Figure 1

Pollen tube length and the first callose plug position vary in Arabidopsis . (A) Average pollen tube length from 50 randomly selected pollen tubes after 6h pollen germination. Two independent experiments (black and white bars). An unpaired t test was performed with two independent experiments. Error bars, SEM, P<0.5. (B) Average length of the first interval from 50 randomly selected pollen tubes after 6h pollen germination. Two independent experiments (black and white bars). Error bars, SD. (C) Distribution of the first intervals pooled from two independent experiments according to the interval length. 150μm was used as the criterion to group those intervals. The intervals in dashed boxes are those ≥150 μm, and the proportion above the dashed box represents the percentage.