Growth of bean and tomato plants as affected by root absorbed growth substances and atmospheric carbon dioxide

摘要

Bean and tomato plants were grown in solution culture root media containing pre-determined concentrations of gibberellin A3(GA), 1-naphthaleneacetic acid (NAA), N6-benzyladenine (BA), (2-chloroethyl)trimethylammonium chloride (CCC), and at atmospheric levels of 300 and 1000 ppm of CO2. Net assimilation rates (NAR), relative growth rates (RGR), leaf area ratios (LAR), root to top dry weight ratios (R/T) and changes in dry weight, size, and form of each organ were recorded.