Aseptic isolation of embryos at different developmental stages from ovules, immature seeds, polyembryonic seeds either inviable or abortive is called embryo culture. In vitro embryo culture is used to regenerate healthy plants from non-viable embryos, to overcome seed dormancy, to obtain rare and novel hybrids, propagate rare plants, and raise haploid plants. It is used for recovering hybrids of several economically important plants like ground nut, cotton, flax, rice, barley, and tomato. This is because, hybrid embryos from inter-generic and inter-specific crosses result in sterile seeds and extensive use of embryo rescue may be made using embryo culture techniques.