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Germination of turnip pollen
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Germination of turnip pollen
Germinating pollen grain. Coloured scanning electron micrograph (SEM) showing the germination of a pollen grain on the stigma of a turnip flower, Brassica campestris. Many pollen grains are seen with their sculpted, lace-like surfaces. A pollen tube (at centre) has grown out of one pollen grain; this tube grows down into one of the finger-like projections that form the female stigma (blue) of the flower. The tube penetrates the stigma and style, to reach the ovaries at the base of the style. The tube then conveys two male gametes, or sperm cells, which fertilize an ovule (egg) to produce a seed. Magnification: x700 at 6x4.5cm size
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Media ID 6288103
© DR JEREMY BURGESS/SCIENCE PHOTO LIBRARY
Germinating Germination Pollen Re Production Reproductive Stigma Tube Turnip Type Brassica Campestris
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