Meiotic pairing in the hybrid (<i>Zea diploperennis</i> × <i>Zea perennis</i>) × <i>Zea mays</i> and its reciprocal

Autores
Molina, María del Carmen; García, María Dina; López, César Gabriel; Moreno Ferrero, Vicente
Año de publicación
2004
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Genomic formulae, fertility, chromosome pairing, and the cryptic intergenomic pairing (induced by using diluted colchicine solution) were analysed in the tri-hybrid (MDP), obtained by crossing DP40 (2n=40, which was inferred in previous studies to have originated from the fusion of an unreduced gamete of Zea diploperennis with a normal gamete of Z. perennis) with the maize inbred line Zm40 (2n=40). MDP (2n=40) showed a higher fertility (90% of the seeds are viable) than Zm40 (60%) and DP40 (80%). A regular migration of 20 chromosomes to each pole occurred in 92% of the cells in anaphase I, while bridges were observed in the other 8% of the cells. When Zm40 was used as female of the crossing (Zm40 × DP40), ears were similar to corn. Conversely, ears resembled those of the wild species when cytoplasm was donoured by Zd. Then, it can be stated the existence of cytoplasmic influence on MDP ear type. MDP had almost no I or III, with an average of 0.04I + 10.90II + 0.01III + 4.50IV. The most frequent meiotic configuration was 10II + 5IV (43.93% of the cells). On average, 33.81 chiasmata/cell were observed (17.34, 0.05 and 16.42 average numbers of chiasmata/cell in bivalents, trivalents and tetravalents, respectively). It can be inferred that the 5IV were the product of homoeologous chromosome pairing of A genomes from the three species. On the other hand, the 10II configuration suggests separate pairing of the 5 homologous B chromosomes from maize and the 5 homoeologous B chromosomes from Zp and Zd.
Facultad de Ciencias Agrarias y Forestales
Materia
Ciencias Agrarias
genomic formulae
fertility
chromosome pairing
cryptic intergenomic pairing
chromosomes
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:10915/128535

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repository_id_str 1329
network_name_str SEDICI (UNLP)
spelling Meiotic pairing in the hybrid (<i>Zea diploperennis</i> × <i>Zea perennis</i>) × <i>Zea mays</i> and its reciprocalMolina, María del CarmenGarcía, María DinaLópez, César GabrielMoreno Ferrero, VicenteCiencias Agrariasgenomic formulaefertilitychromosome pairingcryptic intergenomic pairingchromosomesGenomic formulae, fertility, chromosome pairing, and the cryptic intergenomic pairing (induced by using diluted colchicine solution) were analysed in the tri-hybrid (MDP), obtained by crossing DP40 (2n=40, which was inferred in previous studies to have originated from the fusion of an unreduced gamete of <i>Zea diploperennis</i> with a normal gamete of <i>Z. perennis</i>) with the maize inbred line Zm40 (2n=40). MDP (2n=40) showed a higher fertility (90% of the seeds are viable) than Zm40 (60%) and DP40 (80%). A regular migration of 20 chromosomes to each pole occurred in 92% of the cells in anaphase I, while bridges were observed in the other 8% of the cells. When Zm40 was used as female of the crossing (Zm40 × DP40), ears were similar to corn. Conversely, ears resembled those of the wild species when cytoplasm was donoured by Zd. Then, it can be stated the existence of cytoplasmic influence on MDP ear type. MDP had almost no I or III, with an average of 0.04I + 10.90II + 0.01III + 4.50IV. The most frequent meiotic configuration was 10II + 5IV (43.93% of the cells). On average, 33.81 chiasmata/cell were observed (17.34, 0.05 and 16.42 average numbers of chiasmata/cell in bivalents, trivalents and tetravalents, respectively). It can be inferred that the 5IV were the product of homoeologous chromosome pairing of A genomes from the three species. On the other hand, the 10II configuration suggests separate pairing of the 5 homologous B chromosomes from maize and the 5 homoeologous B chromosomes from Zp and Zd.Facultad de Ciencias Agrarias y Forestales2004-11info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionArticulohttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdf135-141http://sedici.unlp.edu.ar/handle/10915/128535enginfo:eu-repo/semantics/altIdentifier/issn/0018-0661info:eu-repo/semantics/altIdentifier/issn/1601-5223info:eu-repo/semantics/altIdentifier/pmid/15660974info:eu-repo/semantics/altIdentifier/doi/10.1111/j.1601-5223.2004.01758.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:UNLP2025-09-29T11:31:03Zoai:sedici.unlp.edu.ar:10915/128535Institucionalhttp://sedici.unlp.edu.ar/Universidad públicaNo correspondehttp://sedici.unlp.edu.ar/oai/snrdalira@sedici.unlp.edu.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:13292025-09-29 11:31:03.862SEDICI (UNLP) - Universidad Nacional de La Platafalse
dc.title.none.fl_str_mv Meiotic pairing in the hybrid (<i>Zea diploperennis</i> × <i>Zea perennis</i>) × <i>Zea mays</i> and its reciprocal
title Meiotic pairing in the hybrid (<i>Zea diploperennis</i> × <i>Zea perennis</i>) × <i>Zea mays</i> and its reciprocal
spellingShingle Meiotic pairing in the hybrid (<i>Zea diploperennis</i> × <i>Zea perennis</i>) × <i>Zea mays</i> and its reciprocal
Molina, María del Carmen
