Metaphase-I analysis of a Triticum aestivum x T. monococcum hybrid by the C-banding technique |
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| Authors: | Juan M González Sylvie Bernard Michel Bernard |
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| Institution: | (1) Departmento de Biologiá Celular y Genética, Univ. Alcalá de Henares, 28871 Alcalá de Henares, Madrid, Spain;(2) INRA, Station d'Amélioration des Plantes, 63039 Clermont-Ferrand, Cedex, France |
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| Abstract: | Summary The meiotic pairing behaviour at metaphase I of a Triticum aestivum×Triticum monococcum hybrid has been studied by means of the C-banding technique to ascertain the homology between the chromosomes in the A genome of the two species. The technique allowed the A and B genome chromosomes and the 2D, 3D and 5D chromosomes to be identified. Differences in the level of chromosome pairing in the A genome were noted. The T. monococcum 4A chromosome did not pair with any of the T. aestivum chromosomes in any of the metaphase I cells analysed. Two reciprocal translocations between the 2B and 2D chromosomes on one side and the 2A and 3D on the other side have been identified. The usefulness of the C-banding technique in the study of chromosome homology among species related to wheat is discussed. |
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| Keywords: | A genome C-banding meiosis Triticum aestivum Triticum monococcum |
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