中文摘要：

通过系统分离、GC-MS鉴定的方法,从南方红豆杉种子甲醇浸提液中分离鉴定出多种有机化合物,分析确定了它们的种类和相对含量。结果表明：有机物质主要为有机酸类、酯类、胺类、醇类和酮类等。其中乙酸的抑制活性在其他种子抑制物质的研究中已被证实,胺类物质首次从南方红豆杉种子中被分离鉴定。分别对南方红豆杉种子胚、胚乳和3层种皮的甲醇浸提液进行生物测定,比较几个部位中发芽抑制物质活性的差别,结果说明种子各部位中均含有发芽抑制物质,这些物质对白菜种子的发芽率和胚根生长有抑制作用,但各部位抑制物质的抑制活性存在一定差异,其活性的强弱为胚＆gt;内种皮＆gt;胚乳＆gt;中种皮＆gt;外种皮,且随浸提液浓度的增大,抑制作用逐渐增强。

英文摘要：

Organic compounds were identified from the methanol extract of Taxus chinensis var. mairei seeds using line separation and GC-MS methods and the variety and relative content of these compounds were measured. The results showed that organic acid, ester, amine, alcohol and ketone were main substances in the methanol extract. The inhibitory effect of acetic acid was confirmed and amine was first identified from the seeds of T. chinensis var. mairei. Also,the inhibitory effects of germination inhibitors in different parts of T. chinensis var. mairei seeds were analyzed comparatively by the bioassay of the ethanol extract from embryo, endosperm and testa. The results showed that each part of T. chinensis var. mairei seed contains some germination inhibitors, which had inhibitory effects on the germination rate and root growth of Brassica pekinensis seedlings The inhibiting effects of inhibitors in these parts were different with the order of embryo 〉 endopleura 〉 endosperm 〉 mesosperm 〉 exopleura. The inhibitory effect is gradually reinforced with the increasing concentration of extracts.