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Abstract:

The morphological and cytogenetic features of the natural and artificial hybrids between tetraploid H. jubatum (2n=28) and hexaploid H. parodii (2n=42) have been studied. The hybrids, which were pentaploid, approached in quantitative morphological traits the parental species which contributed a higher number of genomes (H. parodii). The meiosis was highly irregular and variable. The average cell had about half of its chromosomes as univalents, slightly less than half were forming bivalents and the few remaining, multivalent associations (III, IV, very occasionally V). Electrophoresis of seed proteins revealed that homology of fractions in both parental species is not high (coefficient of similarity=47.82%). Chromosome pairing probably results from both allo- and autosyndesis. In contrast to the not too close phylogenetic relation of both species as revealed by morphology, chromosome behaviour in the hybrid and protein homology, the crossability of both species is rather high. © 1975, Japan Mendel Society, International Society of Cytology. All rights reserved.

Registro:

Documento: Artículo
Título:Natural Hybridization Between Hordeum Parodii and H. Jubatum: A Morphological, Cytogenetic and Protein Electrophoretic Study
Autor:Hunziker, J.H.; Naranio, C.A.; Andrada, A.B.; Itria, C.; Costas, M.
Filiación:Departamento de Ciencias Biologicas, Facultad de Ciencias Exactas y Naturales, I. Güiraldes 2620, Buenos Aires, Suc. 28, Argentina
Cátedra de Genética, Facultad de Agronomía y Zootecnia, Universidad de Tucumán, Argentina
Centro de Investigations de Recursos Naturales, Instituto Nacional de Tecnología Agropecuaria, Castelar, Prov. Buenos Aires, Argentina
Department of Botany, University of California, Berkeley, Cal, United States
Año:1975
Volumen:40
Página de inicio:649
Página de fin:662
DOI: http://dx.doi.org/10.1508/cytologia.40.649
Título revista:CYTOLOGIA
Título revista abreviado:Cytologia
ISSN:00114545
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00114545_v40_n_p649_Hunziker

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Citas:

---------- APA ----------
Hunziker, J.H., Naranio, C.A., Andrada, A.B., Itria, C. & Costas, M. (1975) . Natural Hybridization Between Hordeum Parodii and H. Jubatum: A Morphological, Cytogenetic and Protein Electrophoretic Study. CYTOLOGIA, 40, 649-662.
http://dx.doi.org/10.1508/cytologia.40.649
---------- CHICAGO ----------
Hunziker, J.H., Naranio, C.A., Andrada, A.B., Itria, C., Costas, M. "Natural Hybridization Between Hordeum Parodii and H. Jubatum: A Morphological, Cytogenetic and Protein Electrophoretic Study" . CYTOLOGIA 40 (1975) : 649-662.
http://dx.doi.org/10.1508/cytologia.40.649
---------- MLA ----------
Hunziker, J.H., Naranio, C.A., Andrada, A.B., Itria, C., Costas, M. "Natural Hybridization Between Hordeum Parodii and H. Jubatum: A Morphological, Cytogenetic and Protein Electrophoretic Study" . CYTOLOGIA, vol. 40, 1975, pp. 649-662.
http://dx.doi.org/10.1508/cytologia.40.649
---------- VANCOUVER ----------
Hunziker, J.H., Naranio, C.A., Andrada, A.B., Itria, C., Costas, M. Natural Hybridization Between Hordeum Parodii and H. Jubatum: A Morphological, Cytogenetic and Protein Electrophoretic Study. Cytologia. 1975;40:649-662.
http://dx.doi.org/10.1508/cytologia.40.649