Pollen on stigma of turnip flower

Pollen on stigma of turnip flower

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Credit: DR JEREMY BURGESS/SCIENCE PHOTO LIBRARY

Caption: Scanning electron micrograph (SEM) of pollen germination on the stigma of the turnip flower, Brassica campestris. In this example, pollination has been done by hand in order to show the finger- like projections of the stigma free of pollen (right) and buried in pollen (left). Pollen dispersal is achieved mainly by means of the wind & insects, though other animals including bats, birds & humans are involved as well. Of the thousands of pollen grains which may reach a flower's stigma, only a small proportion germinate. Magnification: X 20 for 35mm size, X 40 for 6x7cm size.

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Keywords: botany, brassica campestris, germination, nature, plant, plants, pollen, pollination, reproduction, reproductive, scanning electron micrograph, sem, stigma, turnip

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