植物的

Thus this antagonistic strain LH33 can control fungous disease of tomato, wheat, cotton and other plants, at the same time promotes the growth of plants.

菌株LH33可防治水稻、番茄、小麦、棉花等多种植物真菌病，并对植物的生长有促进作用。

With the ability to identify the vascular plants by the herbarium of PPI and in the fields.

植物分类学实习乃为使学生在 PPI 标本馆与野外具有鉴定维管束植物的能力。

I.sanguinea and I. typhifolia have thin seed capsules and compact endosperms. The seed testa of I, lactea is thick and keratose.

这三个种均为湿生植物：溪荪、北陵种皮较薄，但胚乳较为致密，为中生种类：马蔺种皮厚，胚乳硬实，紧紧包被种胚，具有旱生植物的特征。

Any of various plants of the genus Lychnis, which includes the campions.

极像麦瓶草属植物的一个属；蝇子草属植物，捕虫草。

The chemical constituents of Huperzia serrata Trev. are mainly flavonoids, triterpenoids and alkaloids. In order to get further comprehension of lycopodium alkaloids, we studied the low-polar section of the alkaloids extraction of Huperzia serrata and 19 alkaloids were isolated by ways of silica gel, RP-18 and Sephadex LH-20 etc. All of their structures, including five new compounds and two known ones that were firstly found from this genus, were elucidated with the help of Mass, IR, NMR spectra and so on. The five new alkaloids (HS-07, HS-08, HS-09, HS-10 and HS-11) are belonged to lycopodine class. The other two ones that were new to this genus (HS-18 and HS-19) are belonged to miscellaneous group.

蛇足石杉的主要化学成分为黄酮，三萜和生物碱，为进一步了解该植物的生物碱成分，我们研究了蛇足石杉氯仿总碱低极性部位的生物碱成分，运用正相硅胶、反相RP-18、凝胶LH-20等方法分得了19个生物碱，并通过质谱、红外、核磁共振等波谱鉴定了它们的结构，其中5个为新化合物，2个为首次从该属植物中分离得到的化合物，所分得的新化合物：HS-07、HS-08、HS-09、HS-10和HS-11均为lycopodine类石松生物碱，首次从该属植物中分得的化合物为miscellaneous类：HS-18和HS-19。

The main results are as follows: 1. From the specimens we observed 5 phyla 53 genus 106 species of phytoplankton. The mean density and biomass of phytoplankton are 80.954xl04 ind/L and 0.567 mg/L.

结果如下： 1。样品中共检出浮游植物5门53属106种，浮游植物的平均密度和生物量分别为80.954×10~4 ind／L和0.567 mg／L。

Rice has became the model plant for monocot plants for its small genome and high level of colinerity with other cereal crops.

水稻由于具有基因组小、与其他谷类作物共线性水平高等特点而被作为单子叶植物的模式植物。

This paper discussed recent progresses in Agrobacterium transformation mechanism, plant response to the infection of Agrobacterium, the expression of foreign genes in transgenic plants and monocotyledonous species transformation by Agrobacterium.

本文从农杆菌介导的基因转化机理，植物对农杆菌侵染的反应，转基因植物的遗传表达，以及农杆菌对单子叶植物的转化等方面论述了该领域的最新研究进展，并提出了进一步研究的方向。

In order to simulate the morphology structure of plant,a plant morphological structure model is proposed.

为模拟真实植物的具体外观形态，提出了一种植物形态结构表达模型。

And wild Nelumbo nucifera ranked last, and combination of several aquatic macrophytes could keep good purification effect for a long period.

从单一水生植物的净化作用上看，水葫芦的净化效果最好，次之为睡莲和野生荷花，人工种植的荷花相对较差；多种水生植物的组合更有利于植物在净化作用上的优势互补，从而能始终保持较好的净化效果。

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。