共生

A fungus, usually of the class Ascomycetes, that grows symbiotically with algae, resulting in a composite organism that characteristically forms a crustlike or branching growth on rocks or tree trunks.

地衣一种真菌类植物，通常属于子囊菌纲，与藻共生形成一种复合有机体，生长于岩石或树干上，多为硬壳状或枝叉状

The aim of the research was to establish asymbiotic germination and low-temperature in vitro conservation technique system of Cymbidium dayanum by using plant tissue culture technique to realize its rapid propagation and long-term conservation in vitro.

［目的］利用组培技术建立冬凤兰非共生萌发和低温离体保存技术，以达到快速繁殖和长期离体保存该植物的目的。

The ai mof the research was to establish asymbiotic germination and low-temperature in vitro conservation technique systemof Cymbidium dayanum by using plant tissue culture technique to realize its rapid propagation and long-termconservation in vitro.

利用组培技术建立冬凤兰非共生萌发和低温离体保存技术，以达到快速繁殖和长期离体保存该植物的目的。

With mature seeds of C. dayanum as explants, different media were selected to establish asymbiotic germination technique system With protocorms as materials, conservation, proliferation resumption and plant regeneration conditions were selected to establish low-temperature in vitro conservation technique system preliminarily. Mature seeds of C.

方法］以冬凤兰种子为外植体，选择不同培养基建立冬凤兰非共生萌发技术；同时利用原球茎为材料，选择低温离体保存，恢复增殖及植株再生条件，初步建立冬凤兰低温离体保存技术体系。

The result indicated that good symbiosis was formed between AM fungi and Avena sativa, and different sample sites significantly affected the colonization of different structure and spore density of AM fungi.

对青海省民和、大通、湟中、海北4样地燕麦根际AM真菌空间分布和土壤成分测定分析表明，燕麦可与AM真菌形成共生关系，AM真菌不同指标和孢子密度与样地生态条件密切相关。

The releasing pattern of N from Azolla in Rice-Azolla-Fish system was studied.

应用~(15)N示踪技术，研究了稻萍鱼共生体系中红萍氮素的循环利用效率。

Certain N-fixing cyanobacteria also form a symbiotic relationship with the water fern Azolla in rice paddy systems.

一些固氮的兰细菌也能在水稻田里与水生蕨类红萍形成共生关系。

The half-life of 35S-methamidophos on the Azolla, water,fish and straw are 1.5, 2.8, 6.2 and 2.2 days respectively.

35S-甲胺磷在模拟共生体系中按指数回归消失，它在萍、水、鱼和稻草上的半衰期分别为1.25、2.8、6.2和2.2天。

The advantage and limitation of using DGGE in uncovering genetic diversity and the potential role of endophtic bacteria in phylogeny and synchronic evolution among the Azolla, cyanobacteria and bacteria were discussed.

文中也讨论了应用DGGE研究遗传多样性的优点、不足以及内生细菌在满江红－蓝藻共生体的系统发育和协同进化中的可能作用。

Azolla,a symbiosis of blue green alga and aquatic fern,widely distributesin rice paddy fields,lakes and swamps.

萍是固氮蓝藻与蕨类植物的共生体，广泛分布于稻田、湖泊及沼泽等水生生态系统。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。