Patent ID: 8859853

Claim:
An artificial seed for maintaining an activity of differentiation of a plant cell or a plant tissue, wherein the artificial seed is formed of a seamless soft capsule with a structure of three layers, the structure of three layers consisting of an innermost layer, an inner layer covering the innermost layer, and an outer layer covering the inner layer, the innermost layer consists of the plant cell or the plant tissue and an aqueous liquid medium that contains a component to maintain an activity of differentiation of the plant cell or the plant tissue, the plant cell or the plant tissue is suspended in the aqueous liquid medium, the plant cell or the plant tissue is selected from the group consisting of adventitious embryos, adventitious buds, multiple shoots, shoot apices, growing points, protocorm-like bodies, adventitious roots, and capillary roots, the inner layer is formed by an inner membrane consisting essentially of hardened oil that is solid at room temperature, the inner membrane is to prevent from evaporating water of the innermost layer, and the outer layer is formed of a biodegradable outer membrane having an oxygen barrier property after dried.