小种

Comparison of reaction for resistance spectrum to 20 strains including 10 Philippine races, 3 Japanese races, and 7 Chinese pathotypes between CBB23(carrying Xa23 )and IRBB21(carrying Xa21) was made.

比较了CBB23 (携Xa23)和IRBB21 (携Xa21)对20个菌系包括10个菲律宾小种、3个日本小种和7个中国病原型代表菌系的抗谱， Xa23抗所有20 个菌系；Xa21 抗19个菌系，对菲律宾10号小种则高度感病。

Isolates from watermelon-growing areas were classified into 3 races like race 0, race 1 and race 2 which were 8 (17.4), 30 (65.2), and 8 (17.4%), respectively. Pathogenecity of race 0 isolates are weakest which only make Sugar Baby susceptible; isolates of race 1 are intermediately pathogenetic, they make Sugar Baby and Charleston susceptible Gray but Calhoun Gray resistant; isolates belonging to race 2 possess the strongest pathogenecity, which make 3 hosts susceptible. Isolates of race 0 mainly distribute over the central and southern Hebei province, whereas race 2 cover the middle and north of Hebei, isolates of race 1 exist in the whole watermelon-growing areas in Hebei province.

根据鉴别寄主对供试菌系的抗感反应，将46个西瓜枯萎病菌系划分为0号、1号和2号3个不同的生理小种，分别包括8，30和8个菌系，占供试菌系的17.4%、65.2%和17.4%；0号生理小种菌系致病性最弱，仅使品种Sugar Baby感病，以冀中和冀南居多；1号生理小种菌系致病力中等，使鉴别寄主Sugar Baby和Charleston Gray感病，而使Calhoun Gray抗病，分布在整个河北省西瓜种植区；2号生理小种的菌系致病力最强，使3个鉴别寄主均能感病，主要分布在冀中和冀北。

Trace amounts of lapsang souchong are included in the Twinings company's Earl Grey blend.

别名： 正山小种，拉普山小种简介：小种茶经松烟熏制，有浓厚烟味。

Positive significant correlation between three infection indexes and SDD, and negative insignificant correlation between infection indexes and LIP were found. Fifteen sugarcane varieties could be divided into 6 groups on the basis of the distance more than 1.0. It resulted most ot tested sugarcane varieties had similar smut resistance. It suggested that smut race 1 and race 2 were included in inocula and the condition for Ustilago scitaminea infection was suitable in the crop season by setting up the standard varieties of NCo310, F134, NCo376 and Ya71-374 for smut identification. In addition, the results of sugarcane varieties resistant to smut race 1 and race2 were known by only a simple field trial.

结果显示：9个引进甘蔗品种中，ROC26属于感病品种，其余属于抗病或高抗品种；3个病情指数和持续发病期的两两相关均为显著正相关，潜伏侵染期与这些参数的相关为负相关，但未达到显著水平；在类间距离大于1.0的条件下，可将15个品种聚为6类，进一步明确了各品种抗黑穗病性的相似程度；抗性鉴定标准对照种NCo310、F134、NCo376和Ya71-374的应用，明确了接种源为小种1和小种2，通过一次接种试验，明确了供试品种对2个小种的抗性水平，标准对照种的抗性表现，还说明了本生长季发病条件基本是适宜的。

Wheat varieties and leaf rust samples of Hebei province were collected in 1982 and study of interaction between host and pathogen was made in 1983. The results expressed by virulence frequency showed that this method of investigation provided directly the information of the interrelationship between the wheat varieties and the rust fungus .

我科研组采取毒力频率来研究河北省小麦品种和河北省叶锈菌的相互作用，我们认为：这种研究方法能直接反应品种与菌株之间相互作用的情况，对生产者和抗病育种工作者提供的信息，要比小麦叶锈菌小种鉴定提供的以编号对小种命名的小种名单要有用得多。

The dominante race of SCN is still race 3 in Heilongjiang Province. But the SCN race 3 changed into race 4 and 14 in Daqing City and Anda City, indicating some changes happened in Heilongjiang. A distribution map of soybean cyst nematode in Heilongjiang was drawn , which made clear the style and distribution of SCN race in Heilongjiang, and provide the basis for soybean breeding for SCN resistance species and the rational distribution of resistant cultivars.2. Soybean cyst nematode, Heterodera glycines Ichinohe, populations were selected on eight soybean Glycine max L.

大豆胞囊线虫3号生理小种仍然是黑龙江省大豆胞囊线虫的优势小种，大庆市和安达市由原来SCN3号生理小种分别变为4号和14号生理小种，表明黑龙江省SCN生理小种稳中有变；绘制了黑龙江省大豆胞囊线虫分布图，明确了黑龙江省SCN生理小种的类型和分布，为抗线育种及抗线品种合理布局提供依据。2。

Libellula had different resistance to different races and Xiannong 4 was susceptible to all the races except CY18 and CY22. Resistant components had significant variances among different cultivars, races and cultivar×race. And Libellula had strong selection on different races, while the selection of Xiannong 4 was weaker than that of Libellula.

里勃留拉的抗性谱较宽，抗病性在小种间差异明显，而咸农4号对除CY18、CY22外的小种均感病；两者的抗病性组分在品种间、小种间以及品种×小种互作时均有显著差异；里勃留拉对不同菌系有较强的选择作用，而咸农4号的选择作用较弱。

According to a series of reaction of powdery mildew to different host, it could be confirmed that the disease was caused by Sphaerotheca fuliginea. There were two races, race 1 and race 2France, of which race 2 France was the dominant one.

根据一系列甜瓜白粉病菌鉴别寄主的抗感反应，初步确定北京地区瓜类蔬菜白粉病由Sphaerotheca fuliginea所致，且存在两个生理小种，即小种1和2France，优势生理小种是小种2France。

The research aimed to seek the difference on rDNA-ITS sequence between Focr 1 and Focr 4 biological races of banana fusarium wilt and provide basis for rapid detection of banana difference wilt race.

寻找香蕉枯萎镰刀菌1号生理小种和4号生理小种(Focr 4)在rDNA-ITS区段序列上的差异，为香蕉枯萎镰刀菌小种的快速检测提供依据。

The illumination is of no effect on the germination rate of oospores of Phytophthora sojae.30 single-oospore isolates obtained from the test strain of Phytophthora sojae Ps-H2 (Race 1 ) were evaluated using hypocotyl-inoculation method for race phenotype on soybean cultivars. One clone phenotype ( race 1 )was selected randomly for further isolation and virulence identify .

将大豆疫霉菌供试菌株Ps-H_2(生理小种1号)每代挑取30个单卵孢株，进行生理小种鉴定，随机挑选1株1号生理小种的单卵孢株继续进行单卵孢株分离和毒性鉴定，连续两代试验结果表明大豆疫霉菌原始菌株并朱出现毒性分化，表明原始菌株即为1号生理小种的毒性纯系。

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