叶绿素

Effects of heavy metal Hg on physiological and Siochcmical lindicatios of Pistia stratiotes,were examined in a solution-culture experiment.

中文摘要：利用水培试验方法研究了Cd2+、 Cr6+、Hg2+、pb2+胁迫对穗状狐尾藻叶绿素的含量、细胞膜脂质过氧化的影响。

The results show that with Cd2 + Stress Pistia stratiote large increase of the concentration of leaf tissue of the chlorophyll content decreased, while the MDA, soluble protein content, proline content, lipid membrane permeability, SOD, POD, CAT, nitrate reduction The first enzyme content was increased at different times and reached a peak after the downward trend.

结果显示，随着镉胁迫浓度的增加大薸叶组织内的叶绿素含量呈下降的趋势，而丙二醛、可溶性蛋白含量、脯氨酸含量、脂膜相对透性、超氧化物歧化酶、过氧化物酶、过氧化氢酶、硝酸还原酶的含量呈先升高并在不同的浓度达到高峰后再下降的趋势。

Botany Any of various photosynthetic, eukaryotic, multicellular organisms of the kingdom Plantae characteristically producing embryos, containing chloroplasts, having cellulose cell walls, and lacking the power of locomotion.

植物，树：植物界中具有光合作用的，真核生物的多细胞生物体，其特征能产生胚，含有叶绿素，具有纤维素构成的细胞壁，且缺乏运动的能力

Treating with different concentration of PEG 6000 in 1/2 Hoagland nutrient solution for 3 days, the physiological indexes , such as, Pn, chlorophyll fluorescence parameters, cell membrane permeability, MDA and relative water contents of Plantago asiatica L. and Viola philippcia Cay, were studied. The Pn of P. asiatica and V.

在不同浓度的PEG6000的1/2Hoagland营养液水分胁迫条件下，对处理3d的车前和紫花地丁的净光合速率、叶绿素荧光参数、细胞电解质外渗率、相对含水量和丙二醛含量等指标进行了测定和分析。

The contents of chlorophyll were also decreased. New protein spots were induced and some protein spots were lost in root, plumular axis, chloroplast, when seedlings were treated with 1.0 mmol/L Cd(superscript 2+). A positive relationship was observed between the inhibition of seedling growth and changes in biochemical characteristics.

在1.0mmol/L Cd(上标 2+)溶液处理下，与对照相比，黄瓜幼苗的根、胚轴、叶绿体中的蛋白质组分发生变化，即蛋白缺失、新蛋白合成以及蛋白表达量的上调或下降，同时其生化性状（蛋白质组分、叶绿素含量）的变化与幼苗生长抑制呈正相关。

In this paper, the effects of different illumination on the chlorophyll fluorescence parameters and astaxanthin content of Haematococcus pluvialis were examined.

研究了不同光照强度对雨生红球藻叶绿素荧光特性及虾青素含量的影响。

In this paper, the effects of different illumination on the chlorophyll fluorescence parameters and astaxanthin content of Haematococcus pluvialis were examined.

摘 要：研究了不同光照强度对雨生红球藻叶绿素荧光特性及虾青素含量的影响。

Pluvialis, at the pH range of 7.5-8.0, the Fv/ Fm, Fv/ F0,ΦPSⅡand ETR increased following the rising of pH, with their maximum values at pH 7.5, Fv/ Fm and Fv/ F0 decreased significantly over pH 7.5, while the decreasing trend didn't change obviously in ΦPSⅡ and ETR.

pluvialis CG-11叶绿素荧光动力学参数呈现出相似的趋势，在6.0－7.5范围内，Fv/ Fm、Fv/ F0、ΦPSⅡ和ETR值随pH升高而增大，pH为7.5时达到最大值，pH超过7.5时，Fv/ Fm和Fv/ F0值明显下降，而ΦPSⅡ和ETR的下降趋势不明显。

Aquatic plants were soaked in two purifying-tanks to investigate the effects of illumination intensity and aeration on diurnal variations of Chla,SP,POD of Pontederia cordata and pH,DO,COD,NH+4-N,TP of water from purifying-tanks when treating the malodorous river water at seven different times,another blank purifying-tank was set as a control. Comparative studies and correlation analysis of these different indicators were carried out to improve the plants working efficiency and provide scientific basis for optimal operation of plant purifying-tanks.

测定了曝气和非曝气的2个植物净化槽在1 d中7个不同时间点的出水水质理化指标(pH、DO、COD、NH+4-N、TP)及植物叶片的叶绿素、可溶性蛋白含量及过氧化物酶活性，另设空白槽为对照；试验目的是研究各指标的日变化情况及相互关系，为提高梭鱼草净化黑臭河水的处理效率及其植物净化槽的合理优化运行提供科学依据。

With solution culture,this paper studied the toxic effects of different concentrations of Cu2+(0,2,4,6,and 8 mg·L-1) on the chlorophyll content,soluble protein content,protective enzyme activities,active oxygen generation,and ultrastructural changes in Potamogeton malaianus leaf.

通过溶液培养试验，研究了不同Cu2+浓度(0、2、4、6和8 mg.L-1)胁迫对沉水植物竹叶眼子菜叶片叶绿素含量、可溶性蛋白含量、保护酶活性、活性氧产生以及细胞超微结构的影响。

We have no common name for a mime of Sophron or Xenarchus and a Socratic Conversation; and we should still be without one even if the imitation in the two instances were in trimeters or elegiacs or some other kind of verse--though it is the way with people to tack on 'poet' to the name of a metre, and talk of elegiac-poets and epic-poets, thinking that they call them poets not by reason of the imitative nature of their work, but indiscriminately by reason of the metre they write in.

索夫农 、森那库斯和苏格拉底式的对话采用的模仿没有一个公共的名称；三音步诗、挽歌体或其他类型的诗的模仿也没有——人们把&诗人&这一名词和格律名称结合到一起，称之为挽歌体诗人或者史诗诗人，他们被称为诗人，似乎只是因为遵守格律写作，而非他们作品的模仿本质。

The relationship between communicative competence and grammar teaching should be that of the ends and the means.

交际能力和语法的关系应该是目标与途径的关系。