npq

However , no significant increase of NPQ was detected during drought stress under low light conditions .

此外，低光干旱胁迫没有导致NPQ显著增加。

QP 、 NPQ were correlated negatively with important economic traits .

qP、NPQ与主要经济性状间的相关系数为负值。

Before treatment , the treatment group and control group in general , NPQ and VAS score was no significant difference ( P 0.05 ) . 2 .

结果1、治疗前，治疗组与对照组的一般情况、NPQ及VAS评分无显著差异（P0.05）。

From the measured data are available in different concentrations of acid stress , qP values of all clones and NPQ values were increased significantly .

由测定数据可得，在不同浓度酚酸胁迫下，各无性系qP值和NPQ值均大幅上升。

In contrast , non-photochemical quenching ( NPQ ) increased significantly during drought stress and was the important photoprotection mechanism during drought stress under high light conditions .

比较而言，在整个高光干旱胁迫期间非光化学猝灭（NPQ）显著的增加，表明热耗散是高光干旱胁迫期间重要的光保护机制。

Fig.4 Response of NPQ to PFD in control and Fe-deficient plants . The left side is maize ; the right side is soybean .

图4对照及缺铁植株非光化学猝灭光化学效率（PQ）光强的响应。左侧为玉米，右侧为大豆。

At low temperature and low irradiance , NPQ of grafted plants ascended evidently . It indicated that NPQ could effectively dissipate a portion of energy .

低温弱光胁迫下，黄瓜嫁接苗NPQ明显升高，说明NPQ有效地耗散了部分能量。

Non-photochemical quenching ( NPQ ) which depends on the xanthophyll cycle protects the photosynthesis apparatus from inactivation and damage caused by excess excitation energy .

依赖于叶黄素循环的非光化学猝灭（NPQ）能够保护植物光合机构免受过剩激发能的破坏。

At the differ treatment periods and at 40 ℃ / 30 ℃, The Fo and NPQ of grafted and own-rooted seedlings were in accordance with CK .

在40℃/30℃时，黄瓜幼苗叶片Fo、NPQ变化趋势均和对照一致，嫁接苗的增幅小于自根苗。

Although both NPQ of WT and antisense transgenic plants increased markedly under chilling stress in the low irradiance and high light stress , there was no difference between WT and antisense transgenic plants .

在强光和低温胁迫过程中野生型和转反义基因植株的NPQ都上升，但两者的NPQ基本没有差别。

The results showed that the chlorophyll fluorescence parameters Fv ' / Fm ' , qP and Φ PS ⅱ decreased with the increase of actinic light intensity , but qN and NPQ increased .

结果显示，随着作用光强的增加，叶片Fv'/Fm'、qP和ΦPSⅡ呈下降趋势，qN和NPQ表现为上升。

In addition , choline chloride treat-ment increased the non-photochemical quenching ( NPQ ) ( Fig.3D ) and the proline content ( Fig.5 ) in chilled leaves under weak light .

提高了非光化学猝灭系数（NPQ）和脯氨酸的含量。

Non-photochemical quenching ( NPQ ) in Nenjiang spruce increased under slight drought , it indicated that heat disseminates which possess photoprotective effect increased , and this function of Korean spruce was not obvious .

嫩江云杉在轻度的干旱下非光化学猝灭（NPQ）上升表明，嫩江云杉起光保护作用的热耗散提高，红皮云杉这方面的作用不明显。

The differences of NPQ between them were significant at 9:00 and 12:00 , and the value of NPQ of treated samples increased to 47 % in morning and decreased to 15 % in afternoon ( P < 0.05 ) .

NPQ在9：00和12：00与对照间的差异显著（P<005），午前平均增幅高达47%，午后平均增幅减至15%。

They increased in electron transport rate ( ETR ) and non-photochemical quenching ( NPQ ) with strong daytime light , which indicated that they counteracted photo-inhibition and protected photosynthetic structures by increasing respiration and thermal dissipation .

电子传递速率（ETR）和非光化学猝灭系数（NPQ）随日间光强的增大而升高，表明三叶漆可能通过增强光呼吸和热耗散抵御光抑制、保护光合机构。

QP of Prunus armeniaca increased as degree of soil water stress aggravated while that of Hippophae rhamnoides showed the opposite trend ; NPQ of Prunus armeniaca and Pinus tabulaeformis reached their highest level under mild water stress .

山杏的qP随着土壤水分胁迫程度的加剧，呈逐渐增大的趋势，而沙棘则表现出与山杏相反的趋势；山杏和油松的NPQ在轻度水分胁迫下最大，其后有所减小。

We also detected a significant increase of NPQ in the stressed leaves of both cultivars , which indicated that the mechanism of thermal dissipation had been started to dissipate excess light energy , and protect the plants from photo-inhibition and photo-oxidation .

缺钾叶片NPQ显著上升，说明钾胁迫下的水稻叶片通过启动热耗散机制耗散过剩的激发能，以减轻因PSⅡ吸收过多光能而引起的光抑制和光氧化从而保护光合机构免受伤害。

Being dehydrated for 12 hours , the detached leaves still had certain ability of light energy conversion . Whereas the values of qP , Φ PS ⅱ, qN and NPQ were significantly decreased after the leaves were dehydrated for 24 and 36 hours .

离体叶片脱水胁迫12h后，仍有一定的光能转化能力，但脱水24h和36h后，qP、ΦPSⅡ、qN、NPQ都明显下降。

However , the contents of chlorophyll and soluble protein , apparent quantum yields , photosynthetic rate of light-saturation , F_v / F_m and Ф _ ( PS ⅱ) were enhanced , and NPQ was reduced when the plants were treated by high-concentration nitrogen .

较高浓度氮素营养的小麦叶片中叶绿素及可溶性蛋白含量、表观量子效率及光饱和速率明显增加，NPQ降低，Fv/Fm及ФPSⅡ有升高的趋势。

Exogenous Spd decreased 1-qP / qN , NPQ and DEPS in leaves of cucumber seedlings during hypoxia stress , showing that exogenous Spd did not alleviate photo-inhibition of cucumber seedlings by xanthophyll cycle through dissipation excess energy under hypoxia stress .

外源Spd降低了低氧胁迫下黄瓜植株的1-qP/qN，同时也降低了NPQ和DEPS，说明Spd并不是通过增强叶黄素循环来耗散过剩光能从而缓解光抑制。

In the early and mature stages of leaf growth , the photosynthetic water potential compensation points ( the leaf water potential at zero net photosynthetic rate ) was-3.65 MPa and-5.76 MPa respectively , and the NPQ initial water potentials were-2.20 MPa and-6.63 MPa , respectively .

m-2.-s1；叶生长初期和叶成熟期净光合速率水势补偿点（净光合速率为0时的水势）分别为-3.65MPa和-5.76MPa，NPQ初始水分胁迫水势分别为-2.20MPa和-6.63MPa。

It also decreased the photochemical efficiency (Δ F / Fm ′) of PS II under actinic light , electron transport rate ( ETR ) and ATP content per unit leaf area but increased the intercellular CO 2 concentration and non photochemical quenching of chlorophyll fluorescence ( NPQ ) .

同时，光系统Ⅱ光化学效率（ΔF/Fm′）、电子传递速率（ETR）和单位叶面积ATP含量均降低，而胞间二氧化碳浓度（Ci）和叶绿素荧光非光化学猝灭（NPQ）增加。