خيارات البحث
النتائج 1 - 10 من 11
Changes in pigment concentration and composition in Norway spruce induced by long-term exposure to low levels of ozone.
1995
Mikkelsen T.N. | Dodell B. | Lutz C.
The effects of sodium erythorbate and ethylenediurea on photosynthetic function of ozone-exposed loblolly pine seedlings
1999
Kuehler, E.A. | Flagler, R.B. (Department of Forest Science, Texas Agriculture and Mechanical University, College Station, TX 77843 (USA))
Seasonal variation of gas exchange and pigmentation in branches of three grafted clones of mature ponderosa pine exposed to ozone and acid rain
1997
Anderson, P.D. | Houpis, J.L.J. | Helms, J.A. | Momen, B. (USDA Forest Service, Forestry Sciences Laboratory, Rhinelander, Wisconsin (USA))
Vicia faba as a bioindicator of oil pollution
1996
Malallah, G. | Afzal, M. | Gulshan, S. | Abraham, D. | Kurian, M. | Dhami, M.S.I. (Department of Botany and Microbiology, Faculty of Science, Kuwait University, Safat (Kuwait))
Chlorophyll, carotenoids and the activity of the xanthophyll cycle
1990
Siefermann-Harms, D. (Kernforschungszentrum Karlsruhe, Institut fur Genetik und fur Toxikologie von Spaltstoffen, Postfach 3640, W-7500 Karlsruhe 1 (Germany))
Effects of ultraviolet-B radiation (UV-B) on growth and physiology of the dune grassland species Calamagrostis epigeios
1995
Tosserams, M. | Rozema, J. (Department of Ecology and Ecotoxicology, Faculty of Biology, Vrije Universiteit, De Boelelaan 1087, 1081 HV Amsterdam (Netherlands))
Pigment changes in Norway spruce induced by dust pollution
1997
Mandre, M. (Estonian Academy of Sciences, Tallinn (Estonia). Dept. of Ecophysiology) | Tuulmets, L.
Direct Effects of Air Pollution on Physiology of Forest Trees in the Western United States
1993
Bytnerowicz, A. (USDA Forest Service, Riverside, CA (USA). Pacific Southwest Research Station)
Physiological processes of western trees are effected by ozone at concentration over 80 ppb, depending on the duration of the exposures and environmental conditions. At a single fascicle level short-term ozone exposures can cause reduction, no change or increase of stomatal conductance and net assimilation rate. Two seasons of exposures at twice level ozone concentrations caused a significant reduction of stomatal conductance and pigment concentrations in foliage.
اظهر المزيد [+] اقل [-]Photosynthetic activity, chlorophyll-fluorescence parameters and pigment content of differently damaged Norway spruces at the Schoellkopf (Northern Black Forest)
1990
Lichtenthaler, H.K. (Karlsruhe Univ. (Germany, F.R.). Botanisches Inst.) | Rinderle, U. | Burkart, S. | Hak, R.
Physiological and biochemical investigations into the yellowing of spruce and higher altitudes. Pt.3: Light and yellowing
1990
Siefermann-Harms, D. (Kernforschungszentrum Karlsruhe (Germany, F.R.). Inst. fuer Genetik undToxikologie)
