What is polyembryony and how can it be commercially exploited ?

Explanation

Occurrence of more than one embryo in a seed is called polyembryony.
In many citrus and Mango varieties, some of the nucellar cells surrounding the embryo sac start dividing, protrude into.the embryosac and’develop into embryos. In such species, each ovule contains many embryos.
Polyembryony plays a main role in plant breeding and horticulture. The plantlets obtained from these embryos are virus free has more vigour.
Hybrid varieties of several food and vegetable crops are being extensively cultivated. Cultivation of Hybrids has tremendously increased productivity.