小麦

The heterosis of grain hardness of interspecific hybrid between common wheat and spelt wheat or club wheat were usually negative except that of hybrid between common wheat variety Nongda 3226 and spelt wheat or club wheat.

普通小麦与斯卑尔脱小麦的种间杂种、普通小麦与密穗小麦的种间杂种的籽粒硬度均表现负优势，但农大3226所配的组合的籽粒硬度多为正优势。

The average heterosis of spike number per plant and 1 000-grain-weight were high and obviously related to yield heterosis at 0. 01 and 0. 05 level, respectively; the average yield heterosis of F1 hybrids between common wheat and club wheat was 77. 19%(ranged from-2. 18% to 143. 42%), the average heterosis of spike number per plant and spike grain number were high and both was also obviously related to yield heterosis at 0. 01 level.

结果发现：小麦种间杂种在产量上具有明显的杂种优势，其中斯卑尔脱小麦与普通小麦所配的30个种间杂交组合产量杂种优势平均为109.24%(43.14%～187.96%)，单株穗数及千粒重平均优势较大且与产量优势的相关分别达极显著水平和显著水平；密穗小麦与普通小麦所配的30个种间杂种的杂种优势为77.19%(-2.18%～143.42%)，单株穗数和主穗粒数优势较大且与产量优势的相关均达极显著水平。

The SCA effect was important in the heterosis of the spike number per plant of the intervarietal hybrid, the SCA and GCA were both important in the heterosis of the grain number of main spike of the intervarietal hybrid; the SCA effect played an major role in the heterosis of the spike number per plant of the interspecific crosses of the common wheat and club wheat, the SCA effect played an major role in the heterosis of the 1000-grain weight of the interspecific crosses of the common wheat and spelt wheat.

普通小麦品种间杂种每株穗数杂种优势中，特殊配合力所代表的非加性遗传效应起了主要作用，而主穗粒数杂种优势中一般配合力、特殊配合力所代表的加性、非加性遗传效应所起的作用相当；普通小麦与密穗小麦种间杂种主穗粒数杂种优势中特殊配合力所代表的非加性遗传效应起了主要作用；普通小麦与斯卑尔脱小麦间杂种千粒重杂种优势中特殊配合力所代表的非加性遗传效应起了主要作用。

The results showed that N fertilizer could improve the nutrition quality of wheat, increase paste strength and flexibility, but decrease paste ductibility.

试验结果表明：施用氮素化肥能明显改良小麦品质，提高小麦营养品质，增强面团强度和筋力，降低面团的延展性；施用有机肥有利于提高小麦营养品质，增强面团强度和弹性，有机肥对小麦品质的影响作用小于氮素化肥；施用磷素化肥对小麦营养品质无明显影响，但会降低面团强度和筋力，增强面团延展性。

Based on the analysis of the requisites of glutenous wheat in China, the developmental advantages of the wheat in Shaanxi province and the major factors limiting the qualities of glutenous wheat, the paper put forward the systematic cultivation techniques, showing the great significance for the increase of quality and quantity of glutenous wheat, for the enlargement of total protein amount of the society and the improvement of people's living standards.

为此，本文从我国强筋小麦品质指标要求及陕西发展强筋小麦的优势入手，在分析影响强筋小麦品质主要因素的基础上，提出优质强筋小麦配套栽培技术。对提高强筋小麦产量和质量，增加蛋白质的社会总量，改善人民生活有着极其重要的意义。

From Apr.1st to Oct. ninth, when two-year-old Onobrychis viciaefolia 、one-year-old Onobrychis viciaefolia 、Triticum 、Triticum aestivum/ Vicia villosa 、Triticum aestivum/ Brassica campertris 、Triticum aestivum-Vicia villosa and Triticum aestivum-Brassica campertris are planted, their content of soluble salt in 0～20cm soil layer are lower than that in uncovered soil, in the period of harvest , they decrease 0.361%、0.331%、0.141%、0.327%、0.312% and 0.317% respectively.

