叶绿素的

In order to force the leaf color to change, we need to understand how leaves change color in the fall. In short, the temp drops and blockage in the veins is formed inside the leaves and it stops water from reaching every corner of the leaves. Then the chlorophyl disappears and they are replaced by those red and yellow pigments.

为了迫使叶子变色，我们就必需要了解它在秋天是如何变色的，简言之，温度下降阻碍叶片中的叶脉形成，因而停止了水份到达它的每一个角落，叶绿素跟著消失，而被红色和黄色的色素所取而代之。

This experiment showed that, in the experiment with varieties of stock, cion affinity was not strong, graft survival rate was not high, but increased the content of plant chlorophyll, photosynthetic capacity had been upgraded after grafting.

试验表明：所用的砧木品种与接穗的亲和力均不强，嫁接成活率不高，但嫁接后提高了植株的叶绿素含量，光合作用能力也有所提高，从而提高了甜椒的产量和品质。

The results showed that there existed significant difference in chlorophyll a, MDA and proline content among different treatments. No significant physiological variation was found in electrolyte exosmosis percentage, POD activity and proline content between the salt treatment and the control during the treatment while the parameters in drought and salt/drought treatment fluctuated remarkably.

结果表明：欧李的叶绿素a、丙二醛和脯氨酸含量在不同的逆境处理间差异显著；碳酸盐处理的电解质外渗率、POD活性、脯氨酸含量等生理指标变化平缓，与对照差异不明显；干旱处理和盐与干旱协同处理的各项指标波动很大。

And with decrease in light intensity,the shape of palisade mesophyllchanged from column into invert pyramid.The higher proportion of granum thylakoid,more granum in one ganum thylakoid and lower ratio of chlorophyll a to chlorophyll bwere also the responses of leaves to shading.

在庇荫环境中，栅栏组织薄壁细胞由全光的柱状变成倒锥形、叶绿素a/b率显著降低、叶绿体中基粒类囊体所占的比例提高、每个基粒类囊体垛的片层数量增加等，也是幼树提高叶片对弱光利用能力的主要标志。

Eichhornia crassipes and Hosta ventricosa is used as experimental material to study Cd stress on the two plants growth, chlorophyll content, MDA and root peroxidase activity and other physiological indicators to investigate the effect of Cd on the toxic effect of higher plants,with a view to Cd pollution Phytoremediation providing a theoretical basis.

以凤眼莲和紫萼玉簪为实验材料，研究镉胁迫对凤眼莲和紫萼玉簪的生长、叶绿素含量、丙二醛含量及根系过氧化物酶活性等生理指标的影响，探讨镉对高等植物的毒害效应，以期为重金属镉污染的植物修复技术提供理论依据。

Some morphological and physiological parameters of Li-1 and TM-1 weremeasured in this experiment. It showed that the contents of chlorophyll in Li-1 washigher than that in TM-1, but leaves areas and photosynthetic rate of Li-1 were lowerthan that of TM-1. The results indicated that lower photosynthetic efficiency and lackof assimilates would decrease the biomass of Li-1, and exhibited other abnormalphenotype such as curled leaves and fiber hypogenesis.

通过对突变体与标准系形态指标和生理指标的测定比较发现，虽然突变体的叶绿素含量高于标准系，但叶面积和光合速率低于标准系，说明生成同化产物的效率较低，这是造成突变体植株生物量较小的直接原因。

Researchers have tried to mimic the process used by plants with experimental systems that use some of the components of photosynthesis, such as chlorophyll, which makes plants green and helps trap light , and catalysts which facilitate the process of converting carbon dioxide, water and sunlight.

研究人员一直试图用实验体系模拟植物的光合作用。他们想利用一些光合作用中的原料，例如让植物呈现绿色并有助于俘获光子的叶绿素、促进二氧化碳转化过程的催化剂、水和阳光。

Fourthly, taking three groups of water quality data of Jinhe River as original data, prediction to water quality of the river was made. Compared with real monitored value, the error of predicted value of all of simulating terms, including dissolved oxygen, bio-chemical oxygen demand, chlorophyll a, organic nitrogen, ammonia nitrogen, nitrite nitrogen, nitrate nitrogen, organic phosphorus, dissolved phosphorus and temperature, were basically within error limit of 20%, which validated the validity of the model.

第四，以津河三组水质数据为原始数据，通过建立的模型对津河水质进行预测，水质变量溶解氧、BOD、叶绿素、有机氮、氨氮、亚硝酸盐氮、硝酸盐氮、有机磷、溶解性磷和温度的预测值与实际监测值均在所设定的误差范围20%之内，验证了模型的有效性。

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。

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。

Singer Leona Lewis and former Led Zeppelin guitarist Jimmy Page emerged as the bus transformed into a grass-covered carnival float, and the pair combined for a rendition of "Whole Lotta Love".

歌手leona刘易斯和前率领的飞艇的吉他手吉米页出现巴士转化为基层所涵盖的嘉年华花车，和一双合并为一移交&整个lotta爱&。

This is Kate, and that's Erin.

这是凯特，那个是爱朗。