病原菌

The results showed that the apolar fraction of the root exudates from the highly resistant cultivars could kill the pathogen. Those of the general resistant cultivars could inhibit the spore germination and hyphal growth,while the sensitive cultivars couldn't.

荧光显微镜观察结果表明：高抗枯萎病的品种根系分泌物的有机成分对病原菌孢子有致死作用，中抗品种的对病原菌孢子萌发、菌丝的生长有显著抑制作用，相反感病品种的根系分泌物则能够起促进作用。

Score GR and 30% Armure EC showed best inhibiting to mycelial growth, but the 10% polyoxin B DP was the worst. Leaves of four turfgrass species (Cynodon hybrid, Lolium perenne, Agrostis plustris, Poa pratensis) were inoculated with conidial suspensions of C.verruculosus.

喷雾病原菌分生孢子悬浮液于狗牙根、黑麦草、高羊茅、早熟禾等几种草坪草活体叶片上并保湿培养，在接种后不同时间点分别从每个寄主上取样，对样品进行组织透明、染色，观察病原菌对寄主植物的侵染过程。

Thetesting on the biological characterstic of pathogen Erwinia herbicola in vitro al-so verified that temperature and pH-value exerted great influence onpathogenic growth and multiplication.

室内病原菌生物学特性的实验也证实了温度和pH值影响病原菌的生长和繁殖，＜18℃的温度是病原菌生长的限制因子。

Result3 strains of endophytic fungi had growth peak when the pH value was 6.5-7.5,and could grow within pH of 4.0-8.5. Their acid-alkali adaptability was strong,in which the P-3 adaptability was the strongest. P-1and P-2 had the stronger inhibition to the Bacillus subtilis,Escherichia coli and Staphylococcus aureus,and P-3 only had the little inhibition to Escherichia coli. The 3 endophytic fungi all had inhibitory effect on Podosphaera leucotrlcha,Alternaria mali,and Gymnosporangium yamadae Miyabe,in which,P-1 had the better inhibitory ability.

结果3株内生真菌在pH值6.5～7.5出现生长最高峰，在pH值4.0～8.5都可以生长，酸碱适应性很强，其中P-3的适应性最强。P-1和P-2对枯草芽孢杆菌、大肠杆菌、金黄色葡萄球菌都有较强的抑制能力，而P-3只对大肠杆菌有很微弱的抑制能力。3株内生真菌对苹果锈病病原菌、苹果白粉病病原菌、苹果落叶病病原菌都有抑制作用，其中P-1的抑制能力较强。

Five new bacterial diseases of Ligularia fischeri, Vigna angularis , Brassica juncea var.japonica, Aconitum coreanum and Silybum marianum in Jilin province were firstly reported in the world; and their sympotoms of the diseases were described in detail. According to the configuration of the pathogens observed by electrical microscope, Gram staination, pathogenicity, cultural characters, physiological and biochemical characters, as well as G+C mol%, the pathogens were identified respectively .

首次报道了马蹄叶腐烂病、红小豆溃疡病、黄花乌头顶枯病、江户菜软腐病和水飞蓟软腐病在吉林省的发生，详细描述了该五种病害症状及危害情况；通过对分离的病原菌的电镜形态观察、革兰氏染色、致病性、培养性状、生理生化性状、G+C mol％等方面的测定，依据《Bergey's Manual of determinative Bacteriology》9th ed相关部分，初步确定了其病原菌的分类地位并对病原菌进行了室内药剂筛选。

With the exosomatic MIC detection method and antibiosis efficiency detection method determined the common alimentary canal pathogenic bacteria,air tube pathogenic bacteria and mammitis pathogenic bacteria,respectively.

采用体外最小抑菌浓度MIC检测法和抗菌效率检测法分别对常见的消化道病原菌、呼吸道病原菌、乳房炎病原菌进行测定。

The toxin is a secondary metabolizable production in the pathogenic process of many pathogens,which can cause necrotic spot of the host. So it is a poisonous factor and it is important to the pathogenic activity.

毒素是许多亲和性植物病原菌致病过程中产生的次生代谢产物，离体使用可造成相应的寄主表现坏死斑反应，因此是病原菌的毒性因子，对决定病原菌的致病性有很重要作用。

The allelopathic bioactivities on mycelial growth and the dose-activity relationships of two different Eucalyptus globulus leaves extracts,petroleum ether extract and chloroform extract,against five phytopathogens,Pyricularia oryzae,Rhizoctonia solani,Fusarium solani,Venturia pyrina,and Alternaria solani,were determined by mycelial growth rate method in PDA petri dish.

采用菌丝生长速率法，在PDA培养基上测定了蓝桉叶片的石油醚和氯仿提取物对水稻稻瘟病、小麦纹枯病、蚕豆根腐病、梨黑星病、番茄早疫病5种植物病原菌的化感作用，研究了蓝桉叶片的石油醚和氯仿提取物与病原菌的剂-效关系和提取物对病原菌菌丝生长速率的影响。

Bipolaris sorokiniana may affect turf grass to cause leaf spot, bud rot, seedling blight, root rot, sheath rot. The temperature range of colony growth is 10～40℃, the optimum 25℃. Conidia can germinate in the temperature range of 20～35℃, and germinate best at 28℃; Conidia germinate well on slide water surface, contrary to other different methods, and they can germinate well under given air condition, but germination is not strict with nutrition. The inhibiting test of 8 kinds of fungicide showed Sporgon 50WP was most effective, and the inhibiting effect of the others was well to the conidia germination.

Bipolaris sorokiniana能浸染草坪禾草叶片形成梭形病斑，并可导致芽腐、苗枯、根腐、茎基腐、鞘腐等症状；病原菌在10～40℃下能够生长，最适生长温度为25℃；病原菌分生孢子在不同萌发条件中以水平萌发较好；分生孢子萌发需要空气条件，但对营养要求不严格；在20～35℃下分生孢子均可萌发，以28℃下萌发最好；八种不同药剂对病原菌的抑制效果表明，50%施保功可湿性粉剂1500倍液效果较好，其抑菌圈直径和抑制分生孢子萌发率分别为46.2mm和81.3%，其他几种药剂对孢子萌发也有较好的抑制作用。

The pathogens of Elsinoe ampelina were isolated and purified from susceptible disease leaves of grape cultivar cultivated in Yangling, Shaanxi, China by the conventional tissue method. The total 24 strains of E. ampelina were obtained, and the strain YL108 was identified as the pathogens of E.

采用常规组织法对陕西杨陵葡萄黑痘病病原菌进行分离、纯化；共获得病原菌菌株24个；并对菌株YL018进行形态学鉴定、致病性测定及病原菌DNA同源性分析。

Do you know, i need you to come back

你知道吗，我需要你回来

Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书，王祥生，李德昌。安徽省首次发现嗜群血蜱。