Taking best quality characters’ from different varieties for hybridization to make best hybrids to give best result in different climatic zone.
In every crop hybridization has been done by specialised breeder.
Hybrid plants are ones derived from matings between genetically distinct parents. Such matings are called crosses. Crosses often occur between plants classified as distinct species. Many hybrids are sterile, but many others are merely of reduced fertility and can, in fact, produce offspring. The level of fertility varies both with the cross in question and, for a given type of cross, from one individual hybrid to another. Some crosses produce hybrids just as fertile as their parents.