Summary
The structure of sperm cells in mature trinucleate pollen grains ofBeta vulgaris L. was studied with the electron microscope. The ellipsoidal sperm cell nuclei and cytoplasm are products of mitosis and cytokinesis of the ellipsoidal generative cell. Each sperm cell is separated from the vegetative cytoplasm by two contiguous membranes which enclose its cytoplasm and nucleus. Microtubules present in the sperm cell cytoplasm may be responsible for sperm cell motility.
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Approved as Journal paper Nr. 846, Utah Agricultural Experiment Station, Logan, Utah.
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Hoefert, L.L. Fine structure of sperm cells in pollen grains ofBeta . Protoplasma 68, 237–240 (1969). https://doi.org/10.1007/BF01247908
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DOI: https://doi.org/10.1007/BF01247908