_mv openAccess
rights_invalid_str_mv http://creativecommons.org/licenses/by/4.0/
Creative Commons Attribution 4.0 International (CC BY 4.0)
dc.format.none.fl_str_mv application/pdf
643-648
dc.source.none.fl_str_mv reponame:SEDICI (UNLP)
instname:Universidad Nacional de La Plata
instacron:UNLP
reponame_str SEDICI (UNLP)
collection SEDICI (UNLP)
instname_str Universidad Nacional de La Plata
instacron_str UNLP
institution UNLP
repository.name.fl_str_mv SEDICI (UNLP) - Universidad Nacional de La Plata
repository.mail.fl_str_mv alira@sedici.unlp.edu.ar
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