Crossvariety

Crossvariety is a term used in plant breeding to denote an intentional cross between two distinct varieties of the same species. The aim is to combine desirable traits from both parent varieties, such as improved yield, taste, disease resistance, or adaptation to environmental conditions.

When two true-breeding varieties are crossed, the first-generation offspring (F1) commonly exhibit uniformity and may show hybrid vigor, though many crossvarieties are later bred to stabilize traits into a new cultivar. In seed labeling, the cross may be indicated as Variety A × Variety B.

Crossvarieties are especially common in crops such as corn, tomato, lettuce, and rice, where breeders seek consistent performance combined with favorable characteristics. Breeding programs must also manage challenges such as linkage drag, genetic incompatibilities, and the need for ongoing selection to maintain desired traits across generations.

Once stabilized through inbreeding and selection, the resulting plant line can be released as a new cultivar or variety. See also Hybrid (plant); Plant breeding; Cultivar.