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Euphytica

, Volume 16, Issue 1, pp 49–60 | Cite as

Colchicine induced polyploids in ryegrass

  • B. S. Ahloowalia
Article

Abstract

Studies on induction, isolation and stabilization of tetraploids in Lolium perenne L. (2n=14) are reported. These investigations revealed that:
  1. 1.

    The different varieties of ryegrass responded differentially to colchicine treatment.

     
  2. 2.

    Colchicine was mutagenic in addition to doubling chromosome number in ryegrass.

     
  3. 3.

    A high incidence of mixoploidy was obtained following colchicine treatment, which interfered with the fertility of the C0 tetraploids. The tillers, selected cytologically for tetraploid purity, had a higher seed set and 100-grain weight than either the mother plant or the diploid variety.

     
  4. 4.

    In the C1 generation, obtained from the interpollination of pure tetraploid tillers, about 92 per cent plants were tetraploid (2n=28), 7 per cent aneuploid (2n=25, 26,27) and less than one per cent diploid.

     
  5. 5.

    There was no significant difference in the percentage recovery of the tetraploids from small and large seeds in the C1 generation.

     

Keywords

Colchicine Mother Plant Perennial Ryegrass Colchicine Treatment Tetraploid Plant 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© H. Veenman En Zonen N.V. 1967

Authors and Affiliations

  • B. S. Ahloowalia
    • 1
  1. 1.Plant Breeding DepartmentAgricultural InstituteOak Park, CarlowRepublic of Ireland

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