查询词典 plant morphology

In this research, swainsonine contents of three Oxytropis species were determined by the high performance liquid chromatography coupled to mass spectrometry. The population genetic diversity was also studied and the swainsonine related molecular markers were screened by ISSR. In vitro fungi cultures from the individual plant of O. glabra were performed and microbiological morphology of the colony and the conidiophore were investigated. The 5.8S rDNA/ITS sequences of fungi amplified from total DNA in both plants and fungal endophytes were studied. These sequences were analysed and compared, and they were also compared to the 5.8S rDNA/ITS sequence of fungal enduphyte Embellisia sp. L12 from the O.lambertii, O.sericea and A.mollisimus distributed in USA.

本研究采用高效液相色谱-质谱联用法测定了三种棘豆植物的苦马豆素含量；通过ISSR分子标记技术对三种棘豆种群遗传多样性及其苦马豆素相关标记进行了研究；将小花棘豆植物单株进行体外真菌培养，研究了菌落和分生孢子的微生物形态学特性，从植物总DNA和相同植株培养的真菌总DNA扩增真菌的5.8SrDNA/ITS区，进行了DNA序列分析与排序；联系单株小花棘豆的苦马豆素含量测定和内生真菌ITS序列分析结果，与从美国分布的二种棘豆(O.lambertii、O.sericea)和一种黄芪(A.mollisimus)中分离的内生真菌埃里砖格孢属Embellisia sp.L12株得到的结果进行了比较。

Rigidula, distribution of Ph. rigidula and its host plant, its morphology, anatomy and chemical components were discussed in this dissertation.

协同进化的观点是探讨生物多样性形成机制的一个新的重要理论基础，对于植物与植物间的协同进化还没有人研究过。

More information is needed on variation within populations, particularly in mericarp morphology, to assess the status of the awnless species of Sida , as there are indications that awned and awnless mericarps can occur on the same plant, thereby suggesting a possible reduction in species numbers.

更多的信息被在居群内在变化上需要，特别是在分果爿形态学方面，评价Sida的awnless种的地位，éveill é作arvensis那些Scrophulariaceae Merrill(花期，看见中国18： 86.1998)。

The journal founded in 1902, publishes original research papers (especially those with regional emphasis on western Europe and tropical Africa), review articles, short communications and book reviews on the systematics of all plant groups and fungi, also covering related fields such as phytogeography, evolution, comparative morphology, pollen and spores, and vegetation studies.

杂志创刊于1902年，刊载原始研究论文（尤其是关于西欧和热带非洲地区的投稿），评论文章，短通讯和书评，内容涉及所有植物群和真菌的系统分类学，同时也包括相关的领域，例如植物地理学，进化，比较形态学，花粉和孢子，以及植被研究。

For assisting identification of crude drug Herba Dendrobii. Methods Morphological and histological studies were carried out on 11 medicinal plant roots in Dendrobium Sw. by microstructural observation. The 11 species were divided into three groups according to their stem morphology: a pair fleshy-stem group, including D. chrysanthum, D. crepidatum, D. primulinum, D. hercoglossum, and D. crystallium; b thick-and rigid-stem group, including D. fimbriatum and D. aurantiacum var. denneanum; c node-or inter- node- bulgy-stem group, including D. findlayanum, D. gratiosissimum, D. pendulum, and D. wardianum. The surface descriptions of velamen were conducted for D. fimbriatum and D. aurantiacum var. denneanum which are similar in characters of cross section.

方法利用形态组织学方法，对茎多肉质的束花石斛Dendrobium chrysanthum及其易混的玫瑰石斛D.crepidatum、报春石斛D.primulinum、重唇石斛D.hercoglossum、晶帽石斛D.crystallium；茎粗硬的流苏石斛D.fimbriatum及其易混的叠鞘石斛D.aurantiacumvar.denneanum；茎节或节间肿胀的棒节石斛D.findlayanum、杯鞘石斛D.gratiosissimum、肿节石斛D.pendulum和大苞鞘石斛D.wardianum共11种药用石斛根进行显微结构研究；对根横切面结构相似的流苏石斛和叠鞘石斛，配合进行了根被表面制片观察。

With field pot experiment, the effects of two dosages of enhanced UV-B radiation on the morphology, physiology, biomass allocation, and chemical composition of C4 plant Amaranthus retroflexus were studied.

