曼陀罗叶

To compare allelopathy of different parts of plant Datura Stramonium, the effective components from D.

为了比较曼陀罗不同部位化感作用的差异，用蒸馏水分别浸提曼陀罗根、茎、叶的有效成分，以蒸馏水为对照，研究曼陀罗根、茎、叶浸提液对芝麻和粟种子萌发和幼苗生长的影响。

In a colonizing population of Datura stramonium, there was significant plasticity in specific leaf area, leaf area ratio and number of leaves; traits that are associated with light capture in response to high density.

在曼陀罗的移植种群中，比叶面积、叶面积比和叶片数都具有显著的可塑性，这些特征都与捕光能力对高密度的响应有关。

In order to know the nemsticifal activities substance and the mechanisms of Datura metel Linn, total alkaloids from the leaf of Datura metel Linn was extracted and identified, and studied the mechanism of it by determining the activity of Ache and the Ach content of Meloidogyne incognita.

为了解白花曼陀罗的杀线活性物质及其作用机理，对白花曼陀罗叶的总生物碱进行了提取鉴定，并通过测定乙酰胆碱酯酶活性及乙酰胆碱含量研究其作用机理，结果表明：生物碱是白花曼陀罗的重要杀线活性物质，可抑制线虫乙酰胆碱酯酶活性，提高线虫乙酰胆碱含量，直接作用于线虫的神经系统。

Stramonium root, stem and leaf on seed germination and seedling growth of sesame and millet were studied.

因此，曼陀罗叶浸提液强烈抑制了芝麻和粟的种子萌发和幼苗生长，茎浸提液和根浸提液也都存在一定的抑制效应，但都弱于叶浸提液。

Stramonium root, stem and leaf were extracted with distilled water, and with the treatment with distilled water as CK, the effects of extracted liquid from D.

结果表明，0.2g/ml曼陀罗叶浸提液处理时，芝麻和粟种子萌发率分别降低83%和83.3%，幼苗的根和茎则停止了生长； 0.4g/ml曼陀罗茎浸提液使芝麻和粟的萌发率降低27.6%和15.8%，幼苗根长降低93.3%和64.7%，幼苗茎长降低51.2和18.0%。0.4g/ml曼陀罗根浸提液使芝麻和粟种子萌发率降低31.2%和56.2%，幼苗根长降低75.1和15.0%。

The results showed that extracts from Datura metel seeds had strong antifeeding effect on Agelastica alni orientalis, Apocheima cinerarius and Vanessa indica. They also had high contact toxicity on Myzus persicae and Chaitophorus populeti.

结果表明，白花曼陀罗种子提取液对杨毛臀萤叶甲东方亚种成虫、春尺蠖和荨麻蛱蝶幼虫具有较强的拒食活性，对蚜虫具有较强的触杀活性。

As she looked at Warrington's manly face, and dark, melancholy eyes, she had settled in her mind that he must have been the victim of an unhappy attachment.

每逢看到沃林顿那刚毅的脸，那乌黑、忧郁的眼睛，她便会相信，他一定作过不幸的爱情的受害者。

Maybe they'll disappear into a pothole.

也许他们将在壶穴里消失