The mean size of pollen grains, based on the projected area, were measured using an Optical Microscope (Leica). The results are shown below for different pollen species.
In the case of corn pollen, size measurements were carried out under the Optical Microscope, Scanning Electron Microscope and directly from the reconstructed in-focus holograms. Measurements were made when the pollen was dry as well in fully wetted state. Some examples of pollen shapes in different "settings" are shown below.
The pdf's of corn pollen sizes are very similar in shape under different conditions. However, the mean value is different.
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