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In this paper the resistance of Fulvia fulva to flusilazole, inducing resistance of sensitive isolates, biological characteristics of mutant-isolate and cross-resistance to other fungicides were studied. The level and distribution of F.fulva resistance in Liaoning, the fitness of mutants, the relation of cross-resistance between flusilazole and other fungicides were confirmed.

本试验系统地研究了目前辽宁省主要保护地蔬菜种植区的番茄叶霉病菌对杀菌剂氟硅唑的抗药性现状、敏感菌株抗药性诱导、抗药性菌株生物学特性以及与其它药剂的交互抗药性关系。

The research indicated that the heredity of resistance in F. fulva to flusilazole is control by polygene.

这些结果说明,叶霉菌对氟硅哇的抗药性遗传应该是由多基因控制的,抗药性具有累加效应。

The senate abalone grows seedlings the antibiotic research Abstract: The trepang the abalone is north part of our country the important bottom roosts the biological resources, has the very high economic value, also is a present prestige mirage item of important aquatic product increased reproduction production project.

参鲍鱼育苗中桡足类抗药性的研究摘要:海参鲍鱼是我国北方重要的底栖生物资源,具有很高的经济价值,也是目前威海市的一项重要的水产增养殖生产项目。

C.fatigans to Deltamethrin had a high resistance level in different regions of Jiangxi Province;The resistance to DDVP and Acetophenate showed apparent; The resistance to Bassa were not obvious.

摘 要 目的:探讨我省不同地区致乏库蚊对化学杀虫剂的抗药性现状。方法:采用浸渍法测定致乏库蚊幼虫的LC50。结果:不同地区致乏库蚊对溴氰菊酯均达到相当高的抗性水平;对敌敌畏和三氯杀虫酯的抗药性明显;对仲丁威的抗药性尚不明显。

To control tobacco black shank disease rationally, reduce resistance, 34 strains of Phytophthora parasitica var. nicotianae were isolated from 6 region of Yunnan province and all isolates were determined their resistance to metalaxyl. The results indicated that of all tested isolates, there were 12 high resistance, 5 middle resistance and 17 low resistance isolates respectively.

为合理防治烟草黑胫病,减少抗药性产生,从云南省6个地州分离烟草黑胫病菌菌株34个,就分离菌株对甲霜灵的抗药性进行了测定,结果表明,供试34个菌株中中高抗菌株12个,中抗菌株比例较高5个,低抗菌株17个。

The study of the biological characteristics of resistant phytopathogenic fungi has great theoretic and practical significance for improving the strategy of chemical pesticide application, postponing the occurrence of the resistance and advancing the chemical prevention and control of diseases caused by phytopathogenic fungi.

研究植物病原真菌抗药菌的生物学特征以及它们的抗药机制对于改进化学农药使用策略,延缓抗药性的产生,推进植物病害的化学防治,具有十分重要的理论和实践意义。

Rotenone to the development of solid or non-pollution of water-based pesticide formulations, developed into a highly efficient, low toxicity, low-residue, the environmental safety of pesticides, both to improve control, reduce weight, reduce costs, while Virtue a wide range of pests, to expand the scope of prevention, but also delay the emergence of resistant pests, the Company from Tephrosia vogelii extracted rotenone, can stimulate the growth of crops to stimulate the proliferation of crop chlorophyll, especially in fruits, vegetables, tobacco, and peanut and other crops have yield significant role in the company's use of the rotenone-crystal research and development, the preparation of new pesticide products market with unlimited business opportunities!

把鱼藤酮研制成无公害的固体或水基性的农药制剂,发展成为高效、低毒、低残留、对环境安全的杀虫剂,既能提高防治效果,减少用药量,降低成本,又能兼治多种害虫,扩大防治范围,还能延缓害虫抗药性的产生,本公司从非洲山毛豆中提取的鱼藤酮,能刺激作物刺激作物叶绿素增生,尤其对于果、蔬、烟、及花生等作物具有明显的丰产作用,使用本公司的鱼藤酮晶体研究开发、配制新农药产品具有无限的市场商机!

The changes in targets may decrease the effect of NTX insecticide; SI04 sequence has relationship with the propagation of diamondback moth.

它们的改变可能会影响到沙蚕毒素的作用效果;S104序列则可能与小菜蛾的生殖方面相关,目前认为抗药性的不稳定性与抗性小菜蛾的繁殖率降低有关。

Investigation of the resistance development of T. cinnabarinus to common used acaricides, analysis of the resistance inheritance, clarification of resistance mechanisms, comparison of the ecological fitness, estimation of the resistance realized heritability and assessment of the resistance risk would have theoretical and practical senses for protocol designing of resistance management and enriching the research contents of pest resistance.

研究朱砂叶螨对常用杀螨剂的抗性发展趋势,分析其抗药性遗传方式,明确其抗性发生机制,比较敏感、抗药性品系的生态适合度,估计其抗药性现实遗传力并作出抗药性风险评估,对制订螨类抗药性治理方案和充实有害生物抗药性研究内容有着重要的理论和实际意义。

The genetic study suggested that the carbendazim-resistance in these mutants could be steadily inherited by asexual and selfed reproduction, and the resistance was controlled by the same single major gene both in laboratory mutants and field resistant isolates, the different levels of resistance or the same resistant level in different strains maybe conferred by mutations at different sites or one site with different allelic mutations. The gene compensates for the sensitivity to MDPC was allelic to that governs the carbendazim resistance, but the mutation for increasing sensitivity to MDPC in this gene could get the pathogen highly resistant to carbendazim.

抗药性遗传研究表明,在所研究的抗药突变体中,抗药性在自交和无性繁殖后代中能稳定遗传;室內抗药突变体和田间抗药菌株对多菌灵的抗药性由同一个主效基因控制,但它们发生突变的位点不同或者同一碱基位点发生了不同的突变;对MDPC的敏感性也是由单个基因控制的,该基因与控制多菌灵抗性的基因是等位基因,当该基因发生对MDPC的敏感性增加的突变时会使病菌对多菌灵产生高水平抗性。

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According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm~150rpm时取得最大值,此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世,形体几无变化。

When I was in school, the rabbi explained everythingin the Bible two different ways.

当我上学的时候,老师解释《圣经》用两种不同的方法。