Number 1, January

Tree Physiology 12:1–13 [ Summary ] [ Full Text ]
Sulfate concentrations in Norway spruce needles in relation to atmospheric SO₂: a comparison of trees from various forests in Germany with trees fumigated with SO₂ in growth chambers
Werner Kaiser, Andreas Dittrich and Ulrich Heber

Tree Physiology 12:15–21 [ Summary ] [ Full Text ]
Neutralization and buffering capacity of leaves of sugar maple, largetooth aspen, paper birch and balsam fir
G. E. Liu and Benoît Côté

Tree Physiology 12:23–40 [ Summary ] [ Full Text ]
Characterization of nitrogenous solutes in tissues and xylem sap of Leucaena leucocephala
Martha E. Avery

Tree Physiology 12:41–54 [ Summary ] [ Full Text ]
Variation in seedling hydraulic architecture as a function of species and environment
Durland L. Shumway, Kim C. Steiner and Thomas E. Kolb

Tree Physiology 12:55–69 [ Summary ] [ Full Text ]
Leaf area and net photosynthesis during development of Prunus serotina seedlings
Stephen B. Horsley and Kurt W. Gottschalk

Tree Physiology 12:71–80 [ Summary ] [ Full Text ]
Influence of (22S,23S)-homobrassinolide on rooting capacity and survival of adult Norway spruce cuttings
H. Rönsch, G. Adam, J. Matschke and G. Schachler

Tree Physiology 12:81–92 [ Summary ] [ Full Text ]
Early and late root formation in epicotyl cuttings of Pinus sylvestris after auxin treatment
Gunnar Flygh, Roland Grönroos, Leif Gulin and Sara von Arnold

Tree Physiology 12:93–100 [ Summary ] [ Full Text ]
Effect of ammonium on glutamine synthetase activity in ectomycorrhizal fungi, and in mycorrhizal and non-mycorrhizal Scots pine seedlings
Tytti Sarjala

Tree Physiology 12:101–106 [ Summary ] [ Full Text ]
Analysis of needle proteins and N-terminal amino acid sequences of two photosystem II proteins of western white pine (Pinus monticola D. Don)
Abul K. M. Ekramoddoullah