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Colchicine induced asynapsis and c-meiosis in pollen mother cells of cultivated anthers of rye

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Abstract

Rye anthers were cultured in medium with colchicine for periods of 12–24 h. Unaffected PMCs showed normal meiotic pairing in the same anthers in which other PMCs showed several degrees of asynapsis (or desynapsis), c-meiosis or anaphase irregularities. Pairing was affected only in cells which were at mid zygotene at the time of treatment initiation. Chiasma terminalization and release was possible in the absence of a functional spindle. Possibly, spindle function is more sensitive to colchicine than pairing. Variation within anthers can be adscribed to gradients in stage and development. The possibility of differences in penetration of colchicine must be recognized.

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Authors and Affiliations

  1. Departamento de Genética, Facultad de Biología, Universidad Complutense, Madrid-3, Spain

    A. de la Peña & M. J. Puertas

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  1. A. de la Peña
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  2. M. J. Puertas
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de la Peña, A., Puertas, M.J. Colchicine induced asynapsis and c-meiosis in pollen mother cells of cultivated anthers of rye. Chromosoma 68, 261–267 (1978). https://doi.org/10.1007/BF00335420

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  • DOI: https://doi.org/10.1007/BF00335420

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