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  • Bean seed  (1)
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    Electronic Resource
    Electronic Resource
    Twin crystals of calcium oxalate in the seed coat of the kidney bean (1983)
    Springer
    Protoplasma 114 (1983), S. 23-34 
    Details
    ISSN: 1615-6102
    Keywords: Calcium oxalate ; Twin crystals ; Bean seed ; Phaseolus vulgaris ; SEM ; X-ray diffraction
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Summary Examination of the seed coat of the kidney beanPhaseolus vulgaris L. (var. Kentucky Wonder) in the mature dry condition revealed a layer of cells in which almost every component cell contains a calcium oxalate crystal. These crystals were isolated and studied by light and scanning electron microscopy, and we determined with powder X-ray diffraction that the crystalline substance is calcium oxalate monohydrate (whewellite). The crystals are chevron-shaped or straight twins found in a ratio of 1/1.4. When studiedin situ the crystals were found embedded in a multilayered mass of wall material.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01279865
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