Study on The Chemical Constituents from the Essential Oil of Cinnamomum tenuipilis Kosterm New Resource Plants of Natural Camphor and Linalool Cloning and Sequence Analysis of a Homologous Linalool Synthase Gene Involved in Floral Scents in Osmanthus fragrans var. thunbergii Studies on the Chemical Constituents of Essential oil from the Leaves of Da Ye Fangzang Cinnarnornurn porrectum Cloning a Homologous Linalool Synthase Gene of Lavandula latifolia and Construction of Plant Expression Vector Advances in research of pharmacological effects and formulation studies of linalool