抗病

So cloning and marking the resistance gene of the downy mildew in cucumber are fundaments for disease resistance breeding of cucumber.

克隆和标记黄瓜霜霉病抗病基因，则是当前利用分子技术进行抗病育种工作的基础。

Physical, chemical and biological agents were main elicitors being applied, which can change morphology, physiology and biochemistry to improve the natural disease resistance.

能够有效诱导果蔬采后抗病性的因子主要有物理、化学、生物等，其机理是通过生态学和生理生化的变化来提高果蔬对病原菌的抗病性。

The objectives of the research were to screen molecular markers of sorghum resistant gene to the physiological strain No.3 of head smut with SSR. Bulked Segregation Analysis was applied in the study. Two segregation populations, restorer line population R population 2381R/Aisi and maintain line population Tx622B/7050B, were used in the research. The amplification bands of 94 pairs primers from 109 ones were clear and stable.

为了筛选高粱丝黑穗病抗病基因的SSR标记，以高粱抗病亲本(7050B、2381R)和感病亲本（Tx622B、矮四），及其杂交组合后代为材料，用CTAB法从叶片中提取高粱基因组DNA，通过SSR技术对高粱丝黑穗病3号生理小种抗性基因进行了初步筛选，结果表明：供试109对SSR引物中筛选出扩增条带清晰且稳定的引物94对。

It was found that there was no difference in the structure and constitution of defense genes between resistant and susceptible isolines, but the transcriptional expression of these three defense genes in resistant ...

结果表明，在玉米抗病和感病自交系间，没有发现防卫基因在结构和组成上的差异。但在受到玉米大斑突脐胞菌侵染诱导后，玉米抗病系中防卫基因在转录水平上的表达强度明显高于感病系。

The average of temporal niche breadth of mango anthracnose was 0.1177 according to disease index of leaf, while 0.2639 according to disease index of fruit.

时间生态位宽度指数分别为0.1177和0.2639，说明芒果炭疽病在时间维上的利用程度小，其发生和发展具有条件性；空间生态位宽度指数为0.7047和0.9040，病菌能够充分利用各空间资源；营养生态宽度指数为0.6662和0.5796，说明病菌可以侵染各品种，但品种间的抗病性有较明显差异，台农1号抗病性较强，红芒6号、凯特和白玉较易感病。

Maize dwarf mosaic is one of the devastating and widespread virus diseases in the world. Understanding the genetic mode of inheritance of resistance genes is the basis for effective selection in resistance breeding program.

玉米矮花叶病是世界上普遍发生、危害严重的病毒病害，挖掘优异抗源并开展抗病遗传规律的研究是进行抗病育种的基础。

In this study, we have cloned and identified two full-length cDNAs of OsBIMK2 and OsBISERK1, which encoding MAPK and SERK, respectively, and associated with benzothiadiazole induced resistance.

本文克隆和鉴定了水稻中与苯并噻二唑(benzothiadiazole，BTH)诱导抗病性相关的编码MAPK的OsBIMK2基因和编码SERK的OsBISERK1基因全长cDNA；研究了OsBIMK2基因和OsBISERK1基因在水稻—稻瘟病菌亲和与非亲和互作过程中的表达模式；原核表达了OsBIMK2基因，获得重组OsBIMK2蛋白，并研究了重组OsBIMK2蛋白的生化特性；克隆了OsBIMK2基因的启动子序列，并运用农杆菌介导的瞬间表达系统分析鉴定了启动子中参与基因表达调控的可能顺式元件；将水稻OsBIMK2基因导入烟草，获得过量表达OsBIMK2基因的转基因植株，这些转基因植株中防卫反应基因PR-1组成型表达，并提高了抗病性。

These suggested that active oxygen just is one of the symbols of plant defense response in wheat against powdery mildew, but it is not the decisive and the exclusive factor of resistance.

说明活性氧是植物抗病反应的一个指标，与细胞防卫反应的强度有关，但尚不是细胞抗病性唯一的、决定性的因素。

In order to find new genes that participate in R3a and Avr3a interaction, a novel transgenic tomato plant conferred potato late blight resistance gene R3a and glucocorticoid-inducible avirulence gene Avr3a was constructed in our study.

将抗晚疫病基因R3a转入番茄，获了对马铃薯晚疫病菌小种特异性抗性的转基因植株，说明R3a基因抗病信号传导途径在番茄和马铃薯中的保守性，也为利用番茄研究马铃薯的抗病基因R3a提供了证据。

Both of OsBIMK2 and OsBISERK1 genes were rapidly activated during 6h after BTH induction and maintained higher levels of tobacco brown spot pathogen Alternaria alternata.

转基因烟草T〓代植株中PR-1基因表现为组成型增强表达。抗病性分析表明，转基因烟草植株提高了对番茄花叶病毒ToMV和赤星病菌的抗病性。

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。