查询词典 Ustilago

The most important diseases are caused by fungi,eg Ustilago Scitaminea Syd.However sugarcane is a nonsexual propagation crop with highly ployploidy and complex genetic background,breeding pathogens-resistance cultivals by using traditoonal breeding techniques will be a formidable task.

甘蔗是我国最为重要工业原料作物，近年来由于高产、高糖甘蔗品种的大面积使用，又缺乏相应的抗病品种，甘蔗病害日益严重，尤其是甘蔗的黑穗病、梢腐病等真菌病害常在蔗区大面积流行，严重影响甘蔗的产量和质量。

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。

A bacterium isolated from a soil sample collected in lakefront of Peigucuo Lake in Tibet showed strong inhibitory activity to Ustilago hordeum . it was identified as Bacillus polymyxa , named LN-176 based on a preliminary taxonomic study.

从西藏佩古错湖湖边的土壤中分离到一株对青稞散黑穗病菌具有较强抑制作用的细菌，经鉴定为多粘芽孢杆菌，命名为LN-176。

Zizania caduciflora is perennially hydrophytic herb that is a member of the Gramineae family, which is a swelling stalk after parasitized by Ustilago esculenta.

茭白(Zizania caduciflora Turcz Hand-Mazz)，为禾本科多年生水生宿根性草本植物，是受一种食用黑粉菌Ustilago esculenta P。

Examples of smuts are Tilletia and Ustilago.

例如腥黑粉菌属 Tilletia 和黑粉菌属 Ustilago 。

Ustilago crameri koern in our province is one of the major diseases in recent years, there are signs of increase.

谷子黑穗病是我省谷子的一个主要病害，近年来有加重的迹象。

A smut fungus of the genus Ustilago causing a smut disease of grains in which the entire head is transformed into a dusty mass of spores.

属于 us类的一种黑穗病菌类，引起谷物的黑穗病，其中整个头被变成了粉末状的孢子块。

Sugarcane smut caused by Ustilago scitaminea is a worldwide disease and causes serious damage to sugarcane.

甘蔗黑穗病是由黑粉菌（Ustilago scitaminea Syd。

The universal primers of ITS1 and ITS4 for fungi were used in amplification of genomic rDNA sequences. A target fragment was obtained by ITS-PCR. Then, the fragment is cloned into the vector of pMD18-T before sequencing. The result of sequencing showed that the fragment is 692 bp in length. The results of Blast in Genbank and the analysis of fungal rDNA systemic development show that the relation between this fragment to the fungi of Sporisorium is closest, while the relation between it to the fungi of Ustilago is much far. It suggests that the name of Ustilago scitaminea for sugarcane smut isn't consistent to the result of rDNA systemic development analysis. It still needs more experiments to support this hypothesis.

用真菌rDNA序列分析的通用引物ITS1和ITS4，通过ITS-PCR得到目的片段，克隆在pMD18-T载体上后进行测序，结果显示该片段的长度为692 bp，与Genebank中已报道的真菌序列进行Blast和系统发育树分析，表明所获得的序列与Sporisorium属真菌具有更高的亲缘关系，而与Ustilago属真菌的亲缘关系较远，这与一直沿用的甘蔗黑穗病菌的命名似乎并不吻合，有待进行更多的研究以证实。

Sugarcane smut caused by Ustilago scitaminea Svd.

由甘蔗黑穗病菌（Ustilago sictaminea Syd。

It has been put forward that there exists single Ball point and double Ball points on the symmetrical connecting-rod curves of equilateral mechanisms.

从鲍尔点的形成原理出发，分析对称连杆曲线上鲍尔点的产生条件，提出等边机构的对称连杆曲线上有单鲍尔点和双鲍尔点。

The factory affiliated to the Group primarily manufactures multiple-purpose pincers, baking kits, knives, scissors, kitchenware, gardening tools and beauty care kits as well as other hardware tools, the annual production value of which reaches US$ 30 million dollars.

集团所属工厂主要生产多用钳、烤具、刀具、剪刀、厨具、花园工具、美容套等五金产品，年生产总值3000万美元，产品价廉物美、选料上乘、质量保证，深受国内外客户的青睐