Investigations on Rubber-Bearing Plants: I. Propagation of Taraxacum kok- saghyz by Means of Leaf Cuttings

Abstract

Factors considered essential in the propagation of leaves of T. kok-saghyz are removal under water, moderate humidity and a temp. of approx. 68[degree] F in the cutting-frame, and potting with the leaf base just below the soil line. Attempts to improve the degree of regeneration by treatments with indole-3-butyric acid, naphthaleneacetic acid, glucose, asparagine, glycine, p-aminobenzoic acid, and KNO3, in various concs. and combinations, were unsuccessful. In regeneration the shoots arise from leaf-borne roots. 6 clones tested varied from 0% to 27% in their ability to regenerate. The condition of growth at the time of testing, rather than the age of the parent plant, seemed to determine variation within a clone.