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dc.date.accessioned 2019-10-30T15:08:34Z
dc.date.available 2019-10-30T15:08:34Z
dc.date.issued 2001
dc.identifier.uri http://sedici.unlp.edu.ar/handle/10915/84380
dc.description.abstract The aim of this study was to analyse phenotype and cytogenetic behaviour of Zea mays ssp. mays and Zea mays ssp. parviglumis (Zpa) hybrids with different ploidy levels. Maize 2n=20 (Zm20) and Zpa hybrid plants (MPa20) were obtained naturally, they showed regular meiosis and fertile progeny (+80%). Otherwise, maize 2n=40 (Zm40) and Zpa hybrids (MPa30) were obtained by embryo rescue, they showed irregular meiosis and sterile progeny (0-8%). Meiotic configurations more frequently observed in the species and the hybrids were: Zm20 (10II); Zm40 (3.24II+8.34IV); Zpa (0.46I+9.76II); MPa20 (0.40I+9.54II+0.05III+0.65IV); MPa30 (5.97I+5.93II+4.05III). After colchicine treatment the number of IV increased in Zm20, Zpa and MPa20 and 10III were observed MPa30, because of homoeologous chromosomes pairing. In conclusion, Zm20 (AmAm BmBm) and Zpa (ApaApa BpaBpa) are allotetraploids with 2 homoeologous genomes. Whilst in the hybrids, the homoeologous genomes A pair in all cases, genomes B only do if their homologous competing during pairing, does not exist except in colchicine-treated plants which also show homoeologous genomes B pairing. en
dc.format.extent 189-196 es
dc.language en es
dc.subject Colchicine es
dc.subject Embryo rescue es
dc.subject Genomic formulae es
dc.subject Incompatible crosses es
dc.subject Maize hybrids es
dc.subject Ploidy level es
dc.subject Somatic embryogenesis es
dc.subject Zea es
dc.title Ploidy levels affect phenotype and cytogenetic traits in Zea mays ssp. mays (2n=20 or 40) and Zea mays ssp. parviglumis hybrids en
dc.type Articulo es
sedici.identifier.other doi:10.1508/cytologia.66.189 es
sedici.identifier.other eid:2-s2.0-0034928047 es
sedici.identifier.issn 0011-4545 es
sedici.creator.person Molina, María del Carmen es
sedici.creator.person García, María Dina es
sedici.subject.materias Ciencias Agrarias es
sedici.description.fulltext true es
mods.originInfo.place Facultad de Ciencias Agrarias y Forestales es
sedici.subtype Articulo es
sedici.rights.license Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)
sedici.rights.uri http://creativecommons.org/licenses/by-nc-sa/4.0/
sedici.description.peerReview peer-review es
sedici.relation.journalTitle Cytologia es
sedici.relation.journalVolumeAndIssue vol. 66, no. 2 es
sedici.rights.sherpa * RoMEO: gray* Pre-print del autor: unknown* Post-print del autor: unknown* Versión de editor/PDF:unknown* Condiciones:>>Las políticas de este editor no han sido verificadas por RoMEO.>>Contacte por favor con la editorial para mayor información si es necesaria* Link a Sherpa: http://sherpa.ac.uk/romeo/issn/0011-4545/es/


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Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0) Excepto donde se diga explícitamente, este item se publica bajo la siguiente licencia Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)