Germinating wheat grain. Coloured scanning electron micrograph (SEM) of a germinating grain of wheat (Triticum sp.). The majority of the seed comprise

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Germinating wheat grain. Coloured scanning electron micrograph (SEM) of a germinating grain of wheat (Triticum sp.). The majority of the seed comprises a store of starch surrounded by a seed coat (yellow). This starch provides the embryo plant with the necessary energy for germination. Germination may be triggered by humidity, temperature or other factors. A root radicle (lower left) emerges from the seed coat and begins to grow down into the soil. The leaf shoot (green) that grows to the surface is surrounded by a protective sheath called the coleoptile. Wheat is an important food crop. Magnification: x17 when printed 10cm wide.

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Size: 5000px × 4000px
Photo credit: © EYE OF SCIENCE/SCIENCE PHOTO LIBRARY / Alamy / Afripics
License: Licensed
Model Released: No

Keywords: botany, cereal, coleoptile, coloured, cotyledon, crop, embryo, food, foodstuff, germ, germinating, germination, grain, grass, horizontal, nature, part, parts, plant, plants, radicle, reproduction, reproductive, seed, sem, sp., structure, triticum, wheat