Measurement Of The Pulling Force Of A Single Contractile Root
A technique is described that can be used for direct measurement of the force of a single contractile root. This lifting technique has been tested on five species. It is shown that the results from direct measurement are in general agreement with those obtained with an indirect measurement. This new technique makes it possible to measure the pulling force of plants with specialized movements, e.g., Triteleia hyacinthina, in which contractile roots produce a channel for the movement of the offset. Although Triteleia contractile roots have what has been described as a 100% channel effect, measurements with the lifting technique show that a pulling force can, indeed, be measured. Key words: contractile root(s), monocotyledons, root contraction, plant movement, Triteleia hyacinthina, Sauromatum guttatum.