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Effect of genetic background on trisomy in ryegrass

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Abstract

Six primary trisomics of ryegrass, Lolium perenne L., were studied in perennial and perennial x annual hybrid backgrounds. Chromosome association at meiotic metaphase I and chiasma number per cell of the individual trisomes did not differ in the two genetic backgrounds. Hybrid trisomies showed wider variation in morphology, and had higher pollen fertility than the perennial trisomics and disomics. — It is concluded that the transfer of perennial ryegrass chromosomes and segments into annual ryegrass can be accomplished without any serious consequence on the cytological stability of the reconstituted genome.

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Authors and Affiliations

  1. Max-Planck-Institut für Züchtungsforschung, Köln, Federal Republic of Germany

    E. G. M. Meijer

  2. Plant Breeding Department, Agricultural Institute, Carlow, Ireland

    B. S. Ahloowalia

  3. Department of Agricultural Botany, Faculty of Agriculture, University College, Dublin, Ireland

    P. L. Curran

Authors
  1. E. G. M. Meijer
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  2. B. S. Ahloowalia
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  3. P. L. Curran
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Meijer, E.G.M., Ahloowalia, B.S. & Curran, P.L. Effect of genetic background on trisomy in ryegrass. Chromosoma 84, 451–455 (1981). https://doi.org/10.1007/BF00286033

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  • DOI: https://doi.org/10.1007/BF00286033

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