抗病

Bacteria AHL could be used as a new kind of plant disease resistance activator.

结论］细菌AHL有可能成为一种新的植物抗病激活剂。

Can alsoinduce release of active oxygen and extracellular alkalinization in tobacco suspension cells.

过敏反应是植物有效的局部抗病反应，超氧阴离子对于〓诱导的烟草过敏反应是必要的。

A pair of specific primers was designed from the sequenceand was used to amplify the genomic DNAs of Yangmai 5,6VS/6AL line,substitution line of 6V and amphidiploid of Triticum durum-Haynaldiavillosa.

根据该序列设计了一对特异引物，分别以感病对照扬麦5号，抗病6VS/6AL易位系，6V代换系，硬粒小麦-簇毛麦双二倍体及簇毛麦的基因组DNA为模板进行特异性扩增。

We suggest that this gene from amphiploid Am3 most likely belongs to a novel resistance gene, and temporary designated LrPS.

因此，双二倍体小麦Am3携带的隐性抗叶锈病基因可能是一个新的抗病基因，暂定名为LrPS。

Wheat germplasm lines were obtained from the posterity of Aegilops tauschii-Triticum Carthlicum amphiploid, and analysis results showed that the 30 germplasm lines have many excellent characters, such as multi-tillers, multi-spikes per plant, good disease resistance, large ear, etc., they are very useful in genetic improvemert of wheat.

从粗山羊草与硬粒小麦合成的双二倍体后代中选育出30个种质系，对其鉴定结果表明，它们的分蘖力、单株穗数、抗病性、穗长等性状表现优异，具有重要利用价值。

CH5026,a wheat breeding line developed by backcrossing a partial wheat-Thinopyrum intermedium amphiploid TAI7045 with susceptible wheat cultivar, exhibits the resistance to both powdery mildew and yellow rust.

CH5026是衍生于八倍体小偃麦TAI7045的抗病新品系，它兼抗小麦的白粉病和条锈病。

During the sudden social is the social vulnerable group for their anile bodies, weakening resistance against disease and relatively slender incomes all of those should be well-researched research.

在急剧的社会转型中，高龄老人由于生理机体的衰老，抗病能力减弱，收入相对匮乏，无疑是典型的社会弱势群体，值得我们很好的研究。

Biological characteristics of the pathogen and the resistance of 13 cultivars of tea plant to tea brown blight were studied by means of natural infection in the field and artificial inoculation in vitro. Resistant cultivars and susceptible cultivars of tea plant were divided. And the resistance mechanism was researched tentatively. The findings are as follows: 1 Some biological characteristics of the pathogenic fungus The experiment result showed: the optimum temperature for the growth of fungus mycelium was from 24 to 27℃, the optimum temperature for sporulation ranged 22 to 30℃. Treated at 54℃ in 10 minutes, the spores didn't germinate. The optimum pH for the growth of the mycelium was 5.1～5.9, the optimum pH for sporulation ranged 5.0～6.0. Light had no much effect on the growth of fungus mycelium, but had much effect on the reproduction of the spore.

首先，研究了茶云纹叶枯病病菌的生物学特性；其次，通过田间抗性调查和室内人工接种鉴定，对 13 个茶树品种进行了抗病性鉴定；第三，在前人研究的基础上，对茶树抗病机理作了更深入的研究，结果发现： 1 病原菌的生物学特性病原菌的分生孢子萌发的最适温度范围为 24～27℃，菌丝生长的最适温度范围为 22～30℃；致死温度为 55℃；菌丝生长的最适 pH 范围为 5.1～5.9，孢子萌发的最适 pH 范围是 5.0～6.0；光照对病菌生长速度及分生孢子萌发影响不大，但对其产孢的影响很大，特别是有光照与无光照处理之间差异显著，光照有利于分生孢子的形成。

A new method of using relative resistant index to reflect the ability of horizontal resistance to stripe rust was put forward.

研究了水平抗锈性，提出了用相对抗病性指数反应水平抗病性强度的新方法。

Aim at the influence factors about special field, cultivation system and cultivating level of rice in Shanghai farm, I studied characters of rice stripe blight occurrence on the Farm, investigated the disease resistance level and yield lose rate of different rice cultivars planted on the Farm, and made the suggestion about a synthetical control strategy for the disease in priority to adopt rice cultivars with resistance to the disease. Through investigation for the actuality of plant protection in Shanghai Farm and the examination of medicament for the disease, I gave an advice about the best chemical controlling method for the disease.

本研究的目的和方向：针对上海农场这一特殊地域因素、栽培制度、种植水平等因素的影响来研究农场水稻条纹叶枯病的发生特点；通过调查与试验上海农场不同品种的抗病性及产量损失，从而提出推广抗病品种的防治策略；通过调查与试验上海农场栽培制度下条纹叶枯病的发生特点，从而根据上海农场的特点提出综合防治的策略；通过对上海农场现有植保状况的调查与药剂试验，从而提出最佳化学防治方法。

The basic concept of FOP can be summarized as to further optimize effective prescription according to the standard of curative effects and with the aid of modern science and technology and theories of traditional Chinese medicine.

其基本内涵可概括为：以确有疗效的中药复方为研究对象，以现代科学技术和传统中医药理论为技术支持，以该复方所治病证的药效响应为评价标准，以优化重组疗效更优的新复方为研究目的。

Ever since our world has been a world, native forests have been indiscriminately exploited by man.

自从我们的世界一直是世界原生森林被任意剥削人。