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A typical inhibitor experiment showing the effects of BFA on acPase activity (A), germination frequency (B), and mean tube length (C). Pollen grains were incubated in germination medium. After 12 h, BFA (5 μg mL−1) was added to one-half of the pollen culture (▴), whereas the other half served as a control (♦). All three parameters were determined every 6 h. The data points represent means with sds of three independent experiments.
