A modified Amaranthus betacyanin bioassay for the rapid determination of cytokinins in plant extracts.
Pure cytokinin standards and celery seed extracts containing cytokinin activity were bioassayed using a modified Amaranthus betacyanin bioassay. The assay is very rapid and requires no special sterile precautions.
Plant Physiology Section, National Vegetable Research Station, Wellesbourne, Warwick, UK.
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Biddington
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Thomas