Stimulatory effect of kinetin, ascorbic acid and glutamic acid on growth and chemical constituents of Codiaeum variegatum L. plants.

Abstract

2 Abstract: Two pot experiments were conducted during two successive seasons (2009 and 2010) in the nursery of the National Research Center. The aim of this work is to study the stimulatory effect of kinetin (20 and 40 ppm), ascorbic acid (100 and 200 ppm) and glutamic acid (100 and 200 ppm) on growth and chemical constituents of Codiaeum variegatum L. Results showed that, increasing concentration of the three foliar applications gradually increased all growth parameters (plant height, number of branches, number of leaves, stem diameter, root length as well as fresh and dry weights of all plant organs) and also the content of the total carbohydrates, nitrogen, phosphorus and potassium percentages. The effect of glutamic acid was superior to that of kinetin, ascorbic acid on increasing plant growth at vegetative growth especially when plants were sprayed with glutamic acid at 200 ppm.