| Tobacco seeds accumulate oil and protein in the embryo, cellular endosperm and inner layer of the seed coat. |
| The layer between seed coat and cotyledon probably includes the wall of the embryo sac. |
| Scarification was accomplished by piercing the seed coat and scraping a small portion of the perisperm with a sterile dissecting needle. |
| Our study of the anatomy and histochemistry of the seed coat has identified a number of potential dormancy mechanisms. |
| In general, the innermost layer of the seed coat of legumes consists of irregularly shaped cells with large intracellular spaces. |
| A seed was regarded as germinated when the radicle protruded through the seed coat. |
