Stuies on the Chemical Constituents of the Essential Oils from the Leaves of Aglaia odorata Lour Isolation and Identification of the Constituents of Volatiles of Dry Flowers of Aglaia odorata Lour Antibacterial Components from the Twigs of Aglaia odorata var. microphyllina PRELIMINARY STUDY ON INSECTICIDAL COMPONENTS OF THE LEAVES OF MELIACEOUS PLANT,AGLAIA ODORATA VAR.CHAUDOCENSIS,AND THEIR TOXICITY AGAINST SPODOPTERA LITVRA Insecticidal active constituents from twig of Aglaia odorata