Figure 5. The percentage of embolized xylem area (black) and
water potential (blue) plotted against time for a leaf of Lindera
benzoin rehydrated at 20% embolized xylem area (A), in which only
midrib and a few major veins had experienced embolism (B) and a leaf of
the same species that was rehydrated when 35% of the xylem was
embolized (C). The vertical dashed lines in A and C indicate the period
between rehydration and the point at which the Ψ on the second
dehydration had declined to the Ψ when the branch was first rehydrated.
The red box in C surrounds the percentage of embolized xylem area that
occurred prior to Ψ declining to the value recorded when the branch was
rehydrated. In B the area of leaf imaged is shown on the left and the
embolism events observed when rehydrated shown on the right, the scale
bar depicts the Ψ at which each embolism event occurred.