叶绿素

Zn~(2+) had a relative lower toxic effect on the conchocelis among the five heavy metal ions in this experiment, when the concentration was up to 60μmol/L and time was after 48 hours, its slightly negative effect on the conchocelis came into effect, chlorophyll a content, soluble protein content, mannite content, POD activity started to decrease and MDA content began to increase.

Zn~(2+)在实验所采用的五种重金属离子中毒性较弱，对藻体造成的抑制影响较小，当浓度升至3.9mg/L、时间加长到48h时出现极微的抑制作用，叶绿素a含量、可溶性蛋白含量、甘露醇含量、POD活性下降，丙二醛含量升高。

The biochemical and physiological effects of Pb~(2+) on conchocelis of Porphyra yezoensis was lower relatively, at the beginning, the algae still grew under the condition of higher concentration-40 mg/L, mannite content and POD activity appeared a tendency to first increased and then decreased, but chlorophyll a content declined slightly, on the contrary, MDA content went up quickly.

Pb~(2+)对条斑紫菜丝状体的毒性相对较弱，在浓度40 mg/L时，处理早期(12h时)丝状体仍有生长，此浓度下藻体的甘露醇含量和POD活性均随处理时间的延长呈现先升后降的趋势，而叶绿素a含量逐渐下降，与此相反，丙二醛含量迅速上升。

This paper takes conchocelis of Porphyra yezoensis as experiment material, analyzes the toxicity of heavy metal ions on 6 parameters of chlorophyll a content, soluble protein content, mannite content, peroxidase activity, malonaldehyde content and the growth of conchocelis. In experimental conditions, samples were exposed to mercuryHg~(2+, copperCu~(2+, cadmium Cd~(2+, plumbumPb~(2+ and zincZn~(2+ at different concentrations and were taken after exposure for different hours.

本文以条斑紫菜丝状体为实验材料，测定条斑紫菜丝状体中叶绿素a含量、可溶性蛋白含量、甘露醇含量、过氧化物酶活性、丙二醛含量及藻体生长情况6项生理生化指标，研究分析了不同处理浓度和不同培养时间下重金属离子Hg~(2+)、Cu~(2+)、Cd~(2+)、Pb~(2+)、Zn~(2+)对条斑紫菜丝状体的毒性效应。

The extraction and isolation conditions of chlorophyll were studied using the leaves of Indocalamus herklotsii McClure with supercritical CO2 extraction.

采用超临界CO2萃取技术，研究了从箬竹叶中提取叶绿素的工艺。

But the total chloroplast plan area per mesophyll cell was conserved in sense, antisense and wild type tobaccos.

同时还证明NtFtsZ2-1基因表达的变化对叶绿素含量和叶绿体的光合作用能力没有直接的影响。

Preparation of pure chlorophylls and pheophytins was performed by microcrystal cellulose column chromatography and silica gel thin layer chromatography respectively.

3分别采用微晶纤维素柱色谱和硅胶薄层色谱制备出较纯的系列叶绿素衍生物。

Studies on photosynthetic characteristics of Chinese cabbage satellite monosome, diploid or trisome;2. Characteristics of Photosynthesis in Seed Plants of Satellite Chromosome Monosome, Diploid and Trisome of Chinese Cabbage

以大白菜随体单体、三体和二倍体为试材，在自然条件下，对生殖生长期的功能叶的叶绿素含量、希尔反应活性、净光合速率、光合速率日变化、Rubisco活性等生理生化指标进行了测定，以研究同源染色体的附加和减少对光合特性的影响，为开展染色体工程育种提供参考。

The results showed that there were remarkable seasonal variations of chlorophyll a concentrations and grain size at the surface of the mudflat, i.

结果表明，研究区域表层沉积物中叶绿素a的浓度4，5月份较高，分别为(5.997±0.803)gg^(-1)和(2.356±0.295)gg^(-1)，12月份最低，为(0.571±0.091)gg^(-1)；表层沉积物中细颗粒物质(0m)含量从4月到12月也有减少的趋势，春季4月份最高，为(91.0±5.44)%，冬季12月份最低，为(59.8±11.95)%。

The present article aims to determining the activity of Hill reaction and the Myrica nana s chloroplast.

对贵州矮杨梅叶片叶绿体希尔反应活力和叶绿素含量的测定，并对其光合作用特征进行了初步的探讨。

Fatsia japonica、 Nandina domestica、 Laurus nobilisl、 Hhypericum Chinense were cultivated under four different light regimes(fully open site,58%,24% and 6% daylight).Their leaf area, leaf mass per unit area, the gas exchange parameters , chlorophyll content, the RPP were measured.

测定了4种光强(100％、58％、24％、6％自然光强)下，地被植物八角金盘、南天竹、月桂、金丝桃的叶面积、叶片气体交换参数、比叶重、叶绿素含量和高温下细胞质膜透性。

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。