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Modern Concepts & Developments in Agronomy

Registered Crop Cultivars Composed of Multiple Biotypes: What About “DUS” rules?

  • Open or CloseE Metakovsky1, VA Melnik2, L Pascual1, and CW Wrigley3*

    1Unit of Genetics, Department of Biotechnology-Plant Biology, Universidad Politecnica de Madrid, Madrid 28040, Spain

    2Vavilov Institute of General Genetics Academy of Sciences RAN, Moscow 119991, Russia

    3QAAFI, University of Queensland, Brisbane, QLD 4072, Australia

    *Corresponding author:CW Wrigley, QAAFI, University of Queensland, Brisbane, QLD 4072, Australia

Submission: August 18, 2020;Published: September 01, 2020

DOI: 10.31031/MCDA.2020.07.000658

ISSN: 2637-7659
Volume7 Issue2


To be officially registered and therefore to acquire the right to be called “a cultivar”, any newly bred common wheat genotype must pass a series of tests to confirm that it fits three requirements (called “DUS”-it must be genetically Distinct, Uniform and Stable). One of the more important of these requirements is that the candidate cultivar should be composed of genotypically identical homozygous individuals (seeds, plants). Thus, SW genotypic uniformity is one of the more important definitions of the officially registered cultivar [1]. The DUS procedure provides a basis for protecting the intellectual property of the breeder for a given cultivar [1-3].

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