auxins and their effect on rooting

Auxins and their effects on Rooting Introduction Thimann and Koepfli identified growth-promoting and root-forming substances in plants. They demonstrated the practical use of IAA in the stimulation of root formation on cuttings. Even though there a number of studies indicating that auxins have a promotive effect on rooting there are exceptions which show that it either has no effect on root elongation or is inhibitory at higher concentrations. In addition to either exogenous or endogenous …

…the cutting has been shown to be beneficial to adventitious root formation, however, if the proper water relations are not maintained the cutting will not survive. Therefore, its important to maintain and atmosphere with a low evaporative demand on the plant to reduce transpirational loss, maintain temperatures which promotes root initiation while avoiding heat stress in the leaves and maintain light levels, suitable for photosynthesis and carbohydrate production once root initiation has occurred. ------------------------------------------------------------------------ **Bibliography**