叶霉病

A new physiological race of leaf mould Fulvia fulva ( Cooke Ciferri 1.2.3.4.9 was detected by continuous investigating and sampling from tomato production in Beijing area for several years.

通过对北京地区番茄叶霉病菌生理小种分化的连续监测，发现了可侵染目前生产上主栽抗叶霉病品种的新小种。

It can cause heavy losses of tomato production and friuts' quality. According to the researches of internal and external country, This review summarized the main symptoms of Fulvia fulva of tomato caused by cladosporium fulvum , the biological properties, including to form character, temperature and humidity of mycelium and spore, the outbreak of the disease, regularity of epidemic, race differentiation of different area, Maofen 802,Shuangkan 2No.should be chosen. In resisting disease ,mode of action, gene clone,gene structure,gene function and control methods of the disease.

根据国内外关于番茄叶霉病的研究情况，综述了番茄叶霉病的发病症状；病原菌的生物学特性，包括病菌的形态特征以及适宜菌丝和孢子的生长温度（20~25℃）以及湿度（85%以上）等条件；病害的发生条件和流行规律；不同地区病菌生理小种的分化情况；生产上应选用毛粉802、双抗2号等抗病品种；番茄与病菌之间的作用机制；番茄Cf及ECP等抗病基因的克隆、结构和功能及病害防治等方面的研究情况。

Fifty Fulvia fulva single-spore isolates were collected in2002and2003from protected fields in several regions of Liaonˉing Province.

番茄叶霉病是由褐孢霉引起的病害，主要为害番茄叶片，严重时也为害茎、花、果实。

Twenty two strains(14 bacteria and 8 actinomyces strains) of antagonistic microorganisms against Fulvia fulva were isolated from vegetable field soil.

从蔬菜地田间土壤中筛选出对番茄叶霉病具拮抗作用的22株菌株，其中14株细菌，8株放线菌。孢子萌发抑制试验表明，细菌X14菌株和放线菌F15菌株的发酵液及其离心后上清液对番茄叶霉病菌孢子萌发抑制率均达100%。

They are high resistance to leaf mould, resistance to virus and Fusarium wilt.

高抗叶霉病，抗病毒病和枯萎病，平均每 667m2 产量 5000kg 以上。

The varieties resistant variety of diseases, such as high resistance to virus diseases and bacterial wilt, early blight resistant, gray mold and leaf mold resistance, low temperature, low light, setting a high rate, non-deformed fruits and empty fruit, the results of a single inflorescence 15 ~ 35, merchandise fruit rate of more than 98% for tomato production in Hebei Province has provided a fine new varieties.

品种抗多种疾病，如高抗病毒病和青枯病，抗早疫病，灰霉病和叶霉病性，低温，弱光，设置率高，不变形的水果和空果，单一花序结果1535，商品的98％以上番茄果实河北省产出率提供了一个优良新品种。

Single PCR reaction with two pairs of PCR primers designed on the markers respectively tightly linked with Cf-9 and Tm-1 genes in tomato, which be resistant to leaf mold and tomato mosaic virus. For the genes the PCR products were almost completely correspond to the amplified bands produced by single PCR primer.

利用同一PCR反应体系，对分别与番茄抗叶霉病的Cf-9基因和抗番茄烟草花叶病毒病的Tm-1基因紧密连锁的PCR标记进行了同时扩增筛选，扩增的特异性片段与单引物扩增片段吻合。

With a F2 population between a resistant and a susceptible parent (03036×03748), the linked marker was screened by BSA method and RAPD technology. Two specific bands were found at the 500 bp region using F2-based bulked segregant analysis plants.

以番茄抗叶霉病和感叶霉病亲本组合(03036×03748)的F2分离群体为研究材料，采用BSA法和RAPD技术筛选与抗病基因连锁的分子标记。

Several varieties of tomato with different degrees of resistance to cladosporium fulvum were used to study the changes in phenylalanine ammonia lyase activity and lignin conten as well as their correlationship with the resistance degree of varieties and pathogeny during inoculation.

以含对叶霉病不同抗性基因的番茄品种为材料，研究了叶霉病菌侵染过程中PAL酶活性和次生代谢物木质素含量的变化与品种抗性、病原菌生理小种间的相互关系。

He resistance pattern of a F_2 population derived from cross of HN19 andHN16 was analyed thrugh inoculation with Cladosporium fulvum.

本研究选取含番茄抗病基因Cf-19的HN19和对番茄叶霉病感病的HN16为感病亲本材料，及其有性杂交的F_2分离世代的种子为试验材料。

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