Culture of a mature or immature embryo of plants is called embryo culture. Embryo culture is used to induce germination of the mature embryo and for development of an immature embryo. When an embryo develops from somatic cells, it is called the somatic embryo.
It can be haploid or diploid depending upon the somatic cells from which it develops. The normal embryo is formed from the zygote. This is diploid and is formed by the fusion of male and female gametes
