Table 1.
Summary of observed grain characters in mature selected species of Brachypodium and core pooids
| Species | Grain profile | Crease | Cavitya | Persistent nucellar epidermisa | Peripheral aleurone– cell layers | Modified aleurone –vital staina | Starch granulea |
|---|---|---|---|---|---|---|---|
| Brachypodium distachyon | Flat | Open | n | y | 1–4 irregular | y | Simple |
| Brachypodium stacei | Flat | Open | n | y | 1–4 irregular | y | nd |
| Bromus mollis | Flat | Open | n | y | 1 | y | Simple |
| Bromus sterilis | Flat | Open lobed | n | y | 3 | y~ | Simple |
| Elymus repens | Flat | Open | n | n | 1 | n~ | Bimodal |
| Hordeum vulgare | Round | Closed | y | n | 3 | n | Bimodal |
| Hordeum murineum | Round | Closed | y | n | 1 | nd | Bimodal |
| Triticum aestivum | Round | Closed | y | n | 1 | n | Bimodal |
| Triticum uratu | Narrow | Closed | y | n | 1 | n | Bimodal |
| Triticum speltoides | Flat | Closed | y | n | 1 | n~ | Bimodal |
| Triticu tauschii | Flat | Closed | y | n | 1 | n | Bimodal |
| Triticum dicoccoides | Round | Closed | y | n | 1 | n | Bimodal |
| Avena sativa | Round | Closed | y | n | 1 | y | Compound |
| Avena fatua | Round | Closed | y | n | 1 | y | Compound |
| Lolium perenne | Flat | Open | n | n | 1 | y | compound |
| Festuca pratensis | Flat | Open | n | n | 1 irregular | n~ | Compound/ simple |
a nd, not determined; n, not present; y, present; al, aleurone; ~ typical TZ staining pattern.