Aromatic Constituents in Fresh Leaves of Lingtou Dancong Tea as Induced by Drought Stress

Effect of the different drought stress on the aromatic constituents and relative contents in the fresh leaves of Lingtou Dancong tea plants was studied in this paper.Results showed that drought stress could evidently increase the kinds of aromatic component in fresh leaves.The largest number(58 kinds) of aromatic constituents was found under 10.56%(w) water stress among several treatments,while the fewest number was found under the absolute water content of 19.59%(w).The total amount of relative content of 17 kinds of aromatic constituents as Linalool etc.,increased with drought stress,whereas 12 kinds of aromatic constituents as Tetradecanoic acid etc.,decreased with drought stress.Linalool,Linalool oxide,Etradecane,10-Methylnonadecane,Dodecanal showed highest contents under the absolute water content of 10.56%(w);Cyclohexane,1-Hexadecene,1-Tricosanolonly was induced in the absolute water content of 10.56% and 5.73%(w),while drought stress could inhibit synthesis of 7 kinds of constituents as nonanedioic acid monomehtyl ester,etc.The different drought stress could induce special aromatic constituents.The number of aromatic constituents in fresh leaves increased with drought stress.