Pollen of Red Shank flower

Pollen of Red Shank flower

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Credit: R.E.LITCHFIELD/SCIENCE PHOTO LIBRARY

Caption: False-colour scanning electron micrograph of pollen grain of Red Shank, Polygonum persicaria. The grain is roughly sperical. It has a highly sculptured outer wall (exine) of tiny columns (bacula), fused at their tips to form ridges or walls (muri), & arranged in a network. The ridges enclose irregular shaped areas studded with granular wart-like processes. The pollen grain, containing the male gametes, is dispersed, lands on the stigma of the flower & germinates. A pollen tube grows out of the grain, down through the stigma, to the ovary. The male nuclei pass down the tube, fertilize the ovules & a seed is formed. Magnification: x770 at 35mm size.

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Keywords: botany, nature, plant, plants, pollen, polygonum, polygonum persicaria, red shank, reproduction, reproductive, type

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