分类学

The aim of the study is to reveal the genetic diversity in Cerasus and help to exploit and make use of the germplasm of Cerasus.

根据系统聚类分析将30个樱桃品种分为两大类：欧洲甜樱桃和中国樱桃，与传统分类学的结果相符。

According to the relative literature, this paper surveys the taxonomical adscription, the main botanic characters and ornamental characters of the Malus and Chaenomeles species which have been used or have potential applied value in landscape architecture, summaries the expressional forms of their culture, states their disposition and applied forms in the classical and modern landscape, points out the problems that lie in the development and application of them in landscape, raises the exploitation measures and forecasts the application prospect.

依据相关文献，概述了中国园林绿化中已经应用或有潜在应用价值的海棠树种资源的分类学归属、主要植物学特征和观赏特征，总结了海棠文化的内涵和表现形式，阐述了海棠树种在古典和现代园林中的配置方式和应用形式，指出了海棠树种资源在园林应用开发方面存在的问题，并提出开发对策，展望了应用前景。

The zymogramatic variations of esterase isoenzyme and superoxide dismutase isoenzyme of 20 sample materials, including 5 species, 2 varieties, 1 multiploid of Isatis L. and 1 outgroup species, Coronopus didymus J. E. Smith, were analyzed with technique of polyacrylamide gel electrophoresis.

采用聚丙烯酰胺凝胶电泳，比较了菘蓝属5种2变种1多倍体品种及1外类群种共计20个样本的酯酶同工酶和超氧化物歧化酶同工酶的酶谱差异，并运用数量分类学的原理和方法对酶谱数据进行了聚类分析。

The two species are grouped together within the family Crocodylidae.

不过在分类学上来说，这可非同小可。

Pollen morphology and exine ultrastructure Pollen exine ultrastructure of five species in Stachyurus and one species of its sister group, Crossosoma californicum, were investigated under transmission electron microcopy for the first time. The pollen morphology of Crossosoma californicum was studied under Scanning Electron Microcopy.

花粉形态学和外壁超微结构在透射电镜下研究了旌节花属5个代表种和1个外类群的花粉外壁超微结构，并在扫描电镜下研究了外类群Crossosomataceae 1个代表种的花粉形态学特征，结合前人的研究，探讨了上述性状的分类学意义。

The problem of taxonomy of every species were carried out research combining with the histological structure, morphology of pollens and the characteristic of embryology; while the relation betweeen Cycadaceae and Stangeriaceae and Zamiaceae were analysed.

结合解剖结构、花粉形态、胚胎学特征等方面的许多性状，对各个种的分类学问题进行了细致的研究；同时对与托叶铁科和泽米铁科的关系等方面也进行了一些分析。

Dentata. The cytotaxonomical value of the features of karyotypic structure and the positinal differentiation of NORs between this two spepies is preliminarily discussed.

作者对这两种摄龟核型的结构特点和NOR位置差异的细胞分类学意义进行了讨论。G[2]G

Species diversity of Lachnum from Huangshan Moutains Anhui China weresurveyed, Nine taxa were reported. Tissue isolation was performed on 97 discomycetes specimens fromHuangshan Mountains, 33 filament products were obtained.

我国安徽黄山等地物种丰富，但是对粒毛盘菌属物种多样性的报道却相对较少，本研究对黄山等地粒毛盘菌属的物种多样性进行了分类学研究，报道了黄山粒毛盘菌属9个分类单元。

Dissimilatory Fe-reducing bacteria are spread throughout the domain of bacteria and archaea.

异化Fe还原菌不是分类学上的概念，它具有系统发育及环境来源多样性的特点。

Studies of numerical classification on the plants of Equisetaceae in China.

中国木贼科植物的数量分类学研究。

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。