抗病

Species in the genus Thinopyrum are important wild relatives for wheat improvement. They possess many desirable traits such as drought, cold and salt tolerance, long spikes and more florets, high protein concentration. It has also been found that some species are the source of resistance genes for rust and powdery mildew, and especially, the source of resistance to wheat streak mosaic virus and barley yellow dwarf virus .

偃麦草属植物是小麦遗传改良中的重要野生近缘种，蕴含抗寒、抗旱、耐盐碱及长穗多花、籽粒蛋白质含量高等优良性状，同时又是小麦锈病和白粉病的重要抗源，特别是在小麦条纹花叶病和大麦黄矮病等病毒病的抗病育种中发挥了重要作用。

Identification of disease and pest resistance was done by Institute of Plant Protection, Hebei Academy of Agricultural Science, and the variety demonstrated resistance to southern blight leaf; mid-resistance to stalk rot, corn Curvularia leaf spot; high resistance to northern blight leaf, corn smut, corn dwarf mosaic; and sensitive to corn borer.

项目简介：中单808由中国农业科学院作物育种栽培研究所选育，生育期126天左右，株高314cm左右，穗长21.8cm，2004年河北省农林科学院植物保护研究所抗病鉴定结果：抗小斑病，中抗弯孢菌叶斑病，茎腐病，高抗大斑病，瘤黑粉病，矮花叶病，感玉米螟。2005年西南生产试验中平均亩产571.29kg，比对照增产17.85%。

The studies showed that EMS was an effective mutagen for increasing variations of fatty acid content and composition in soybean oil.

现正进行抗病性、丰产性的培育。0.2％EMS对诱发大豆脂肪酸有益突变是有效的。

Generally, cultivation of a blast resistant variety in large-scale induce higher survival pressure to cause mutation in blast fungus Magnaporthe grisea that generates new virulence and enhances pathogenicity to result in resistance losing quickly in popular variety.

当大面积栽培单一抗病品种将会提高田间稻热病病原菌的生存压力，迫使病原族群产生变异，使得推广作物品种丧失抗性。

This study served as a basic research for resistance breeding,a study of factors which infleunced the growth of myceliuni of Phytophthora sojae and its zoospores production was carried out basedon R25 of? sojae.

本文围绕抗病育种这一中心，以大豆疫霉根腐病病原菌25号生理小种，对影响其菌丝体生长和游动孢子产生的因子进行了研究。

The lesion reaction type was recorded as Tan when there is not extensive necrosis around uredia, or RB when there is extensive necrosis around uredia.

鉴定为中抗的品种一般发病晚于感病品种，抗病品种上孢子堆持续产孢的时间也比感病品种短。

The transposon tagging and map based cloning is the major methods for disease resistance genes cloning in the past.

目前植物抗病基因的克隆方法主要有转座子标签技术和图位克隆技术。

The compatibility of both Gvirens and B.firmus was researched. The fermentation filtrate of Gvirens , under the concentration of 70%, had not distinct inhibitory activity to B.firmus, the biomass of B.firmus would decrease with above the 70% filtrate of Gvirens, but the fermentation filtrate of B.firmus had not inhibitive role to Gvirens. 7, The cooperation control of both Gvirens and B.firm to the pine needle blight was explored:(1) Pathogen inoculation happened prior to the bio-control treatment for 7 days, however, the disease index and control effect had not distinct differences in any treatments even if combination of the two antagonists, but the susceptibility for different kind of pine were different.(2)when antagonist and pathogen were inoculated at the same time, some control effect to the pine needle blight, including certain extent cooperation control of both Gvirens and B.firm were proved, but it wasn't distinct when two antagonists used separately, and the change of the antagonist concentration had little effect to the control effect.

G.virens与B.firmus对松赤枯病的协同控制显示：(1)预先接种病菌后(7天)再进行生物防治处理，不管那种情况，感病指数和防治效果在处理间差异不明显，浓度影响无显著差异，即使是两种生防制剂联合作用也未显著提高其防效，但不同树种间的感病性有明显差异；(2)领抗菌与病原菌同时接种，对松赤枯病有一定防治效果，两菌联合有一定的协同作用，两菌分别单独施用防效差异不显著，浓度变化对防效影响不大；(3)预先接种颇抗菌能显著提高防治效果，两菌联合处理防效更优，感病树种的感病指数可降至13一15，抗病树种的感病指数可控制在3%左右；在同一浓度下B.f1'r功US、叹叮厂即s间无显著差异，在同一领抗菌下，浓度愈高，防效愈高：松，(4)三种生防接种方式的平均效果分析表明，叹F行ens最高平均防效49.5%黑 B。

Adaptation: Both for plastic shed and open-field.

可在大棚或露地支架栽培，有抗病能力。

In this study,twomolecular markers were identified to be linked to in coupling phase to Pm12 andPm3b by using RAPD technique.The results are showed just as follows. 1、Cross was carried out between Pm12 as resistant parent and Chancellor assusceptible parent,and F1 plants from the cross were selfed to obtain F2 mappingpopulation.

本研究利用 RAPD 分子标记技术对小麦抗白粉病基因 Pm12 和 Pm3b 进行了分子标记分析，获得的主要结果如下：1、以 Pm12 为抗病亲本，Chancellor 为感病亲本，两者杂交的 F1代通过自交获得F2分离群体。

The basic concept of FOP can be summarized as to further optimize effective prescription according to the standard of curative effects and with the aid of modern science and technology and theories of traditional Chinese medicine.

其基本内涵可概括为：以确有疗效的中药复方为研究对象，以现代科学技术和传统中医药理论为技术支持，以该复方所治病证的药效响应为评价标准，以优化重组疗效更优的新复方为研究目的。

Ever since our world has been a world, native forests have been indiscriminately exploited by man.

自从我们的世界一直是世界原生森林被任意剥削人。