Rhododendron pollen grains with emerging pollen tubes from each aperture of a pollen tetrad

Artificial color emphasizes the morphology of the rhododendron pollen grains. Secondary electron image acquired at 15 kV in a scanning electron microscope.
September 14, 2023

Chen-Rhododendron-Pollen-yellow-tube-green-viscin_thread-gray-HortSci0741(x2_5k).jpg

Submitted by: Changbin Chen, University of Minnesota, St. Paul, MN