F1 hybrid

F1 hybrid [ Genetics - Botany ]
Abbreviation: F1

Dictionary of botanic terminology - index of names

The first filial (= F1) generation of offspring plants derived by a cross-pollination between two compatible but genetically different parent. If each parent is truebred (homozygous), the F1 individuals resemble each other.

F1 hybrids (first-generation hybrid) derived from a cross between two homozygous cultivars (or from two unrelated population, species or genus) can have advantages, including the robust growth known as "hybrid vigour", homogeneity (A fairly uniform phenotype), greatest disease resistance and when the right inbreds are combined, the hybrid can explode with unimaginable improvements.
The F1 may have desired qualities of either or both parents. Seed saved from the cross-pollinated female fruit or plant is a F1 hybrid seed.
F1 hybrids involving different species are very often sterile.
Plant derived from cross-pollination among F1 hybrids ( called second filial generation or F2) are unpredictable and produce offspring unlike themselves. In addition the hybrid vigour is is usually suppressed in subsequent generations (Inbreeding depression).

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