Ciencias Agrarias
genomic formulae
fertility
chromosome pairing
cryptic intergenomic pairing
chromosomes
title_short Meiotic pairing in the hybrid (<i>Zea diploperennis</i> × <i>Zea perennis</i>) × <i>Zea mays</i> and its reciprocal
title_full Meiotic pairing in the hybrid (<i>Zea diploperennis</i> × <i>Zea perennis</i>) × <i>Zea mays</i> and its reciprocal
title_fullStr Meiotic pairing in the hybrid (<i>Zea diploperennis</i> × <i>Zea perennis</i>) × <i>Zea mays</i> and its reciprocal
title_full_unstemmed Meiotic pairing in the hybrid (<i>Zea diploperennis</i> × <i>Zea perennis</i>) × <i>Zea mays</i> and its reciprocal
title_sort Meiotic pairing in the hybrid (<i>Zea diploperennis</i> × <i>Zea perennis</i>) × <i>Zea mays</i> and its reciprocal
dc.creator.none.fl_str_mv Molina, María del Carmen
García, María Dina
López, César Gabriel
Moreno Ferrero, Vicente
author Molina, María del Carmen
author_facet Molina, María del Carmen
García, María Dina
López, César Gabriel
Moreno Ferrero, Vicente
author_role author
author2 García, María Dina
López, César Gabriel
Moreno Ferrero, Vicente
author2_role author
author
author
dc.subject.none.fl_str_mv Ciencias Agrarias
genomic formulae
fertility
chromosome pairing
cryptic intergenomic pairing
chromosomes
topic Ciencias Agrarias
genomic formulae
fertility
chromosome pairing
cryptic intergenomic pairing
chromosomes
dc.description.none.fl_txt_mv Genomic formulae, fertility, chromosome pairing, and the cryptic intergenomic pairing (induced by using diluted colchicine solution) were analysed in the tri-hybrid (MDP), obtained by crossing DP40 (2n=40, which was inferred in previous studies to have originated from the fusion of an unreduced gamete of <i>Zea diploperennis</i> with a normal gamete of <i>Z. perennis</i>) with the maize inbred line Zm40 (2n=40). MDP (2n=40) showed a higher fertility (90% of the seeds are viable) than Zm40 (60%) and DP40 (80%). A regular migration of 20 chromosomes to each pole occurred in 92% of the cells in anaphase I, while bridges were observed in the other 8% of the cells. When Zm40 was used as female of the crossing (Zm40 × DP40), ears were similar to corn. Conversely, ears resembled those of the wild species when cytoplasm was donoured by Zd. Then, it can be stated the existence of cytoplasmic influence on MDP ear type. MDP had almost no I or III, with an average of 0.04I + 10.90II + 0.01III + 4.50IV. The most frequent meiotic configuration was 10II + 5IV (43.93% of the cells). On average, 33.81 chiasmata/cell were observed (17.34, 0.05 and 16.42 average numbers of chiasmata/cell in bivalents, trivalents and tetravalents, respectively). It can be inferred that the 5IV were the product of homoeologous chromosome pairing of A genomes from the three species. On the other hand, the 10II configuration suggests separate pairing of the 5 homologous B chromosomes from maize and the 5 homoeologous B chromosomes from Zp and Zd.
Facultad de Ciencias Agrarias y Forestales
description Genomic formulae, fertility, chromosome pairing, and the cryptic intergenomic pairing (induced by using diluted colchicine solution) were analysed in the tri-hybrid (MDP), obtained by crossing DP40 (2n=40, which was inferred in previous studies to have originated from the fusion of an unreduced gamete of <i>Zea diploperennis</i> with a normal gamete of <i>Z. perennis</i>) with the maize inbred line Zm40 (2n=40). MDP (2n=40) showed a higher fertility (90% of the seeds are viable) than Zm40 (60%) and DP40 (80%). A regular migration of 20 chromosomes to each pole occurred in 92% of the cells in anaphase I, while bridges were observed in the other 8% of the cells. When Zm40 was used as female of the crossing (Zm40 × DP40), ears were similar to corn. Conversely, ears resembled those of the wild species when cytoplasm was donoured by Zd. Then, it can be stated the existence of cytoplasmic influence on MDP ear type. MDP had almost no I or III, with an average of 0.04I + 10.90II + 0.01III + 4.50IV. The most frequent meiotic configuration was 10II + 5IV (43.93% of the cells). On average, 33.81 chiasmata/cell were observed (17.34, 0.05 and 16.42 average numbers of chiasmata/cell in bivalents, trivalents and tetravalents, respectively). It can be inferred that the 5IV were the product of homoeologous chromosome pairing of A genomes from the three species. On the other hand, the 10II configuration suggests separate pairing of the 5 homologous B chromosomes from maize and the 5 homoeologous B chromosomes from Zp and Zd.
publishDate 2004
dc.date.none.fl_str_mv 2004-11
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
Articulo
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info:ar-repo/semantics/articulo
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://sedici.unlp.edu.ar/handle/10915/128535
url http://sedici.unlp.edu.ar/handle/10915/128535
dc.language.none.fl_str_mv eng
language eng
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info:eu-repo/semantics/altIdentifier/issn/1601-5223
info:eu-repo/semantics/altIdentifier/pmid/15660974
info:eu-repo/semantics/altIdentifier/doi/10.1111/j.1601-5223.2004.01758.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
135-141
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