01276naa a2200133 a 450000100080000000500110000800800410001910000170006024501560007726000090023352008380024270000180108077300440109816486532000-02-17       1979    bl ---       0--  u    #d1 aJONES, M. M.  aInfluence of rate of developmente of leaf water deficits upon photosynthesis, leaf conductance, water use efficiency, and osmotic potential in sorghum.  c1979  aThis estudy the effect of rate of development of leaf water deficits in soil-grown sorghum (Sorghum bicolor) on the relationship of net photosynthesis, leaf conductance, and water use efficiency to leaf water potential, and on the degree of solute accumulation (osmotic adjustiment). Recovery of these processes on rewatering, and responses during a second stress cycle were also studied. The most rapid rate of stress (1.2 MPa day-1) resulted in no solute accumulation and the lowest rate of net photosynthesis and leaf conductance for any given leaf water potential during stress. Stress at 0.7 and 0.15 MPa day-1 led to equal solute accumulations of approximately 0.6 MPa, but net photosynthesis, leaf conductance, and water use efficiency at a given leaf water potential were lower with the faster rate of stress (0.7 MPa day-1).1 aRAWSON, H. M.  tPhysiol. Plant.gv.45, p.103-111, 1979.