条锈病

Genetic analysis were carried out to identify powdery mildew and strip rust resistance genes in the F2 of Am6-4 amphiploid and wheat variety Jinan17. Results showed that resistances to powdery mildew and stripe rust were controlled by a single dominant gene respectively. 124 SSR primers from genome D were used for marker analysis, marker Xgwm98 150(150为下标) from the chromosome 6D was found to be linked to the new powdery mildew resistance gene with a linkage distance 20.42 cM; A special DNA band was amplified by primere xgwm33 in resistant stripe rust plants, resistance gene for stripe rust was localized on chromosome 1D, and the genetic distance between resistance gene and marker is 8.0 cM.

利用Am6-4与济南17F2分离群体进行白粉病和条锈病抗性基因的遗传分析结果证明，Am6-4中的抗白粉病和抗条锈病基因均为单显性基因；以124对D基因组SSR引物进行标记分析，引物Xgwm98在抗白粉病DNA池和单株中能扩增出特异标记带，标记与抗白粉病基因间的遗传距离为20.42cM，并将抗白粉病基因定位于6D染色体；引物Xgwm33能在抗条锈病DNA池和单株中扩增出特异标记带，标记与抗条锈病基因间的遗传距离为8.0cM，并将抗条锈病基因定位于1D染色体。

In this study, AFLP markers for YrSp gene were identified and SCAR markers were developed using the near-isogenic line YrSp/6 x Avocet S and its susceptible parent Avocet S as materials with the YrSp gene donor parent Spaldings Prolific as control. The main results were given as follows:1. A total of 225 primer combinations were used in AFLP analysis of the materials YrSp/6×Avocet S, Avocet S and Spaldings Prolific.

本研究采用AFLP分析方法，以小麦抗条锈病基因YrSp的供体亲本Spaldings Prolific、近等基因系YrSp/6 x Avocet S、轮回亲本Avocet S及由Avocet S和YrSp/6 x Avocet S杂交制备的F_2代分离群体为材料，开展了小麦抗条锈病基因YrSp的分子标记研究，取得了如下主要结果： 1。

PsCdc2 might be involved in primary hyphal growth and haustorium formation during early infection by regulating cell cycle of Pst. The present study would be helpful for understanding the essence of cell cycle control and provided basis for new chemical control of Pst.

本文首次报道了小麦条锈菌的Cdc2基因，为进一步揭示条锈菌细胞周期调控的本质及研究开发靶向Cdc2的新型农药，以及实现对小麦条锈病的新型药剂防治提供了理论基础。

Reaction of 24 Einkorn accessions to mixed inoculum of powdery mildew and stripe rust,and two T.urartu accessions UR204,UR206 and a T.monococcum accession MO205 were used for reaction to a set of 15 differential Blumeria graminis tritici isolates and 21 differential Puccinia striiformis isolates,respectively.Among them,UR206 was resistant to all 15 isolates,UR204 was resistant to 14 isolates except E11,and MO205 showed different resistant types.The results indicated that most likely UR206 and UR204 carried new powdery mildew resistance genes that were different from 18 known Pm genes and MO205 carried new stripe rust gene that were different from 24 known Yr genes.

本研究对24份一粒小麦分别进行了白粉病和条锈病混合菌种苗期接种鉴定，进一步分别用一套白粉病菌菌株(15个)对2份乌拉尔图小麦和条锈病菌小种(21个)对1份栽培一粒小麦进行接种鉴定，其中乌拉尔图小麦UR206能抵抗所有供试白粉菌菌株，UR204除对白粉菌菌株E11感病外，对其余菌株表现抗性；栽培一粒小麦MO205对不同条锈菌小种表现出不同的抗性反应，研究表明乌拉尔图小麦UR206、UR204和栽培一粒小麦MO205分别含有与已知抗白粉病和抗条锈病基因不同的新基因。

Octoploid tritielytrigia type TAI-7045 showed immunity to yellow rust and middle resistance powdery mildew. CH-9916 is immune to yellow rust in seedling and adult stages, powdery mildew in seedling and adult stages, and their powdery mildew middle resistance. These suggested that the high powdery mildew-resistance in Octoploid tritielytrigia TAI-7045 had probably been transferred into common wheat.

通过对条锈病及白粉病抗性评价，结果表明：亲本八倍体小偃麦TAI-7045、小偃麦衍生系CH-9916对条锈病表现免疫，对白粉病表现中抗，而另一亲本"晋麦33"对条锈病、白粉病表现高感，推测小偃麦衍生系CH-9916抗条锈病及白粉病的基因均来源于代换的一对染色体——亲本八倍体小偃麦TAI-7045即来源于中间偃麦草。

Wheat stripe rust, caused by Puccinia striiformis f.sp. tritici West., is one of the most important wheat diseases in the world, especially in China.

小麦条锈病是一种世界性病害，中国是世界上最大的小麦条锈病流行区，条锈菌又是一个相对独立的流行区系。

Researches for 32 years (1973-2004) conducted in Longnan, one region in China where wheat stripe-rust strain is labile, have shown that most wheat cultivars lost their resistance to stripe rust after 3-8 years, while Libellula and N.

在我国小麦条锈病常发易变区陇南地区，从1973年起对里勃留拉、N。斯特拉姆潘列、成农4号、清农1号、中梁5号和清农3号6个品种抗杀锈病的持久性进行了鉴定与分析。

Development of markers for wheat stripe rust resistance gene Yr26 Stripe rust, caused by Puccinia striiformis f. sp. tritici, is one of the most devastating wheat diseases worldwide. Development of resistant cultivars is the most economic, effective and ecological approach to control the disease.

小麦抗条锈病基因Yr26的SSR和STS标记小麦条锈病是由小麦条锈菌(Puccinia striiformis f.sp.stritic)引起的一种广泛流行的世界性小麦病害，培育抗病品种是防治小麦条锈病最经济有效且利于环境安全的措施。

Wheat stripe rust (Puccinia striiformis Westend. f. sp. tritici) is common and serious in China. Growing resistant cultivars is the most economic, effective and environment-friendly way to control the disease.

我国小麦条锈病危害普遍而严重，培育和应用抗病品种是防治小麦条锈病最经济、安全、有效的方法。

The resubstitution accuracy and the cross-validation accuracy were 100 percent and 81.82 percent for the data from Maerkang.

以四川马尔康、甘肃天水两地1988-2000年小麦条锈病发生情况和期间的气象资料数据为基础，利用判别分析方法对小麦条锈病的发生程度进行预测，建立了判别函数，四川马尔康、甘肃天水数据资料回代检验错分率分别为0、0.153 8，交叉验证错分率分别为0.230 8、

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。