丛

Chinaberry witches'broom, Ziziphus jujube witches'broom, Mulberry dwarf disease, JWB and Paulownia witches' broom phytoplasmas were identified by comparative studies of PCR amplify of phytoplasmal 16SrDNA、23rDNA and ribosomal protein gene, heteroduplex mobility assay, RFLP of PCR-amplified products (16S rDNA), cloning and sequence analysis of 16SrDNA and rp gene. An efficient procedure for rapid identification and differentiation of phytoplasmas was established, which could identify and differentiate phytoplasma collected from field.

通过对桑萎缩病、枣疯病、酸枣丛枝病、泡桐丛枝病和苦楝丛枝病植原体16SrDNA、23SrDNA和核糖体蛋白基因的PCR扩增、异源双链迁移率分析、16SrDNA PCR产物的限制性片段多态性分析以及植原体16SrDNA和rp基因的克隆和序列分析等比较研究，建立了一种快速确定未知植原体种类和分类地位的分子鉴别与鉴定优化程序；此程序可对田间采集的各种植物植原体样品直接进行快速鉴定和鉴别。

The contents include the computing of dimensions of cohomology of line bundles on non-primary Hopf manifolds and their applications to the existence problem of holomorphic structure or filtrable holomorphic structure on a continuous vector bundles; the structure and the computing of dimensions of cohomology of holomorphic vector bundles with trivial pull-back.

在这篇博士学位论文中，我们研究了非主Hopf流形上全纯向量丛，主要包括：非主Hopf流形上全纯线丛的上同调维数的计算，以及它们对连续向量丛上全纯。。。

The coppiced shrub remained two coppice shoots adding the parameters obviously of the number, the total length,1 the biomass of new branch and the number and biomass of leaf. 3. the leaf area decreasing with the increasing of adjusting degree.

在相同的生境下，三种调控措施中对基径、顶梢生长影响最明显的是2克隆株/丛与3克隆株/丛；2克隆株/丛的调控措施明显增加当年新生枝的数量、总长度、生物量以及叶片的数量和生物量；而叶面积随调控措施程度的增加有逐渐减小的趋势。

Hepcidin mRNA was expressed in the mice brain.Total RNA was extracted from choroid plexus, cerebral cortex, diencephalon and mesencephalon, cerebellum, medulla oblongata and pons in mice. RT-PCR analysis demonstrated that hepcidin mRNA was expressed in all areas of mouse brain, in choroid plexus the mRNA expression was highest, although its level is generally lower than that of liver. The PCR products were purified and verified the sequence.

小鼠脑内有hepcidin基因表达提取小鼠脑脉络丛、大脑皮层、间脑及中脑、小脑和脑桥与延髓组织总RNA进行RT-PCR表明，大脑皮层、间脑和中脑、小脑、脑桥与延髓、脉络丛均有hepcidin表达，其中以脉络丛表达较高，但与肝脏相比，表达量较低。

Plants involved in this association are most of the terricolous plants. The fungi related are classified in six genera of order Glomales, they are Glomus, Sclerocystis, Acaulospora, Entrophospora, Gigaspora and Scutellospora.

参与丛枝菌根形成的植物是大多数的陆生植物，参与丛枝菌根形成的真菌是隶属于球囊霉目6个属的真菌，即：球囊霉属、硬囊霉属、无梗囊霉属、内养囊霉属、巨孢囊霉属和盾巨孢囊霉属，它们共同的典型特征是在宿主根皮层细胞中能够形成树状的分支，即丛枝。

The results are as follws: 1 This study randomly selected typical and wild populations of Alpinia oxyphylla Miq measured and compared their number of stem per cluster, plant height, number of fruit ear per cluster, single panicle weight, fruit yield per cluster, 100-seed weight and fruit yield.

结果显示，不同居群间的形态特征有显著差异，其中株高，单穗重和果实百粒重的变异系数较小；单丛茎杆数，单丛果穗数，单丛果实产量的变异系数较大。

The result will provide basic information for genetic improvement, reasonable development, utilization, germplasm resources protection and crop genetic improvment of Alpinia oxyphylla Miq..

研究结果如下： 1 对海南典型野生分布的益智群落，测量单丛茎杆数，株高，单丛果穗数，单穗重，单丛果实产量，果实百粒重和果实产量等形态性状，并进行比较分析。

N IND sections, the picture of dysplasia neurons can be distinguished from the normal easily with a smaller cell and cytoblast diameter, a distinct increase of number, less and stain thickened cytoplasm, nucleolus exit or not.

ND病变肠段粘膜下及肌间均有巨神经丛，丛内各成分细胞均呈阳性反应，神经丛内有大量大小不等细胞，为胶质细胞与发育不良神经元，其中可见部分细胞胞体较大。

However, the economic loss in upper stands could be compensated with monetary gain from rattan plantations that generated considerable economic benefit. The level of economic gain and the increment of NPV by interplanting G.

与单株种植相比，丛栽能明显提高藤林的产量；进一步的经济分析表明，2株丛栽可获得最高的经济收益，因而在进行造林时以2株丛栽为宜。

According to the phytosociological theories and methods of Braun-Blanquet's school, the regional savanna vegetation of the dry-hot valleys of Yuanjiang river had been investigated. Based on the principle of fidelity degree, the typical 110 releves taken from every sampling stands of the dry-hot valleys were sorted up from below to upper into 15 Associations, then into 5 Alliances, 2 Orders and 1 Class. A synoptic classification system of Class-Order-Alliance-Association was established for the purpose to reflect deeply the characteristics of all syntaxa there in the aspect of plant component and their abundance-dominancy, presence, cover coefficient, life form, growth form, and ecological environment, community structure, species types and so on.

采用Braun-Blanquet植物群落学研究的理论与方法，对云南元江中上游干热河谷分布的植被进行考察研究，把各处取得较典型的110个样地记录按确限度的原则由下而上归类成15个群丛、5个群属、2个群目和1个群纲，建立了元江干热河谷萨王纳植被群纲—群目—群属—群丛分类系统综合表和15个群丛表，以全面深入反映全干热河谷植物群落各级分类单位中各植物种类组成的多优度、存在度、盖度系数、生活型和生长型等特征及其群落结构、生态环境和种型类别。

Objective To investigate the effects of interleukin-1 β converting enzyme gene on the biologic characteristics of ovarian cancer cells.

目的 探讨白细胞介素-1 β转换酶的表达，对卵巢癌细胞生物学特性的影响。

Campylobacter: This illness is the most commonly identified cause of diarrheal illness in the world.

弯曲：这种病是最常见的原因查明腹泻病，在世界上。