Fig. 2

Effect of the selected concentrations of the compounds on pollen tube diameters at 5 μm and 30 μm from the tip. Data represent the mean of 15 pollen tubes from two biological replicates ± SEM. Asterisks indicate significant differences (*** P < 0.001, ** P < 0.01 and * P < 0.05) from the control DMSO 0.3% according to Dunnett’s test analysis with R software