Number 4, June

Tree Physiology 8:337–350 [ Summary ] [ Full Text ]
Clonal variation in amino acid contents of roots, stems, and leaves of aspen (Populus tremuloides Michx.) as influenced by diurnal drought stress
David H. Griffin, Michail Schaedle, Paul D. Manion and Michael DeVit

Tree Physiology 8:351–360 [ Summary ] [ Full Text ]
Comparative drought resistance among six species of birch (Betula): influence of mild water stress on water relations and leaf gas exchange
T. G. Ranney, R. E. Bir and W. A. Skroch

Tree Physiology 8:361–370 [ Summary ] [ Full Text ]
Crown structure and partitioning of aboveground biomass before the competition phase in a mixed stand of normal-crowned Norway spruce (Picea abies (L.) Karst.) and pendulous Norway spruce (Picea abies f. pendula (Lawson) Sylven)
P. Pulkkinen

Tree Physiology 8:371–379 [ Summary ] [ Full Text ]
Loblolly pine photosynthesis is enhanced by sublethal hexazinone concentrations
Jon D. Johnson and Henry E. Stelzer

Tree Physiology 8:381–389 [ Summary ] [ Full Text ]
Effects of nitrate on in vivo nitrate reductase activity of seedlings from three open-pollinated families of Robinia pseudoacacia
Kurt H. Johnsen, Bruce C. Bongarten and Lindsay R. Boring

Tree Physiology 8:391–398 [ Summary ] [ Full Text ]
Determining leaf nitrogen concentration of broadleaf tree seedlings by reflectance measurements
Claude St-Jacques and Pierre Bellefleur

Tree Physiology 8:399–405 [ Summary ] [ Full Text ]
Long-term measurement of CO₂ release from the aboveground parts of a hinoki forest tree in relation to air temperature
Samuel Arung Paembonan, Akio Hagihara and Kazuo Hozumi

Tree Physiology 8:407–413 [ Summary ] [ Full Text ]
Metabolic changes related to the acceleration of jack pine germination by osmotic priming
Jacqueline Bourgeois and L. Malek

Tree Physiology 8:415–421 [ Summary ] [ Full Text ]
Induction of drought resistance by abscisic acid and paclobutrazol in jack pine
J. G. Marshall, J. B. Scarratt and E. B. Dumbroff

Tree Physiology 8:423–428 [ Summary ] [ Full Text ]
Preparation of protoplasts from callus derived from buds of mature Scots pine and subsequent induction of cell proliferation
Anja Hohtola and Ari-Pekka Kvist