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EnglishMeasurements of leaf gas exchange under saturating light were performed on plants of six species during and after a short-term treatment with ozone (200 ppb, 5 h). Reductions of photosynthetic activity were observed in all the species; they were associated to stomatal closure and/or mesophyll limitations. Laurus nobilis and Hedera canariensis var. azorica showed a quick reduction of stomatal conductance, with a consequential limitation of photosynthetic activity; this species was able to fully recover before the end of the fumigation. Nerium oleander and Hedera helix also showed a significant reduction of photosynthetic activity, associated to a partial stomatal closure. Photosynthetic efficiency of Viburnum tinus and Arbutus unedo was affected only after the end of the treatment, the main effects being non-stomatal.
| Autori interni: | ||
| Autori: | G. LORENZINI; NALI C; G. LIGASACCHI; R. AMBROGI | |
| Titolo: | Effects of ozone on photosynthesis of Mediterranean urban ornamental plants | |
| Anno del prodotto: | 1999 | |
| Appare nelle tipologie: | 1.1 Articolo in rivista |
File in questo prodotto:
http://hdl.handle.net/11568/191244
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