植物的

Although other studies have recognized that the oak trees are in decline in the East and Midwest, this new work is the first to look at how the loss of the oaks has affected the understory plants , those that grow alongside the trees.

尽管其他的研究已经认识到东部和中西部的橡树正在减少，但是这项新研究首次注意到橡树的消失对林下植物的影响。林下植物是指在森林树旁生长的植物。

In this paper, the Medicine Resource Science studies of Radix Bupleuri also have been summarized. It shows that the genus Bupleurum are good pattern plants for the systematic study of biosynthesis of secondary metabolites at the molecular level.The genus Bupleurum (Apiaceae/ Umbelliferae) has around 150 species in the world, and the majority of which are distributed on northern hemisphere.

同时，本论文对中药柴胡的资源学研究内容进行了概述，结果表明国内外对于柴胡属植物的研究已有相当深度和广度，同时柴胡属植物具有丰富的种质资源和遗传多样性，因而适宜作为多种次生代谢产物生物合成途径以及相关蛋白质与基因系统研究的模式植物加以研究。

Floricultural Research Institute, Guangdong Academy of Agricultural Sciences, Guangzhou 510640） 2（College of Life Sciences, South China Agricultural University, Guangzhou 510640）Abstract Orchidaceae is one of the largest families of flowering plants.

兰科植物是开花植物中最大的家族之一，分子标记技术应用于兰科植物的分类鉴定和品种鉴别，为兰花的分类提供了分子水平的证据，也为兰花保护策略和措施的制定提供了理论基础。

We measured the light transmittance, reflectance and photosynthetic capacity of leaves of Mikania micrantha and 19 other species of plants (herbal and woody sp.) in the same community. M. micrantha and other plants were similar in transmittance and reflectance spectra and showed no apparent differences in the relation between leaf-optical and photosynthetic-related in the same community.

该文对薇甘菊及其所在群落内19种植物的叶片透射率、反射率和光合特征指标进行了测定，结果表明：薇甘菊与其它植物透射和反射图谱的变化趋势都比较相近，在各个光学特征指标与光合相关指标的相互关系中，薇甘菊并没有表现出区别于同一群落内其它植物的特征。

Phytase mainly comes from plant and organism, phytase of plant belongs to 6-phytase and it s optimum pH ranges from 5.0 to 7. 5. Plant phytase can not function effectively in monogastric animals and it is not rich in plant. So research direction about phytase is turned to Aspergillus niger which is rich in acid phytase.

植酸酶主要来自于植物和微生物，来源于植物的植酸酶均属于6—植酸酶，最适pH范围在5.0—7.5，不适合在单胃动物中起作用的，而且在植物中含量极低，因此植酸酶的研究方向转向最适pH值为酸性、酶含量较高的丝状真菌。

Hengduanshan Mountain, locating in Southwest of China, is regarded as the centre of origin and evolution of genus Pedicularis, where species with all corolla types are present.

我国的横断山脉地区被认为是该属植物的起源和演化中心，分布了该属植物所有花部特征的代表类群，是该属植物的全球分布中心。

ABSTRACT Pedicularis species provide ideal materials to study flower evolution, pollination biology, and plant speciation for their substan...

马先蒿属植物以其丰富的花部变异为研究植物的花部进化与传粉适应，传粉生物学以及植物的物种形成提供了理想的材料。

ABSTRACT Pedicularis species provide ideal materials to study flower evolution, pollination biology, and plant speciation for their substantial variation in floral design.

马先蒿属植物以其丰富的花部变异为研究植物的花部进化与传粉适应，传粉生物学以及植物的物种形成提供了理想的材料。

In the light of looking up -finishing-inquiring into the literature,The subject ntegratedly applied the knowledge of botany and phytotomy and Authentication of Chinese Medicines and the experimental technology to study taxonomy and anatomy of Cornus chinense Wanger and its kindred plant.To combine the knowledge of natural medicinal chemistry instrumental analysis,pharmaceutical analysis and experimental technique,Glycosides chemical components of Cornus chinense Wanger and its kindred plant were qualitatively analysised by using TLC.

以文献查阅-整理-调查为基础，综合运用植物学、植物解剖学、中药鉴定学知识与实验技术对川鄂山茱萸及其近缘植物进行分类学处理与解剖学研究，结合天然药物化学、仪器分析、药物分析等学科的知识与实验技术，用TLC定性分析川鄂山茱萸及其近缘植物的苷类化学组分；用HPLC测定川鄂山茱萸不同器官、细胞组织、果实不同采集期的熊果酸、马钱苷的含量并进行色谱条件优化。

Potamogeton malialaianus was the dominant species of submerged plants in , but the rate of swamp forming is more rapidly due to the increasing sedimentation and rapid growing of emerging plant and leaf - floating plant after .

高等水生植物在50年代以马来眼子菜为主，但进入90年代后，随着挺水植物，浮叶植物的逐步扩展，沉水植物的覆盖率和生物量日益降低，湖底的淤积和部分湖区沼泽化的进程加快。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。