Search results for "Baden wurttemberg"
showing 4 items of 4 documents
1-Aminocyclopropane-1-Carboxylic Acid, its Malonyl Conjugate and 1-Aminocyclopropane-1-Carboxylate Synthase Activity in Needles of Damaged and Undama…
1994
Summary Levels of free 1-aminocyclopropane-1-carboxylic acid (ACC), its malonyl conjugate (MACC) and ACC-synthase activity were significantly higher in the needles of damaged Norway spruce trees ( Picea abies (L.) Karst ) compared with those in undamaged trees during both the diurnal and seasonal courses. The concentrations of ACC and MACC, and ACC-synthase activity fluctuated much more intensively in the needles of damaged trees both in the diurnal and the seasonal courses than in those of undamaged ones, which implies that damaged trees respond more sensitively to the environmental conditions. ACC concentrations were the highest in summer and lowest in fall, while MACC concentrations seem…
Studies of Components of the Thylakoid Membrane of Undamaged and Damaged Spruce Trees at Different Mountain Sites
1993
During a five-year period, components of the thylakoid membrane in needles of the second generation of undamaged and damaged trees of Norway spruce were studied at three different mountain sites in West Germany. Visible signs of damage at these sites are a yellowing of the light-exposed sides of the needles as well as the loss of needles. The goal of this study was to determine damage-induced alterations in composition and physiological reactions of the thylakoid membranes in spruce needles. In order to meet this purpose, contents of chlorophyll a and b, electron transport rate of photosystem II, contents of the D 1 protein, cytochrome f, as well as P-700 were measured. The chlorophyll cont…
Sag, wie hältst Du's mit Grün-Rot? Die grün-rote Landesregierung im Urteil der Wähler 2011 bis 2015
2016
In unserem Beitrag analysieren wir, wie die Burgerinnen und Burger den Regierungswechsel und die Ubernahme der Regierungsgeschafte durch die neue grun-rote Regierung wahrgenommen, wie sich die Regierungs- und Parteienzufriedenheit (ausgedruckt durch die hypothetische Wahlentscheidung) im Zeitverlauf entwickelt haben und was die Determinanten der Zufriedenheit sind. Unsere Analysen basieren dabei auf insgesamt sechs reprasentativen telefonischen Befragungen im Zeitraum von November 2011 bis Oktober 2015. Wir konnen zeigen, dass im Laufe der Legislaturperiode die vor der Wahl stattgefundenen Ereignisse mehr und mehr an Bedeutung fur die Bewertung der Regierungsleistung verlieren. Die Landesre…
Phenolic Compounds in Needles of Norway Spruce Trees in Relation to Novel Forest Decline I. Studies on Trees from a Site in the Northern Black Forest
1992
Summary Contents of selected phenolic compounds in needles of Norway spruce trees (Picea abies) from the Black Forest were measured using a HPLC-technique elaborated for serial studies in forest decline research. Measurements on needles that were harvested on several dates during two growing seasons gave no hint of seasonal variations in the concentrations of the studied phenolic compounds. Values for picein demonstrate an average decrease in the needles of severely damaged trees compared with the still undamaged ones, but the results are impaired by strong individual variations among the single trees. p-Hydroxyacetophenone was found in only very low amounts showing no constant differences …