perisperm

plant anatomy

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Last updated

July 1, 2026

Quick Summary

The perisperm is a nutritive tissue found in some plant seeds, derived from the nucellus and located outside the embryo sac. It is distinguished from the endosperm, which is another type of nutritive tissue that develops from double fertilization in flowering plants. In certain seeds, like those of coffee and beets, the perisperm serves as the primary source of nourishment for the developing embryo, either exclusively or in conjunction with the endosperm. This tissue plays a vital role in seed development and germination by providing essential nutrients.1234

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seed
Angiosperm seeds
…derived from the nucellus, the perisperm, as in coffee. Other seeds, such as those of beets, contain both perisperm and endosperm. The seed coat, or testa, is derived from the one or two protective integuments of the ovule. The ovary, in the simplest case, develops into a fruit. In many…
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…derived from the nucellus, the perisperm, as in coffee. Other seeds, such as those of beets, contain both perisperm and endosperm. The seed coat, or testa, is derived from the one or two protective integuments of the ovule. The ovary, in the simplest case, develops into a fruit. In many…
Read More