noun
- Nutritive tissue in seeds that surrounds the embryo and endosperm, derived from the nucellus of the ovule.
Usage: botanical term; technical
Examples
- The perisperm in some seeds provides additional nutrients to support seedling growth.
- Botanists examine the perisperm to understand seed development and structure.
- In certain plant species, the perisperm persists in the mature seed coat.
- The perisperm is distinct from the endosperm in its developmental origin.
- Seeds with a prominent perisperm often show enhanced germination vigor.