查询词典 vascular plants

The transgenic plants have been studying for more than ten years, which have some advantages including that the plants are autotrophy not requiring expensive media or strict culture conditions, and the plant viruses cannot infect human, compared with other systems such as microbe fermentation and transgenic animals.

近些年来，人们在转基因植物方面进行了大量的研究。与微生物发酵、动物细胞和转基因动物等生产系统相比，转基因植物不需要昂贵的设备和严格的培养条件，具有光合自养、成本较低，植物病毒不感染人类等优点，已成为一类比较廉价和安全的生物反应器。

Based on morphological characteristics and sequence alignment analysis of rDNA ITS region, 16 strains isolated from diseased plants of Setaria viridis from Beijing, Hebei and Henan, two strains isolated from diseased plants of Chloris virgata and Eleusine indica from Henan, and one strain isolated from diseased plant of Avena fatua from Qinghai, were identified as Bipolaris setariae.

经形态学鉴定和rDNA ITS序列分析，16株分离自北京、河北、河南发病狗尾草的菌株、2株分别分离自河南发病虎尾草、牛筋草的菌株和1株分离自青海发病野燕麦的菌株被鉴定为狗尾草平脐蠕孢Bipolaris setariae。

Some plants rely on wood part of the negative pressure, through its non-metabolic ultrafiltration to separate freshwater from seawater, such as K. candel, Ceriops tagal, etc.; Some plants, such as Avicennia marina, Aegiceras other is through their own system of salt gland salt inhalation secretion of the leaf surface, washed away by rain.

有些植物依靠木质部分负压力，通过其非代谢性超滤作用从海水中分离出淡水，如秋茄、角果木等；有些植物，如白骨壤、桐花等则是通过自身盐腺系统将吸入盐分分泌出叶片表面，经雨水冲刷掉。

The main results were as follows:There was significant correlation between the soil urease and phosphatase activities, which showed no significant difference upon different plots. The urease and phosphatase activities in the soil were higher in spring than autumn, which under mangrove plants were all higher than those in the New alluvial soil without plants and Bared land. Soil urease activity exhibited no significant difference under different mangrove species. The phosphatase activity in the soil of Centenary Aegiceras corniculatum and Spartina alterniflor was the highest, which was the higher in the soil of Kandelia candel and Avicennia marine.

结果表明：土壤脲酶和磷酸酶活性存在极显著的相关性；两种酶在不同区域间均无显著差异，季节变化均表现为春季大于秋季；有红树植被的土壤脲酶和磷酸酶活性皆大于空地和裸地，土壤脲酶不同红树植被下无显著差异，磷酸酶则表现为百年生桐花树和互花米草显著高于其余植被，秋茄和白骨壤次之。

The drought tolerance of wild Axonopus compressus germplasm resources was studied and the drought resistance of each A. compressus plant was found to have a direct relationship with its habitat. The A. compressus plants which had better drought tolerance were usually distributed on sloping ground, waysides etc., while plants which had poor drought tolerance were usually distributed in damp habitats such as river banks and bottoms.

对我国不同来源地毯草野生种质资源抗旱性的研究结果表明，各供试地毯草的抗旱性与生境有着直接的关系，基本表现为分布于山坡地和路边等旱生环境中的地毯草，其抗旱性也相对较好，而那些在综合评判中表现为抗旱性较差的地毯草，大多是从河滩等湿生环境中采集到的材料。

There are large niche overlaps between the shrub and semi-shrub species and among the herbaceous plants of which the overlap between H. scoparium and A. ordosica and between Chloris virgata and Bassia dasyphylla were 0.7192 and 0.8622, respectively, and this indicates that they have greater ecological similarity thus possessing strong competitive capacities in community succession; there are smaller niche overlaps between A. ordosica and various herbaceous plants and thus they can stably co-existed.

灌木、半灌木种之间、草本植物与草本植物之间的生态位重迭值较大，其中花棒与油蒿、虎尾草与雾冰藜之间的生态位重迭值分别为0.7192和0.8622，这表明二者之间有较大的生态相似性，从而在演替过程中具有较强的竞争作用；而半灌木油蒿与各草本植物之间的生态位重迭值很小，它们能够实现稳定共存。

There are large niche overlaps between the shrub and semi-shrub species and among the herbaceous plants of which the overlap between H. scoparium and A. ordosica and between Chloris virgata and Bassia dasyphylla were 0.7192 and 0.8622, respectively, and this indicates that they have greater ecological similarity thus possessing strong competitive capacities in community succession; there are smaller niche overlaps between A. ordosica and various herbaceous plants and thus they can stably co-existed.

灌木、半灌木种之间、草本植物与草本植物之间的生态位重叠值较大，其中花棒与油蒿、虎尾草与雾冰藜之间的生态位重叠值分别为0.7192和0.8622，这表明二者之间有较大的生态相似性，从而在演替过程中具有较强的竞争作用；而半灌木油蒿与各草本植物之间的生态位重叠值很小，它们能够实现稳定共存。

The injury threshold values of most plants are observed at pH 2.0~3.5 designed in this experiment. However, those of Brassia campestris, Viola tricolors and Zephyranthes candida are not fixed at pH 2.0. It indicates that three herbaceous ornamental plants own a strong resistance to acid rain.

在设定的酸雨胁迫强度(pH 2.0~3.5)下，多数植物的伤害阈值可被确定，惟有羽衣甘蓝、三色堇和葱兰在pH2.0酸雨胁迫下仍无法确定其伤害阈值，表明此3种草本观赏植物对酸雨有极强抗性。

We got the Tara replacing plants in Chinese Caesalpinia plants for the first time.

首次在我国云实属植物中找到了可替代进口塔拉的植物。

We examined some new distributing and recorded plants in our province. These are viola muchlclorfii, Cotonoaster integrrima, Thealictrum foetidium, and Caltha natans four plantS.

这些是：大黄花堇菜，全缘橡子木，腺毛白蓬草，白花驴蹄草等四种植物。

Nowadays, most of research are to build a transmutative Petri Nets through adding controlling place sets, controlling arc sets and controlling policy to the basic Petri Nets, while the Controlled Petri Nets could be used to argue many controlling theory problems conveniently and to induce many logically and physically supervisory and solve the Event Feedback Controlling Problems and State Feedback Controlling Problem in DEDS supervisory theory.

目前大多数的研究表现为在变形后的受控Petri网基础上，利用各种方法求得各种逻辑型、结构型控制器，解决DEDS监控理论中的事件反馈控制问题与状态反馈控制问题。

On one hand, there are discussions with the works council and union about extension of short time working up to the end of September.

一方面，有讨论，工程理事会和联盟关于延长工作时间短至9月底。