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Guidance: DUS protocols for testing plant varieties

Animal Plant Health Agency

December 1
10:41 2023

If you have a new plant variety, it must be tested to make sure it is distinct, sufficiently uniform and stable (DUS) as part of the application process to:

DUS criteria

DUS testing checks your new plant variety is distinct, uniform and stable.

Distinct

A distinct plant variety has at least one important characteristic that is different from other varieties included in the national list.

Uniform

A uniform plant variety has individual plants that share the same important characteristics.

Stable

A stable plant variety remains unchanged after repeated propagation, for example, reproduction from seeds, cuttings, bulbs or other plant parts.

Get your variety tested

APHA will ask you to send your seed or plant material for testing as part of your application to add your variety to the national lists or for PBR. Theyll tell you how much to send and when.

Do not send plant material until APHA requests it.

Testing takes:

  • 1 year for ornamentals
  • 3 years for trees
  • 4 years for herbage varieties
  • 2 years for other species

Your variety might need more tests on parental species if youre registering hybrid varieties.

APHA will send you a copy of the test results.

DUS protocols

Read the DUS protocols for:

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