叶绿素

The results of absorption spectra of chloroplasts showed that NO alleviated the effects of Cd on absorption spectra of chloroplast by raising the relative absorbance at 436 nm,480 nm and 470 nm,which caused lower contents of carotinoid and chlorophyll.

结果发现，Cd对叶绿素a、叶绿素b和类胡萝卜素含量都有不同程度的降低，NO处理缓解了Cd的影响，使叶绿体室温吸收光谱的吸收率提高；Cd导致686 nm处峰偏移4 nm，峰值降低33%，734 nm处峰值降低23%，外源NO缓解了Cd对光合系统的影响，使得叶绿体低温荧光光谱在686和734 nm的峰值分别仅下降17%和10%；以DCPIP为人工电子受体， Cd处理的叶绿体中DCPIP还原速率较慢，光合电子传递(H2O→DCPIP)速率降低1.5倍，外源NO处理显著缓解了Cd对电子传递链的抑制，使其光合电子传递速率恢复到对照的水平。

The Ф_,Fv/Fm and qP were increased but qN was decreased with increasing of chlorophyll a,the rate of heat dissipation was increased with the increasing of chlorophyll b,and the carotinoid increasing enhanced the rate of heat dissipation of dryland and carbon assimilation of irrigated cultivar.

提高叶绿素a含量能显著提高叶片ФPSⅡ、Fv/Fm、qP和降低qN；叶绿素b含量的升高能显著增强热耗散，增加类胡萝卜素含量则促进水地品种叶片光能的光合碳同化作用和旱地品种的热耗散。

With the increasing of irrigation , chlorophyl 1 content of three turfgrasswould go up , but to some degree,over-irrigation would also result in the decline of chlorophyll content.

叶绿素含量总体都是随灌溉量的增加而增大的，过高的灌溉量甚至会引起叶绿素含量的下降。

4The relationship between the pure photosynthesis rate of leaf and contents of chlorophyl is inclined to power, and the chlorophyl has much effect on the photosynthesis rate.

叶片的净光合速率和叶绿素含量趋向于幂关系，叶绿素a的含量的多少更能影响光合速率的大小。

There was significant positive correlation between photosynthetic rate and leaf chlorophyl content, increasing the phosphorus application is beneficial to increasing leaf chlorophyl content and net photosynthetic rate.

叶绿素含量与光合速率呈显著正相关，增施磷肥有利于提高小麦叶片的叶绿素含量，从而提高小麦叶片的净光合速率。

chlorophyl ; absorption spectra ; illuminating time ; wave length of light ; temperature

因此，很长一段时间里对叶绿素的研究引起了众多学者的兴趣，而对叶绿素特定吸收光谱的

The researched results show that only when excess frequency equal to the natural frequency of chlorophyl the electronics transition occur. This would induce that the chlorophyll absorbs 432um blue light and 662um red light.

研究结果表明：只有外场频率与叶绿素的固有频率相等时电子才发生跃迁，从而导致叶绿素吸收中心波长432nm的蓝光和662nm红光。

The position of chlorophyll a in photosystems has a strong influence on the function of chlorophyll a.

叶绿素a在光合系统中的位置，对叶绿素a的功能有极大影响

Many plants are green mainly because of a complex chemical known as chlorophyll which is involved in photosynthesis.

大多数植物是绿色的，主要原因是它们有一种很复杂的被叫做叶绿素的化学物质，这些叶绿素与植物的光合作用有关。

However, the ratio of chlorophyll a to b reduced.

但叶绿素a与叶绿素b的比值则下降。

But we don't care about Battlegrounds.

但我们并不在乎沙场中的显露。

Ah! don't mention it, the butcher's shop is a horror.

啊！不用提了。提到肉，真是糟透了。