Poppy Photograph - Pollen Grains Germinating On Stigma by Dr Jeremy Burgess.

Pollen Grains Germinating On Stigma is a photograph by Dr Jeremy Burgess. which was uploaded on May 14th, 2013.

Pollen Grains Germinating On Stigma

False-colour scanning electron micrograph (SEM) of pollen grains germinating on the stigma of the opium poppy flower, Papaver somniferum. The stigma... more

by Dr Jeremy Burgess.

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Title

Pollen Grains Germinating On Stigma

Artist

Dr Jeremy Burgess.

Medium

Photograph

Description

False-colour scanning electron micrograph (SEM) of pollen grains germinating on the stigma of the opium poppy flower, Papaver somniferum. The stigma is the pollen receiving structure, which with the ovary, forms the female reproductive organ. It consists of ridges of finger-like projections in this species. The germinating grain swells, splitting to accomodate the emerging pollen tube. The tube, carrying the male gametes, grows down, around or into the stigma, down the style, enters the ovary & approaches the ovule (egg). The tip of the pollen tube ruptures, releasing the gametes (sperm) to fertilize the egg. Mag X 145 at 35mm size. Coloured pink. Original is BW print B786/062.

Uploaded

May 14th, 2013