Láposi Réka: Photosynthesis-ecophysiological properties of beech (Fagus sylvatica L.) under the exclusion of ambient UV-B radiation. In: Acta biologica Szegediensis, (46) 3-4. pp. 243-245. (2002)
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Absztrakt (kivonat)
The effects of exclusion of UV-B radiation on leaf physiology of beech seedlings regenerating in a deforested area were studied in field. Under UV-B exclusion the chlorophyll content of leaves was higher, the chlorophyll a/b ratio and the carotenoid content was lower than in leaves under the ambient level of UV-B radiation. In leaves developed under the exclusion of UV-B a smaller degree of conversion of violaxantin to zeaxantin and atheraxantin was found at noon. The results showed that the ambient level of UV-B radiation decreased the maximum photochemical efficiency (FyFJ of the dark-adapted leaves, especially at noon. Beech leaves contained significantly higher quantities of UV-B absorbing compounds on the basis of leaf area at the ambient UV-B than under the UV-B exclusion. Flavonoid accumulation took place in close correlation with the increase of specific leaf weight as compared to the leaves developed under UV-B exclusion.
| Mű típusa: | Cikk, tanulmány, mű |
|---|---|
| Rovatcím: | Ecophysiology; Proceedings of the 7th Hungarian Congress on Plant Physiology |
| Befoglaló folyóirat/kiadvány címe: | Acta biologica Szegediensis |
| Dátum: | 2002 |
| Kötet: | 46 |
| Szám: | 3-4 |
| ISSN: | 1588-385X |
| Oldalak: | pp. 243-245 |
| Nyelv: | angol |
| Konferencia neve: | Hungarian Congress on Plant Physiology, 7., 2002, Szeged |
| Befoglaló mű URL: | http://acta.bibl.u-szeged.hu/39245/ |
| Kulcsszavak: | Természettudomány, Biológia |
| Megjegyzések: | Bibliogr.: 245. p.; Abstract |
| Feltöltés dátuma: | 2016. okt. 17. 09:25 |
| Utolsó módosítás: | 2021. ápr. 13. 12:24 |
| URI: | http://acta.bibl.u-szeged.hu/id/eprint/22575 |
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