High temperature effect of some bisaccate gymnosperm pollen grains
The qualitative and quantitative secondary alterations of the pollen grains of Pinus silvestris, Pinus mugo and Picea glauca were investigated. The pollen grains were heated at 200°C during different lengths of time. Peculiar attention was payed to the nomenclature of the light microscopical morphol...
Elmentve itt :
| Szerzők: | |
|---|---|
| Dokumentumtípus: | Cikk |
| Megjelent: |
1992
|
| Sorozat: | Plant cell biology and development
3 |
| Kulcsszavak: | Palinológia, Paleobotanika, Sejtbiológia - molekuláris |
| Tárgyszavak: | |
| Online Access: | http://acta.bibl.u-szeged.hu/47778 |
| Tartalmi kivonat: | The qualitative and quantitative secondary alterations of the pollen grains of Pinus silvestris, Pinus mugo and Picea glauca were investigated. The pollen grains were heated at 200°C during different lengths of time. Peculiar attention was payed to the nomenclature of the light microscopical morphology of the bisaccate pollen grains. The high temperature effect damages the sacci. After a long length of time heating the pollen grains lost the bladders, and these secondary altered forms are similar to early sulcate fossil taxa, such as Bennettitaceaeacuminella, etc. The alterations in the size are evaluated by the corpus and the saccus. |
|---|---|
| Terjedelem/Fizikai jellemzők: | 14-37 |
| ISSN: | 0866-5443 |