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Fig. 4. Elongation of 1- and 10-mm-long cucumber radicles after they were either held in 0.3 or 0.6 M mannitol for 0.2 or 24 h at 25°C before being grown at 25°C for 72 h or chilled at 2.5°C for 72 h and then held at 25°C for 72 h. Lengths were adjusted so that 0 represents the length of the radicle when they were moved into 25°C for 72 h of elongation. The portion of the bar above 0 is the elongation that occurred during the final 72 h at 25°C. The solid portion of the bar below 0 is the initial radicle length, while the open bar is the elongation that occurred during the mannitol treatment. The vertical line atop each bar represents ± SE (n = 12).