通过大田盆栽实验，研究了2种增强的UV-B辐射对双子叶C4植物反枝苋形态、生理、生物量分配及化学成分的影响。

Blumea was published in 1934, it is an international journal containing papers on descriptive botany (taxonomy, plant-geography, morphology, and anatomy) of Phanerogams as well as Cryptogams.

该刊创刊于1934年，是国际性期刊，刊载论文内容包括显花植物和隐花植物的描述植物学，即植物分类学、植物地理学、形态学和解剖学范畴。

It was concluded that Glomus mosseae inoculation improved the drought resistance of Broussonetia papyrifera Vent, especially in moderate stressed conditions. And the contribution of AM symbiosis to plant to avoid the stress or to increase its tolerance might be the result of modification of root morphology and fractal character.

由此作者认为，接种G.mosseae在不同土壤水分条件下促进了构树幼苗的生物量积累，这种促进作用在土壤干旱条件下尤为明显，表明AM菌根真菌G.mosseae提高了宿主构树的抗旱性；G.mosseae对宿主构树抗旱性的提高与G.mosseae对构树根系形态特征、分形特征的改变密切相关。

Potaninia mongolica Maxim, is recorded in the Chinese plant red book in 1992, as one of rare and endangered plant. More and more attention has been paid to its important ecological effect, ancient floristic geographic element, specific morphology of cardinal number three in Rosaceae and also to its obvious economic value.

绵刺是国家二级重点保护的珍稀濒危植物，1992年被收录于中国植物红皮书，它以独特的三基数形态特征而区别于蔷薇科其它植物，同时绵刺在阿拉善荒漠中具有不可替代的生态作用、古老的区系地理成分、重要的经济价值等诸多特点越来越引起人们的重视。

In order to disclose the adaptive strategies and capacity of Potaninia mongolica Maxim, acquired during its evolution history, the whole response system, which was composed of individual morphology plasticity response, organs anatomy structure response, physiological function response of anti-arid and anti-hotness, activities of protective enzymes response, endogenous hormone adjustment response, sexual reproduction strategies response of seeding, dispreading, sprouting and renewing, asexual reproduction strategies response of clonal growth patterns, clonal growth architectures, clonal growth architectures plasticity, heterogeneous resources utilization strategies, endogenous hormone distribution in clonal organs, foraging behavior, risk-spreading, and resource sharing, individual density allocation patterns response, niche differentiation response, species connection response, allelopathy response and biodiversity components response of the plant was profoundly explored in this paper.The studies come to at least four important results:(1) Taking the sensitive response and evading strategy to adapt to environment stress, Potaninia mongolica Maxim is a successful species has lived through the long-term evolution. Nevertheless, it is narrow climate and soil niche and characteristic of vegetation reproduction which has made the plant a rare and endangered species.

本论文通过对绵刺环境胁迫下个体形态可塑性响应、器官解剖结构响应、抗旱性和抗热性生理功能响应、保护酶系统激活响应、内源激素调控响应，有性繁殖对策中结实、扩散、萌发、更新等生活史过程响应，无性繁殖对策中克隆生长格局响应、克隆生长构型响应、克隆生长构型可塑性响应、克隆生长构型与资源异质性响应、内源激素调控克隆生长构型响应、克隆器官结构与功能响应、觅食行为响应、风险分摊响应、资源共享响应，种群中格局配置响应、生态位分异响应，群落中种间关联、异株克生响应、生物多样性组成响应等内容进行研究，揭示绵刺在进化过程中的适应对策和适应能力，为绵刺保护提供理论依据。

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。