The Developing Endosperm of Wheat -- A Stereological Analysis |
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| Authors: | BRIARTY L G; HUGHES C E; EVERS A D |
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| Institution: | Botany Department, University of Nottingham Nottingham NG7 2RD
Flour Milling and Baking Research Association Chorleywood, Rickmansworth, Herts |
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| Abstract: | A stereological analysis of light and electron micrographs ofwheat endosperm during grain formation and development providesinformation on a range of parameters of cell structure. Thecell volume increases approximately ten-fold; mitochondrialnumber per cell increases but the individual mitochondrial volumedecreases, the overall volume fraction of the cell occupiedby mitochondria remaining fairly constant. Amyloplast divisionstops before cell division, resulting in the distribution ofpreviously-formed plastids; there are differences in starchgranule growth rate in different cell layers of the endosperm.The rough endoplasmic reticulum increases four-fold in areaper cell and its surface-to-volume ratio increases just priorto protein deposition. Triticum aestivum, L., wheat, endosperm, seed development, starch, stereology |
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