查询词典 Lactuca

Aqueous extract of cotton has allelopathic effect on Raphanus sativus, Brassica campestris, Lactuca indica, Brassica campestris, Echinochloa crusgall, Setaria viridis and Abutilon theophrasti and its inhibition effect gradually strengthens with increasing concentration. Aqueous extracts from stems, leaves and roots of cotton inhibit or accelerate seed germination and seedling growth, and activity of enzyme of seedling root of cotton. While aqueous extracts from stems and leaves of cotton are 0.02 gmL^(-1), root length, shoot length, lateral root number and dry weight of cotton respectively increase by 10.3%, 3.1%, 22.9% and 2.4% over the control. The above mentioned indexes are lower than the control by 34.4%, 39.2%, 40.6% and 19.0% respectively as the aqueous extracts are 0.1 gmL^(-1). At the same time, root activity and SOD activity decrease by 38.2% and 36.7%, while POD activity and MDA content increase by 52.3% and 36.5%. Growth indexes of plant receptors increase at low concentrations but decrease at high concentrations of aqueous extracts. The allelopathic effect of aqueous extract of stems and leaves is stronger than that of root.

结果表明：棉花植株水浸提液对萝卜、白菜、莴苣、油菜、稗草、狗尾草、苘麻均具有化感效应，随着作用浓度增加，抑制效应逐渐加强；棉花茎叶和根系水浸提液对棉花种子萌发、幼苗生长、幼苗根系活力、根系酶活性有抑制或促进作用，当茎叶浸提液浓度为0.02 gmL^(-1)时，棉花根长、苗高、侧根数、干重分别比对照增加10.3%、3.1%、22.9%和2.4%，当浓度为0.1 gmL^(-1)时，上述指标与对照相比分别降低34.4%、39.2%、40.6%和19.0%，而根系活力、SOD活性比对照降低38.2%、36.7%，POD活性、MDA含量较对照增加52.3%和36.5%，不同浓度棉花植株水浸提液对棉花生长呈现"低促高抑"的规律，且茎叶浸提液作用效应大于根系浸提液。

Planted in greenhouses has been conducted with two types of light source of 400 watt, one of which is a high pressure sodium lamp, and the other is a sunlight dysprosium lamp.

用400 W的高压钠灯和日光色镝灯两种光源对温室栽培生菜（Lactuca sativa L。）的生长进行了补光效果测试。

To investigate the toxicity of degraders metabolites, the Microtox test and seed bioassay were measured. The results revealed that not only the toxicity of m-cresol was decreased but also the inhibition for the radical and epicotyl growth of Lactuca sativa were lowered.

降解完毕之代谢物经Microtox生物毒性测试及种子生物分析测试，结果发现接种高效能菌株可明显降低生物毒性，甚至对莴苣种子的胚根及胚茎生长不具抑制效果。

Major morphological and economical characters and some physiological and biochemical changes of head lettuce(Lactuca sativa var.capitata L.) under heat stress were studied.

以6个结球莴苣品种为试验材料，从生长发育、经济性状和生理生化等方面研究耐热性的鉴定方法。

The results demonstrated that Ulva lactuca was is an alga rich inprotein,cellulose,and ash.

结果表明，石莼是一种富含蛋白质、纤维素和灰分的海藻。

It was concluded that the photosynthesis and carbon budget of Ulva lactuca under aquatic state differed from that under aerial state, and such difference was associated with the conditions of ambient temperature and water statues of thalli.

认为石蒓在低潮气生状态下与在高潮水生状态下光合特性及净碳固定存在差异，但这种差异与环境温度及叶状体的水分状态有关。

The photosynthetic responses to light and temperature were examined in Ulva lactuca collected along the Shantou coast of China, to establish the photosynthetic characteristics in relation with tidal cycles for this common intertidal green macroalga.

对采自汕头沿岸的石莼在水生和气生不同状态下光合作用对光照和温度的响应特性进行了测定，以探讨这种常见的潮间带绿藻在潮汐循环背景下的光合特性。

The contents of four kinds of flavor amino acids accountedfor 41.5% of the total amino acid contents,so Ulva lactuca is a nutritional and deliciousalga.

石莼的蛋白质营养价根据第一限制氨基酸价(44.3)评价较低，不过第二限制氨基酸价(88.0)为较高，其他氨基酸价较均匀，缬氨酸价最高。

Lactuca indica is a good pasture resource, mature period is a key for L. indica being used effectively. In this paper, the root tip of L.

苦荬莱Lactuca indica是一种优良的牧草种质资源，热期是苦荬菜利用的重要影响因素之一。

Adaptation to seawater in Lactuca indica was mainly caused by strong K+ selective absorption and transport. Furthermore, accumulating soluble sugar and protein were important osmotica in Lactuca indica seedlings and it could be characterized as an indicator of salt tolerance.

海水胁迫下，苦荬菜幼苗维持一定的K+离子选择性吸收是其一定程度上盐适应的重要原因；同时，可溶性糖、可溶性蛋白的积累作用是苦荬菜幼苗盐胁迫下的重要渗透调节物质，可以作为其抗盐性的生理参数。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。