小菜蛾

When transgenic rape leaves were fed to Plutella xylostera, mortality of second instar larvae ranged from 33％ to 47％ and the survival larvae had a less weight than the control.

对叶绿体转化植株进行虫试，结果表明，8天后小菜蛾幼虫的死亡率为33％-47％，未死亡的幼虫比对照体重减轻。说明所获得的叶绿体转基因植株具有杀虫和抑制幼虫生长的作用。

The effects of capsaicin on glutathione S-transferase and Na(superscript +)-K(superscript +)-ATPase of Plutella xylostella were tested with conventional methods in laboratory.

采用常规生化方法测定了辣椒碱对小菜蛾体内谷胱甘肽S-转移酶和Na-K-ATP酶活性的影响。

Diamondback moth,Plutella xylostella L.,a cosmopolitan pest of crucifers ,had shown resistance to more than 50 insecticides which had brought large difficulties in chemical control of pests.

小菜蛾是一种世界性十字花科蔬菜害虫，目前已对生产上常用的杀虫剂产生了不同程度的抗药性，给药剂防治带来很大的困难。

Bioassay showed that the LC50 of Cry2Ad2 against Culex pipiens and Plutella xylostella with a spreaded method was 205.3469μg/ml and 307.2562μg/ml, and it could also inhibit the growth of Leucania separate larvae.

对表达的Cry2Ad2蛋白进行生物测定，结果表明，Cry2Ad2蛋白对四龄淡色库蚊和三龄小菜蛾72小时的的LC50分别为205.3469μg/ml和307.2562μg/ml，对粘虫幼虫的生长发育也有明显的抑制作用。

Its insecticidal activity was evaluated. ZJ0967 exhibited higher insecticidal activity against Mythimna sepatara and Prodenia litura, followed by Plutella xylostella and Spodoptera exigua. The LC50 value against P.

室内生测结果表明，甲磺虫腙对小菜蛾Plutella xylostella、甜菜夜蛾Spodoptera exigua，特别是对粘虫Mythimna sepatara、斜纹夜蛾Prodenia litura表现出良好的杀虫活性。

The major dominant species of predatory enemies were Erigonidium graminicola and Theridion octomaculatum and their individuals were 81.4 percent of the total predatory enemy individuals of the community.1.2 Spatial patterns and their dynamics of major dominant predatory enemies ofarthropod communityThe research results showed that Pieris rapae distributed mainly on heart leaves and back of inner leaves of cabbage plants, Plutella xylostella distributed mainly on the back of cabbage leaves and Lipaphis erysimi distributed widely in cabbage plants. Among the major dominant species of predatory enemies, Sitticus sinensis distributed mainly on the front of leaves of cabbage plants in spring cabbage fields, and Misumenopos tricuspidata and Propylaea japonica distributed widely in cabbage plants.

在捕食性天敌中蜘蛛10种，捕食性昆虫3种，主要优势种为草间小黑蛛、八斑球腹蛛，其数量占捕食性天敌总数量的81.4%。1.2节肢动物群落主要优势种的空间格局及其动态研究结果表明，害虫优势种菜青虫主要分布于甘蓝心叶和甘蓝叶反面，小菜蛾主要集中分布在甘蓝叶的反面，而菜蚜在甘蓝植株内的分布较广；春甘蓝田捕食性天敌优势种中华跃蛛在外层叶正面分布较集中，三突花蛛与瓢虫类在甘蓝植株内的分布较广。

Five species of solvents, namely, acetone, ethyl acetate, ether, trichloromethane and petroleum ether were selected to obtain extracts from Portulaca oleracea L. with microwave assistance and the biological activities of each extract was tested against Plutella xylostella L.

在微波加热条件下，以丙酮、乙酸乙酯、乙醚、三氯甲烷和石油醚为溶剂对马齿苋干粉进行提取，试验了各溶剂提取物对小菜蛾幼虫的触杀、胃毒及拒食活性，确定了石油醚提取物触杀作用的LD50。

Plant volatiles as allyl isothiocyanate , Z-3-hexen-1-ol , and Z-3-hexenyl acetate can attract DBM effectively and they have enhanced effect on captures of sex lure.

同时研究了植物挥发物异硫氰酸丙烯酯、青叶醇（Z-3-hexen-1-ol）、乙酸顺-3-己烯酯（Z-3-hexenyl acetate）对小菜蛾的诱捕作用及对性信息素诱捕作用的影响。

The present invention discloses a strain of broad spectrum bacillus thuringiensis, Hcy08-02, preserved in the Chinese typical culture article preserving center in Wuhan University with the CCTCC No.M202025. It has excellent fermentation property, contains several pesticidal protein encoding genes and has effective killing function to cotton bollworm, cabbage moth, small mottid willow moth, cabbage worm and other pests.

本发明公开了一株广谱苏云金芽孢杆菌Hcy08-02，在武汉大学中国典型培养物保藏中心保藏，编号：CCTCC NO：M202025，该菌株有优良的发酵性，含有多个杀虫蛋白质编码基因，对鳞翅目的棉铃虫、小菜蛾、甜菜夜蛾、菜青虫等害虫具有高效的毒杀作用。

The resistance to dimehypo and cartap did not decrease the biological characteristics in diamondback moth.

小菜蛾对杀虫双和杀螟丹的抗性并未付出明显的生物学代价。

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