从时间变化分析，采用二年生红豆草、一年生红豆草、单作小麦、小麦/毛苕子、小麦/油菜、小麦-毛苕子和小麦-油菜7 种绿色覆盖模式时均使土壤表层盐分含量比同期裸地的低，生育期末分别降低了0.361%、0.331%、0.141%、0.327%、0.312%、0.321%和0.317%。

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。

However, the use of Aegliops tauschii in improvement of wheat yield trait has not been reported. In this study, T.durum-Ae.Squarrosa amphidiploids was crossed with common wheat PH85-16, then backcrossed with PH85-16. The variation characteristic of the main yield traits of BC1F1 and BC1F2 were analyzed. Then, QTLs affecting yield traits were detected by 130 SSR primer pairs of D genome in BC_1F_1 and BC_1F_2.The result showed chromosomes in D genome from Aegliops tauschii affected yield trait of wheat significantly.

本研究以二倍体小麦粗山羊草与四倍体硬粒小麦合成的双二倍体Am6为亲本，与普通小麦PH85-16 进行杂交，再用PH85-16 进行回交，对获得的回交后代进行了主要产量性状调查，利用位于小麦D 基组的SSR 分子标记进行了分子标记分析，对来自粗山羊草与产量性状相关的数量性状位点进行定位，探讨粗山羊草对小麦产量性状的影响。

Filed experiments of 2001 showed that treatments with fungicide either 2 days before or 2 days post inoculation, tebuconazole reduced the disease index of the spikes by 80.32% and 70.64, as well as increased grain yield by 12.95% and 8.74% in comparison to the untreated control. Application of metconazole led to decreases of the disease index by 80.5% and 68.0% and increases of grain yield by 11.41% and 11.45% compared with the untreated plants. In 2002, with the serious occurrence of the head blight, tebuconazole reduced the disease index of the spikes by 76.47% and 78.67% and metconazole reduced the disease index by 82.06% and 81.89% in comparison to the untreated control.

田间药效测定结果表明：与对照相比，接种前2d喷药与接种后2d喷药，2001年，戊唑醇可使小麦赤霉病病情指数分别减少80.32%和70.64%，产量增加12.95%与8.74%；羟菌唑可使小麦赤霉病病情指数减少80.5%和68.0%，产量增加11.41%和11.45%；2002年，在小麦赤霉病严重发生的情况下，戊唑醇能使小麦赤霉病病情指数减少76.47%和78.67%，羟菌唑能使小麦赤霉病病情指数减少82.06%和81.89%，产量增加极显著。

With conventional PCR primer pair XBFF/R,the same 352bp bands appeared by amplifying all the DNA samples from the eight races,and no bands appeared by amplifying all the DNA samples from the 9 plant pathogen species(Cucumber powdery mildew,wheat yellow rust,wheat leaf rust,wheat stem rust,wheat scab,wheat sheath blight,wheat loose smut,maize sheath blight and maize head smut)and control.

3用常规PCR和实时荧光PCR两种方法对温室接种的小麦白粉病进行了检测，并在时间上与自然显症的观察进行了比较，结果表明：在温室条件下，小麦白粉病菌在接种后第5d时开始出现小麦白粉病病斑，而利用常规PCR引物XBFF/R可在接种第3d检测到小麦白粉病菌，比自然显症观察能够提前了2d检测到白粉病菌；实时荧光PCR法可在接种后1d即能检测到小麦白粉病菌，比自然显症观察能够提前了4d检测到白粉病菌，这可为白粉菌的预测或预警检测提供依据，更可为白粉病在流行前制定防治决策赢得宝贵时间。4。

The concept of equivalent rotationally rigidity is offered and the formula of rotationally rigidity is obtained.

主要做了如下几个方面的工作：对伸臂位于顶部的单层框架—筒体模型进行分析，提出了等效转动约束的概念和转动约束刚度的表达式。

Male cats normally do not need aftercare with the exception of the night after the anesthetic.

男猫通常不需要善后除了晚上的麻醉。