(in some seeds) a mass of nutritive material outside the embryo sac.
Example sentencesExamples
- The perisperm is present in abundance.
- In cucumber, muskmelon, and other seeds, a thin perisperm-endosperm envelope completely encloses the embryo.
- Scarification was accomplished by piercing the seed coat and scraping a small portion of the perisperm with a sterile dissecting needle.
- They were treated with 65% sulfuric acid for 10 min at room temperature to hydrolyse their impermeable waterproofing perisperm.
- Almost all of the seeds have popped along their long axis due to the swelling of the starchy perisperm during heating.