Submit a maintenance sample for maintaining vegetable varieties
The Board for Plant Varieties registers the maintainers of varieties registered in the National Variety Register (NRR). The Board is responsible for keeping the NRR up to date. De data regarding the maintenance of a variety is received by the Board from Naktuinbouw who are responsible for the inspection.
Submit a maintenance sample for maintaining vegetable varieties
Naktuinbouw performs the inspection of the maintenance of vegetable varieties.
A variety is correctly maintained if it is true to type. True to type means that the variety is still the same as described in the DUS variety description that was made when the variety was listed in the Netherlands. To perform the inspection of the maintenance, Naktuinbouw requires a maintenance sample in the first year after listing (i.e. registration in the NRR). Subsequently, a sample is requested once in every 5 years. Exceptions are the allium and corn crops. These are inspected once in every 4 years. The maintenance samples will be in a field trial and compared to the original variety description. Read more...
Bekijk ook
News item
Modification submission requirements French bean (dwarf and climbing beans)
In 2026 Naktuinbouw will start with the implementation of the UPOV Model 2 for DUS testing of bean applications.
It combines molecular thresholds (based on genetic marker distances) with phenotypic observations (based on morphological characteristics).
Model 2 does not replace morphological assessment; rather, it uses molecular data to optimize the DUS process and possibly to shorten it.
Under this model, the initial selection of similar varieties will be based on DNA analysis, followed by a 1st year with field morphological observations to ensure no varieties have been missed. If needed a 2nd year of examination will follow.
Uniformity will be assessed in the field.
