493209.fig.002a
(a) Put (mM)
493209.fig.002b
(b) Spd (mM)
493209.fig.002c
(c) Spm (mM)
Figure 2: Effect of polyamines on root abscission in A. pinnata. Root abscission is represented as % of the initial number of roots following addition of individual polyamines at time zero. (a) Experiments in the presence of varying concentration of putrescine (0.5, 3 and 5 mM ( 𝑛 = 5 ) and 2 mM ( 𝑛 = 1 8 )); (b) in the presence of varying concentration of spermidine (0.5 mM ( 𝑛 = 5 ); 2 mM ( 𝑛 = 1 7 ), 3 and 5 mM ( 𝑛 = 3 )); (c) in the varying concentration of spermine (0.5, 3 and 5 mM ( 𝑛 = 3 ) and 2 mM ( 𝑛 = 1 9 )). The standard error bars are only shown where larger than the symbols used. Assays were conducted in 10 mM potassium phosphate solution (pH 7).