噻螨酮乳油的气相色谱分析方法     

王雷 《农药科学与管理》1998,(Z1)

本文选用长１ｍ的填充柱，内装７％ＳＥ－３０，以苯二甲酸二（２－乙基）己酯为内标物，在气相色谱条件下，对５％噻螨酮乳油中有效成分进行定量分析。该方法对噻螨酮有效成分的变异系数为０．７３％，回收率为１０２．４％，线性相关系数为０．９９８８，保留时间为３．９ｍｉｎ。  相似文献   

Preparation of Novel Hexythiazox Analogues     

Lajos Novk  Gbor Hornynszky  Jnos Rohly  Pl Kolonits  Csaba Szntay 《Pest management science》1997,49(1):85-89

Novel analogues of the title compound were prepared in several steps: via addition of methylmagnesium iodide to an acetamide derivative to yield diastereomeric amino alcohols, followed by hydrolysis, cyclization to the corresponding oxazole or thiazole derivative, and a coupling reaction with isocyanates. Results from acaricidal tests showed the compounds to be 100 times less active than hexythiazox. © 1997 SCI.  相似文献   

Comparison of clofentezine and hyxythiazox with cyhexatin for integrated control of European red mite, Panonychus ulmi (Koch)     

C. C. Bower 《Crop Protection》1990,9(6):463-468

The ovicides clofentezine and hexythiazox were shown to be compatible with integrated control of European red mite, Panonychus ulmi (Koch), in a replicated field trial conducted over two growing seasons in an apple orchard at Batlow, New South Wales, Australia. Reduced concentrations of clofentezine (5 and 10 g a.i. per 100 litres water—normally 20 g) applied as foliar sprays to run-off, stabilized the predator/prey interaction between P. ulmi and Typhlodromus pyri Scheuten more effectively than low rates of cyhexatin (5 and 10 g a.i. per 100 litres water—normally 20 g). There was no evidence that the effectiveness of clofentezine or hexythiazox would destablize integrated control by eliminating P. ulmi and starving T. pyri. Populations of T. pyri persisted in low numbers on the trees in the absence of P. ulmi or other arthropod food sources on leaves.  相似文献   

柑橘全爪螨钠离子通道基因差异性分析     

冉春  涂祖霞  陈飞  张云飞  刘浩强  李鸿筠 《西南大学学报》2013,35(6)

为弄清钠离子通道基因与柑橘全爪螨Panonychus citri噻螨酮抗性的关系,通过柑橘全爪螨转录组分析鉴定了钠离子通道基因;采用序列比对和Sanger测序,分别对柑橘全爪螨敏感品系和噻螨酮抗性品系钠离子通道基因序列进行单核苷酸多态性分析;进一步采用RPKM法和荧光定量PCR对抗性品系和敏感品系钠离子通道基因进行表达差异分析.从柑橘全爪螨转录组中获得了39条钠离子通道基因,相对于敏感品系,抗性品系中有21条表达上调,17条表达下调,Nay1.8.1和Nay1.6.4分别为上调倍数最高的2个钠离子通道基因[log2 Ratio(RS/SS)分别为10.59,10.30],进一步荧光定量PCR分析发现,Nav1.8.1和Nav1.6.4上调倍数分别为3.92和1.68;基因序列比较和Sanger测序发现,抗性品系中,Nay1.9.4在344,441,468位和Nav1.7.3在第786分别有3个和1个SNP位点,进一步分析编码的氨基酸序列发现,Nav1.9.4只有第468位G突变为A导致蛋氨酸突变为异亮氨酸,Nav1.7.3在第786位T突变为C导致亮氨酸突变为色氨酸.钠离子通道基因差异性分析及验证为进一步研究柑橘全爪螨抗性分子机理提供了有价值的基因资源.  相似文献   

尼索螨醇乳油的液相色谱分析   总被引：1，自引：0，他引：1  

苏大水 《农药科学与管理》1999,20(1):12-13

本文采用ＹＷＧＣ１８色谱柱,用甲醇＋水为流动相和紫外检测器,对尼索螨醇中有效成分尼索朗和三氯杀螨醇进行反相色谱分离和定量测定,具有快速简便等优点。本方法变异系数分别为３．８３％、０．６０％,平均回收率分别为９９．３％、９９．７％,线性相关系数分别为０．９９９５、０．９９９８。  相似文献