One of the most widely used techniques to quantify polar auxin transport is the measurement of auxin speed. To date there have been more than 90 published reports of auxin speed in 44 species. We have collected available speed measurements into a database, along with information on plant growth conditions and growth rate. Measured auxin speeds have a range of 1.2-18 mm/h, and show notable correlations with organ type, growth rate, and plant clade.
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