Effect of Dimethylsulfoxide Alone and Combined with N-Dimethylamino Succinamic Acid (B995) or (2-Chloroethyl)trimethylammonium Chloride (CCC) on the Growth and Alkaloid Biosynthesis of Datura Tatula

Abstract

Dimethylsulfoxide (DMSO), B995, and CCC were administered in the form of a spray to the aerial parts of Datura tatula . DMSO did not affect plant height, but caused reductions in plant weight and the total alkaloid content per plant. The concentration of alkaloids in the roots was decreased. The growth retardants, B995 and CCC, induced significant reductions in plant height and total plant weight. Generally, the concentration of alkaloids in the stems was increased, while that in the roots was decreased. The inhibitory effects on height, growth, and alkaloid content were greater in those plants receiving the combined treatment with DMSO and retardant than in those treated with retardant alone. Phytotoxicity was noted in the plants treated with CCC alone or when combined with DMSO.