查询词典 blight

Tomato ; Late blight ; epidemic ; simulation model ; infection probability ; submodel

番茄；晚疫病；模拟模型；侵染几率；子模型；流行

In order to find new genes that participate in R3a and Avr3a interaction, a novel transgenic tomato plant conferred potato late blight resistance gene R3a and glucocorticoid-inducible avirulence gene Avr3a was constructed in our study.

将抗晚疫病基因R3a转入番茄，获了对马铃薯晚疫病菌小种特异性抗性的转基因植株，说明R3a基因抗病信号传导途径在番茄和马铃薯中的保守性，也为利用番茄研究马铃薯的抗病基因R3a提供了证据。

During 2000-2006, 508 samples of tomato late blight Pytophthora infestans from 8 tomato growing areas in Guangxi were collected and 239 pure isolates of the pathogen were obtained.

2000-2006年，从广西8个番茄产区采集了508份番茄晚疫病标样，分离纯化获得239个晚疫病菌株。

Objective Flumorph is one of the fungicides against cucumber downy , brassica downy mildew , grapedowny mildew and tomato late blight with the perfect effect of the prevention and treatment at the concentration of 100 - 200mg/litre.

目的 氟吗啉是应用于防治黄瓜霜霉病、葡萄霜霉病、番茄晚疫病、辣椒疫病和大豆根腐病的杀菌剂，使用浓度为100-200mg/L时，其防治效果较好，应用范围广泛，与人们生活关系十分密切。

The thickness of surface layer,thick angle tissue and vassular tissue were raised and the invasion and growth of Alternaria solani were hindered after applying K fertilizer,therefore the breaking－out time of the disease were delayed 3-4 d.Thus,the incidence of tomato early blight dropped.

32.0%和12%？22%。番茄茎角质层明显，厚角组织、维管组织厚度增加，占茎总横断面积比增大，细胞壁增厚，延缓茎发病时间3-4d，阻碍番茄链格孢菌的侵入和生长，使番茄早疫病发病率降低。

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。

In the experiment, the tea plant shoots were cultured in vitro, and inoculated artificially. The result showed the disease condition in vitro was basically consistent with that of the tea plantation in nature. Therefore, we thought this identification method of tea plant resistance to tea brown blight was feasible, especially a large number of cultivars.

本试验采用离体插枝培养法，人为造成伤口、人工接种并保湿对茶树品种进行抗性鉴定，室内人工接种与田间自然发病的情况基本一致，因此，可以认为此方法对茶树品种抗云纹叶枯病鉴定是可行的。

The colonization of the biocontrol strain on rice surface was closely related to the control effect of rice sheath blight.

同时生防菌在水稻叶片上定殖数量与水稻纹枯病的防效呈正相关的关系。

Thus, prevention and cure for rice stripe blight has become an important object in Shanghai farm.

因此，水稻条纹叶枯病的防治以成为上海农场的重要课题。

Rice stripe blight is a virus disease introduced mainly by Laodelphax striatellus Fallen. Rice stripe virus is a RNA virus and one of Tenuivirus members.

水稻条纹叶枯病是由水稻条纹病毒(Rice stripe virus，RSV)引起的一种病毒病，其传播介体主要是灰飞虱。

With Death guitarist Schuldiner adopting vocal duties, the band made a major impact on the scene.

随着死亡的吉他手Schuldiner接受主唱的职务，乐队在现实中树立了重要的影响。

But he could still end up breakfasting on Swiss-government issue muesli because all six are accused of nicking around 45 million pounds they should have paid to FIFA.

不过他最后仍有可能沦为瑞士政府&议事餐桌&上的一道早餐，因为这所有六个人都被指控把本应支付给国际足联的大约4500万英镑骗了个精光。