Is maize B chromosome preferential fertilization controlled by a single gene?

Autores
Chiavarino, Amílcar Mauricio; González Sánchez, Mónica; Poggio, Lidia; Puertas, María J.; Rosato, Marcela; Rosi, Pablo
Año de publicación
2001
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
In previous work, genotypes for high and low B chromosome transmission rate were selected from a native race of maize. It was demonstrated that the B transmission is genetically controlled. The present work reports the fourth and fifth generations of selection and the F1 hybrids between the lines. The native B is characterized by a constant behaviour, with normal meiosis and nondisjunction in 100% of postmeiotic mitosis. It is concluded that genetic variation for B transmission between the selected lines is due to the preferential fertilization process. The F1 hybrids show intermediate B transmission rate between the lines. They are uniform, the variance of the selected character being one order of magnitude lower than that of the native population. In addition, 0B×2B and 2B×2B crosses were made to study the effect of the presence of B chromosomes in the female parent, resulting in non-significant differences. Several crosses were made both in Buenos Aires and in Madrid to compare the possible environmental effect, but significant differences were not found. Our results are consistent with the hypothesis of a single major gene controlling B transmission rate in maize, which acts in the egg cell at the haploid level during fertilization. It is also hypothesized that maize Bs use the normal maize fertilization process to promote their own transmission.
Facultad de Ciencias Agrarias y Forestales
Materia
Ciencias Exactas
Ciencias Agrarias
B-chromosomes
Maize
Preferential fertilization
Zea mays
Nivel de accesibilidad
acceso abierto
Condiciones de uso
http://creativecommons.org/licenses/by-nc-sa/4.0/
Repositorio
SEDICI (UNLP)
Institución
Universidad Nacional de La Plata
OAI Identificador
oai:sedici.unlp.edu.ar:10915/84773
Acceder
id SEDICI_240a395bea447fa36c37d0795c2801e8
oai_identifier_str oai:sedici.unlp.edu.ar:10915/84773
network_acronym_str SEDICI
repository_id_str 1329
network_name_str SEDICI (UNLP)
spelling Is maize B chromosome preferential fertilization controlled by a single gene?Chiavarino, Amílcar MauricioGonzález Sánchez, MónicaPoggio, LidiaPuertas, María J.Rosato, MarcelaRosi, PabloCiencias ExactasCiencias AgrariasB-chromosomesMaizePreferential fertilizationZea maysIn previous work, genotypes for high and low B chromosome transmission rate were selected from a native race of maize. It was demonstrated that the B transmission is genetically controlled. The present work reports the fourth and fifth generations of selection and the F<SUB>1</SUB> hybrids between the lines. The native B is characterized by a constant behaviour, with normal meiosis and nondisjunction in 100% of postmeiotic mitosis. It is concluded that genetic variation for B transmission between the selected lines is due to the preferential fertilization process. The F<SUB>1</SUB> hybrids show intermediate B transmission rate between the lines. They are uniform, the variance of the selected character being one order of magnitude lower than that of the native population. In addition, 0B×2B and 2B×2B crosses were made to study the effect of the presence of B chromosomes in the female parent, resulting in non-significant differences. Several crosses were made both in Buenos Aires and in Madrid to compare the possible environmental effect, but significant differences were not found. Our results are consistent with the hypothesis of a single major gene controlling B transmission rate in maize, which acts in the egg cell at the haploid level during fertilization. It is also hypothesized that maize Bs use the normal maize fertilization process to promote their own transmission.Facultad de Ciencias Agrarias y Forestales2001info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionArticulohttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdf743-748http://sedici.unlp.edu.ar/handle/10915/84773enginfo:eu-repo/semantics/altIdentifier/issn/0018-067Xinfo:eu-repo/semantics/altIdentifier/doi/10.1046/j.1365-2540.2001.00894.xinfo:eu-repo/semantics/openAccesshttp://creativecommons.org/licenses/by-nc-sa/4.0/Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)reponame:SEDICI (UNLP)instname:Universidad Nacional de La Platainstacron:UNLP2025-12-23T11:18:28Zoai:sedici.unlp.edu.ar:10915/84773Institucionalhttp://sedici.unlp.edu.ar/Universidad públicaNo correspondehttp://sedici.unlp.edu.ar/oai/snrdalira@sedici.unlp.edu.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:13292025-12-23 11:18:29.132SEDICI (UNLP) - Universidad Nacional de La Platafalse
dc.title.none.fl_str_mv Is maize B chromosome preferential fertilization controlled by a single gene?
title Is maize B chromosome preferential fertilization controlled by a single gene?
spellingShingle Is maize B chromosome preferential fertilization controlled by a single gene?
