| 词条 | Orbicule |
| 释义 |
Orbicules (syn. Ubisch bodies, con-peito grains) are small acellular structures of sporopollenin (known size range from < 1 µm to 15 µm, but usually sub-micrometre) that might occur on the inner tangential and radial walls of tapetal cells. Their function is unclear at this moment. Current consensus is that they are just a by-product of pollen wall sporopollenin synthesis. External links
4 : Plant morphology|Plant sexuality|Plant reproductive system|Pollination |
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