抗病

One type of important plant disease resistance, gene\|for\|gene resistance, is resulted from the interactions between products of the pathogen avirulence genes and their matching plant resistance genes.

植物抗病基因与病原物无毒基因产物间直接或间接相互作用导致产生的基因对基因抗性是植物抗病性的重要形式。

It is of great important to study the cercospora leaf spot resistance of sugar beet M14 which has No. 9 chromosome of Beta corolliflora Zoss in addition. After spraying with the Cercospora beticola Sacc.

甜菜M14品系由于附加了一条野生白花甜菜第9号染色体，因此，研究其是否具有抗病性以及抗病程度的强弱具有十分重要的意义。

Characterization of the tomato Cf4 gene for resistance to Cladosporium fulvum identifies sequences that determine recognitional specificity in Cf4 and Cf9 .

利用抗病基因保守区域设计引物，进行植物基因组DNA扩增，以得到与抗病基因相关的分子标记，许多学者都有过成功的报道。

The clustering analysis classified the 24 cultivars into 2 groups and 5 subgroups, which respectively corresponded to indica-japonica differentiation and known rice heterotic groups based on pedigree information and blast reaction.

聚类分析将供试品种划分为籼粳差异明显的2个类群和分群结果与其系谱关系及抗性基本吻合的5个亚群，表明候选抗病基因标记可用于水稻品种的遗传关系、水稻病害控制和抗病育种方面研究。

In this paper,the three methods of identifying resistant candidate genes by using homologic sequeces was expatiated.

本研究归纳和总结了三条发掘抗病候选基因的方法，旨在对作物抗病基因及其连锁标记的发掘起到一定的指导作用。

The sequence of amino acid of clone CR271 was highly homologic (61% identify and 76% similarity) to blight resistance gene Xal of rice to Xanthomonas oryzae pv. Oryzae. All other fragments showed significantly amino acidhomology to the NBS-LRR type resistance gene that have been cloned. The length of JR2 and JR3 fragments were 1321bp and 896bp respectively, which did not showed significantly homology on the level of amino acid and nucleotide acid to the sequences that have been known.

其中CR271与水稻白叶枯病抗病基因Xa1(AB002266)氨基酸同源性有61％相同，76％相似，其它片段与已克隆的NBS-LRR类抗病基因同源片段都具有较高的同源性；所获得的右翼序列JR2DNA片段长为1321bp，JR3DNA片段长为896bp，此两片段在核苷酸水平及氨基酸水平上均未找到有显著同源的序列。

Homologic sequences; Resistant candidate genes; Disease resistance genes; Cloning

吕香玲；卢峰；宋波同源序列；抗病候选基因；抗病基因；克隆

According to the results using near isogenic lines, durable disease resistance variety can be bred by introducing a strong resistance gene together with 2 to 3 other resistance genes.

依据对堆叠抗病基因近同源系的抗性分析，可得知导入一个抗性较高的基因，并搭配2至3个抗病基因，即可达成耐久抗性的目标。

Libellula had different resistance to different races and Xiannong 4 was susceptible to all the races except CY18 and CY22. Resistant components had significant variances among different cultivars, races and cultivar×race. And Libellula had strong selection on different races, while the selection of Xiannong 4 was weaker than that of Libellula.

里勃留拉的抗性谱较宽，抗病性在小种间差异明显，而咸农4号对除CY18、CY22外的小种均感病；两者的抗病性组分在品种间、小种间以及品种×小种互作时均有显著差异；里勃留拉对不同菌系有较强的选择作用，而咸农4号的选择作用较弱。

To determine the chromosomic location of genes, material of monosomic Chinese Spring was applied, XiaoYan6 was crossed with Ming xian169 and F3 lines were obtained from self-pollinated monosomic F2 plants.

结果表明，小偃6号对菌系CY29-mut3、CY31和Su-4的抗病性由1显1隐两对基因独立遗传控制；对菌系CY30和CY32的抗病性由2对互补显性基因控制。

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。