作　　者： ; ; ; (余雄辉）;

机构地区： 华南农业大学园艺学院

出　　处： 《华南农业大学学报》 2006年第1期17-20,共4页

摘　　要： 采用广东主栽乌龙茶品种之一岭头单枞品种为研究材料,通过水分胁迫处理茶树,分析鲜叶芳香物质的变化.结果表明:水分胁迫处理能明显增加芳香物质的种类,土壤含水量(w)为10.56%的处理芳香物质种类最多,共有58种;土壤含水量(w)为19.59%的处理芳香物质种类最少;随着水分胁迫加深,芳樟醇及其氧化物等17种物质的含量增加,而十四烷酸等12种物质则随着水分胁迫程度的加深而减少;芳樟醇及其氧化物、α-萜品醇、十四烷、10-甲基十九烷、十二醛等芳香物质,在土壤含水量(w)为10.56%的处理达到高峰;二十烷基环己烷、1-十六烯、1-脂肪醇只出现在土壤含水量(w)为14.84%和10.56%的处理中;蓝桉醇、3,7,11-三甲基-1,6,10-十二碳三烯-3-醇、香叶醇物质只出现在土壤含水量(w)为10.56%和5.73%处理中;土壤水分胁迫可抑制杜鹃花酸单甲酯等7种类物质的合成;不同程度的土壤水分胁迫能诱导形成不同种类的芳香物质的合成,并随着水分胁迫程度的加深,其诱导的芳香物质种类也增加. 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.

关 键 词： 水分胁迫 岭头单枞茶 芳香物质 鲜叶

领　　域： [农业科学] [农业科学]