H. Heilmeier

TL;DR: It is concluded that during the course of a drying cycle the range of maximum leaf conductance seems to be dependent on the concentration of abscisic acid in xylem sap.

TL;DR: It is demonstrated that resource assimilation during the reproductive phase determines seed production, and starch formation is not only an important factor during growth in the rosette phase, but is also important for whole plant allocation during seed formation.

TL;DR: This paper compares the growth and carbohydrate relations of the two stands and examines relationships among growth variables in ten plots and concludes that growth reduction was probably related to factors which affect both photosynthesis and the sinks for carbohydrate.

TL;DR: It is concluded that in almond trees, cytokinins may affect stomatal behaviour on a short-term basis as an outcome of changes in their xylem sap concentrations during the course of a day.

TL;DR: Abscisic acid (ABA) was detected in aqueous extracts of different soils, beneath a range of crops, pasture and forest species as discussed by the authors, and the concentration of ABA was highest in acid soils and in soils with reduced moisture, and was lowest in moist, neutral and moderately alkaline soils.