X-ray effect on the ultrastructure of the pollen grains of Pinus griffithii McCLELL
The transmission electronmicroscopical results of X-ray irradiated pollen grains of Pinus griffithii MCCLELL pollen grains are presented in this paper. Irradiation with CuKa X-ray, at 35 KV, 20 mA, during 5', 15' 35' and 60'. The sporopollenin biopolymer system is resistant to ir...
Elmentve itt :
| Szerzők: | |
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| Dokumentumtípus: | Cikk |
| Megjelent: |
1998
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| Sorozat: | Plant cell biology and development
9 |
| Kulcsszavak: | Palinológia, Paleobotanika, Sejtbiológia - molekuláris - himalájai selyemfenyő |
| Tárgyszavak: | |
| Online Access: | http://acta.bibl.u-szeged.hu/47848 |
| Tartalmi kivonat: | The transmission electronmicroscopical results of X-ray irradiated pollen grains of Pinus griffithii MCCLELL pollen grains are presented in this paper. Irradiation with CuKa X-ray, at 35 KV, 20 mA, during 5', 15' 35' and 60'. The sporopollenin biopolymer system is resistant to irradiation similarly to that of Ginkgo biloba L. Subunits were not observed in contrast to the partial dissolutions method. But after 60' of irradiation molecular structures (sensu strictu) were observed in particular at the endexine/intine border. Microbial organisms were observed not only on the surface of the pollen grains, but within the ectexine, in the cavities of the infratectal layer, mostly in the alveolar system of the bladders. |
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| Terjedelem/Fizikai jellemzők: | 93-102 |
| ISSN: | 0866-5443 |