“A plant is to be considered an off-type if it can be clearly distinguished from the variety in the expression of any characteristic of the whole or part of the plant that is used in the testing of distinctness, taking into consideration the particular features of its propagation.”

References

UPOV, 2002. General introduction to the examination of distinctness, uniformity and stability and the development of harmonized descriptions of new varieties of plants. https://www.upov.int/export/sites/upov/resource/en/tg_1_3.pdf