Under the botanical nomenclature of the International Code of Nomenclature for Cultivated Plants (ICNCP), a cultivar group is any gathering of cultivars designated by common traits. Designated groups may include a group of yellow-flowering cultivars, a group of cultivars with variegated leaves, a group of cultivars resistant to a particular disease, etc. A cultivar may belong to more than one group (for example, it may be yellow-flowering, with variegated leaves and resistant to the disease at one and the same time).
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