Chiavarino, Amílcar Mauricio
Ciencias Exactas
Ciencias Agrarias
B-chromosomes
Maize
Preferential fertilization
Zea mays
title_short Is maize B chromosome preferential fertilization controlled by a single gene?
title_full Is maize B chromosome preferential fertilization controlled by a single gene?
title_fullStr Is maize B chromosome preferential fertilization controlled by a single gene?
title_full_unstemmed Is maize B chromosome preferential fertilization controlled by a single gene?
title_sort Is maize B chromosome preferential fertilization controlled by a single gene?
dc.creator.none.fl_str_mv Chiavarino, Amílcar Mauricio
González Sánchez, Mónica
Poggio, Lidia
Puertas, María J.
Rosato, Marcela
Rosi, Pablo
author Chiavarino, Amílcar Mauricio
author_facet Chiavarino, Amílcar Mauricio
González Sánchez, Mónica
Poggio, Lidia
Puertas, María J.
Rosato, Marcela
Rosi, Pablo
author_role author
author2 González Sánchez, Mónica
Poggio, Lidia
Puertas, María J.
Rosato, Marcela
Rosi, Pablo
author2_role author
author
author
author
author
dc.subject.none.fl_str_mv Ciencias Exactas
Ciencias Agrarias
B-chromosomes
Maize
Preferential fertilization
Zea mays
topic Ciencias Exactas
Ciencias Agrarias
B-chromosomes
Maize
Preferential fertilization
Zea mays
dc.description.none.fl_txt_mv In previous work, genotypes for high and low B chromosome transmission rate were selected from a native race of maize. It was demonstrated that the B transmission is genetically controlled. The present work reports the fourth and fifth generations of selection and the F<SUB>1</SUB> hybrids between the lines. The native B is characterized by a constant behaviour, with normal meiosis and nondisjunction in 100% of postmeiotic mitosis. It is concluded that genetic variation for B transmission between the selected lines is due to the preferential fertilization process. The F<SUB>1</SUB> hybrids show intermediate B transmission rate between the lines. They are uniform, the variance of the selected character being one order of magnitude lower than that of the native population. In addition, 0B×2B and 2B×2B crosses were made to study the effect of the presence of B chromosomes in the female parent, resulting in non-significant differences. Several crosses were made both in Buenos Aires and in Madrid to compare the possible environmental effect, but significant differences were not found. Our results are consistent with the hypothesis of a single major gene controlling B transmission rate in maize, which acts in the egg cell at the haploid level during fertilization. It is also hypothesized that maize Bs use the normal maize fertilization process to promote their own transmission.
Facultad de Ciencias Agrarias y Forestales
description In previous work, genotypes for high and low B chromosome transmission rate were selected from a native race of maize. It was demonstrated that the B transmission is genetically controlled. The present work reports the fourth and fifth generations of selection and the F<SUB>1</SUB> hybrids between the lines. The native B is characterized by a constant behaviour, with normal meiosis and nondisjunction in 100% of postmeiotic mitosis. It is concluded that genetic variation for B transmission between the selected lines is due to the preferential fertilization process. The F<SUB>1</SUB> hybrids show intermediate B transmission rate between the lines. They are uniform, the variance of the selected character being one order of magnitude lower than that of the native population. In addition, 0B×2B and 2B×2B crosses were made to study the effect of the presence of B chromosomes in the female parent, resulting in non-significant differences. Several crosses were made both in Buenos Aires and in Madrid to compare the possible environmental effect, but significant differences were not found. Our results are consistent with the hypothesis of a single major gene controlling B transmission rate in maize, which acts in the egg cell at the haploid level during fertilization. It is also hypothesized that maize Bs use the normal maize fertilization process to promote their own transmission.
publishDate 2001
dc.date.none.fl_str_mv 2001
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/10915/84773
url http://sedici.unlp.edu.ar/handle/10915/84773
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/issn/0018-067X
info:eu-repo/semantics/altIdentifier/doi/10.1046/j.1365-2540.2001.00894.x
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
http://creativecommons.org/licenses/by-nc-sa/4.0/
Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)
eu_rights_str_mv openAccess
rights_invalid_str_mv http://creativecommons.org/licenses/by-nc-sa/4.0/
Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)
dc.format.none.fl_str_mv application/pdf
743-748
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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score 12.952241

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