Summary
For this work we have used various microscopical methods (LM, SEM, and TEM) to study pollen tube growth and interaction with the transmitting tisse inStrelitzia reginae, which has an open style. By the use of SEM it was possible to trace the exact route of the pollen tubes in the ovary of this plant and demonstrate that they exclusively follow the outlines of the transmitting tissue. The average rate of pollen tube growth through the style was 1.8 mm h−1. The most significant effect of the pollination was a thickening of the distal wall of the subepithelial cells in the style. A secretion covers the stigma and the ovarian transmitting tissue and fills the stylar canal. This exudate contains lipids, polysaccharides, and proteins.
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Kronestedt, E., Walles, B. & Alkemar, I. Structural studies of pollen tube growth in the pistil ofStrelitzia reginae . Protoplasma 131, 224–232 (1986). https://doi.org/10.1007/BF01282985
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DOI: https://doi.org/10.1007/BF01282985