The part of a seed that acts as a food store for the developing plant embryo, usually containing starch with protein and other nutrients.
- ‘Tobacco seeds accumulate oil and protein in the embryo, cellular endosperm and inner layer of the seed coat.’
- ‘Most of its volume is taken up by the starchy endosperm, where starch and storage proteins are accumulated.’
- ‘Thus the three seed components, embryo, endosperm and seed coat, are genetically distinct.’
- ‘Soluble proteins from endosperm and leaf tissues were used.’
- ‘Cereal grains, for example, store the bulk of their storage proteins in the starchy endosperm.’