RESINS OF 4 SPECIES OF CONVOLVULACEAE AND THEIR ALLELOPATHIC POTENTIAL

From the roots of Merremia dissecta (Jacq.) Hallier, M. tuberosa (L.) Rendle, Turbina corymbosa (L.) Raf. and Operculina pinnatifida (H.B.K. ) O'Don, resins were isolated which are characteristic of the Convolvu laceae. The allelopathic activity of these resins as well as their ant ibacterial effect were determined. The four species analyzed showed al lelopathic activity on the radicle growth of amaranth, wheat and oats, but they had no antibacterial activity against Escherichia coli and B acillus subtilis.