小麦的一种

A set of spelt monosomic lines as female parent were respectively crossed with wheat new variety SM96 and new line SM20005 to determine the chromosomal location of the gene conferring resistance to powdery mildew in both. Seeding of parents, F〓 and F〓 from monosomic F〓 were inoculated with race no. 15 of Blumeria graminis f. sp. tritici. Analysis of obtained data revealed that one major dominant resistant gene originating from wild Emmer in the variety SM96 and the line SM20005 was located on chromosome 4A.

为确定小麦新品种沈免96和新品系沈免20005含有的抗白粉病基因所在染色体，以一套斯卑尔脱单体系为母本分别与沈免96和沈免20005杂交，将亲本、F〓、单体F〓植株的F〓代群体在苗期用小麦白粉菌15号小种的单孢菌系接种鉴定，单体分析结果表明，沈免96及沈免20005所含源于野生二粒小麦的抗小麦白粉菌15号小种的1个显性主效基因位于4A染色体上。

In this study, the TaDREB1 gene sequences were isolated from four hexaploid wheat cultivars, three diploid relative-species and one tetraploid relative-species.

本研究旨在开发TaDREB1基因的SNP标记，同时摸索一种在普通小麦中开发SNP标记的可行方法，为加密小麦的遗传连锁图谱，发掘和利用小麦的优异抗旱种质资源提供一条新途径。

Changes of DBE activity of four cultivars had a single-peak curve, and the peak appeared in 14 d after anthesis. HPLC analysis showed that the activity of DBE to amylopectin was similar. There are two types of DBE in the wheat grains, one is isoamylase, and the other is limit dextrinase.

在灌浆过程中，淀粉去分支酶的活性均呈单峰曲线变化，灌浆中期活性最大；淀粉去分支酶对底物支链淀粉均具有相似的酶解活性；对灌浆中期小麦淀粉去分支酶进行的纯化结果表明，小麦籽粒胚乳中也存在2种类型的淀粉去分支酶，一种是以极限糊精为特异性底物的极限糊精酶，另一种是以支链淀粉为底物的异淀粉酶。

Plastic film is a modernization planting technique in droughty and semiarid area, it is adapted to wheat, cootten, corn, peanut and so on. Plastic film can save water, protract crop's vegetal time, increase production.

地膜覆膜是在干旱、半干旱地区推广使用的一种现代化种植工艺，适用于小麦、棉花、玉米和花生等农作物，能够达到节水、延长作物的生长期、增产等目的。

The results showed that there were differences between adaption and regulation of different wheat varieties by prophyl dihydro jasmonate, so as to show diversity of gas exchange parameters, such as photosynthesis, water usage, etc. There was no evident difference between the reaction of two spring wheats (Jinchun1 and 1608) and the winter wheat (Xiaoyan 22) to PDJ. Different parameters of different wheat varieties had inequable reaction to different concentration of PDJ. Photosynthesis rate, water use efficiency and stomatal limiting value were enhanced when PDJ concentration reached a high degree. At the same time, leaf transpiration rate and stomatal conductance decreased. Therefore, wheat could maintain normal physiological activities while environmental conditions were changed.

结果发现，面对类似激素双氢茉莉酸丙酯调控下的不同品种小麦适应与调节存在差异，从而导致光合和水分利用等气体交换参数的表现也存在差异；两种春小麦（金春1号、l608）和一种冬小麦（小偃22）之间对PDJ的反应没有明显的冬春性间的差别；对不同品种、不同参数，PDJ起到作用的浓度不同，但无论如何PDJ都有相同的作用，当这种激素达到一定的浓度后，就会增强小麦的光合速率和水分利用率，增加气孔限制值，降低叶片的蒸腾速率和气孔导度，从而在外界条件变化时保持体内水分、延缓气孔关闭，维持体内正常的生理活动。

For example,disease－resistant varieties of wheat have been crossed with high－yield wheat to combine these Quartz cuvettes .

比如，抗病小麦同高产小麦杂交，形成了一种具有双重特性的新的小麦品种。

Phenanthrenequinone itself is a pesticide, with antibacterial capability and can be used as a pesticide, wheat seeds, in the prevention and treatment of wheat scab, Smut good results.

菲醌本身就是一种农药，具有抑菌能力，可用作杀虫剂，处理小麦种子，对防治小麦赤霉病、黑穗病有良好的效果。

There are two filamentous wheat mosaic viruses transimitted by the plasmodiophoraceous fungus Polymyxa graminis :one is wheat spindle streak mosaic virusfirst reported in Canada and the other is wheat yellow mosaic virus first reported in Japan .

由禾谷多粘菌传播的线状小麦花叶病毒有两种，一种是加拿大首先报道的小麦梭条斑花叶病毒，另一种是日本报道的小麦黄花叶病毒。

Consequently an improved PAGE technology suitable for detecting results of breeds for resistant or sensitive species of powdery mildew in wheat was developed.

因此，我们研究出了一项利用聚丙烯酰胺凝胶电泳检测小麦白粉病抗、感特性的新技术，在工作中建立了一种适合于检测小麦基因组DNA结构差异的电泳方法。

In grain-filling stage, the qP values of evolutionary wheats decreased under water stress, while Shan253 and Changwu134 hadn't decreased, indicated that the effect of water stress on the re-oxidation in Q-A of modern wheat was slight, while before this stage, the electron transport from PSⅡto QA restrained by water stress was main factor of photosynthesis non-stomata limitation to modern wheat; The qNP values of hexaploid were higher than diploid and tetraploid wheat, indicated that the ability of using light energy

随小麦由二倍体向四倍体、六倍体及现代小麦进化，表观电子传递速率有增大趋势，其受水分胁迫影响的程度在花前期有加剧趋势，花前期栽培一粒、栽培二粒、普通小麦、陕253和长武134这五种小麦在水分胁迫下表观量子产额的降幅分别为5%、7.47%、14.29%、33.3%和53.49%，光饱和Pn的降幅分别为8.8%、26.14%、23.25%、44.22%和51.29%，光饱和点整体上也是下降的，且这三个指标的降幅随进化程度提高有增大趋势，表明小麦在进化过程中能量转换系统受水分胁迫影响的程度加剧；而在水分胁迫下，小麦的羧化效率和RuBP再生速率也均下降，下降的程

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