Hybrid

Hybrid (biology)

In biology, a hybrid is the offspring resulting from combining the qualities of two organisms of different varieties, subspecies, species or genera through sexual reproduction. Generally, it means that each cell has genetic material from two different organisms, whereas an individual where some cells are derived from a different organism is called a chimera. Hybrids are not always intermediates between their parents such as in blending inheritance, but can show hybrid vigor, sometimes growing larger or taller than either parent. The concept of a hybrid is interpreted differently in animal and plant breeding, where there is interest in the individual parentage. In genetics, attention is focused on the numbers of chromosomes. In taxonomy, a key question is how closely related the parent species must be for their offspring to be classified as a hybrid, since crosses between species within the same genera are often treated differently from crosses between more distantly related taxa.

Hybrid grape

Hybrid grapes are grape varieties that are the product of a crossing of two or more Vitis species. This is in contrast to crossings between grape varieties of the same species, typically Vitis vinifera, the European grapevine. Hybrid grapes are also referred to as inter-species crossings or "Modern Varieties." Due to their often excellent tolerance to powdery mildew, other fungal diseases, nematodes, and phylloxera, hybrid varieties have, to some extent, become a renewed focus for European breeding programs. The recently developed varieties are examples of newer hybrid grape varieties for European viticulturalists. Several North American breeding programs, such as those at Cornell and the University of Minnesota, focus exclusively on hybrid grapes, with active and successful programs, having created hundreds if not thousands of new varieties.

hybrid

Noun

1. Offspring resulting from cross-breeding different entities, e.g. two different species or two purebred parent strains.
2. Something of mixed origin or composition; often, a tool or technology that combines the benefits of formerly separate tools or technologies.

Adjective

1. Of or composed of mixed origin or composition.
2. Of a car, running on both fuel (gasoline or diesel) and electricity (battery or energy from the sun).