胁迫的

The results showed the autotetraploid and triploid cultivars had lower cold resistance than that of diploid under the condition of 12℃ temperature and 1000Lx. With the increase of stress time, the SOD and POD activities of three ploidy cultivars were gradually increased.

低温胁迫对不同倍性西瓜叶片膜脂过氧化及保护酶的影响：通过对蜜枚西瓜幼苗进行低温弱光处理（12℃，光强为10001x，光/暗处理时间为14h/10h）的试验结果表明，在没有冷诱导时M4x、M3x的耐冷性不如M2x。

We have constructed a bivalence expression vector with SsNHX1 and AVP1 and transformed them into Arabidopsis. The results showed that the transgenic Arabidopsis plants 101 and 127 grew much better than wild type plants in the medium containing 100 and 200 mmol/L NaCl, which further indicated the important roles of Na〓 compartmentalization in vacuoles on plant salt tolerance.

2构建了同时含有液泡膜Na〓/H〓 antiporter与H〓-PPase基因的双元植物表达载体并转入拟南芥，筛选到在100和200mMol/LNaCl胁迫环境下生长发育均明显好于野生型的转基因拟南芥植株101和127，进一步验证了液泡Na〓区隔化在植物耐盐方面的重要作用。

The results showed that exogenous salicylic acid at appropriate concentrations reduced cell relative permeability and lipid peroxidation, increased the content of chlorophyl and activities of antioxidative enzymes, thus reduced the injury caused by NaCl and enhanced the growth of strawberry.

结果表明：适当浓度的水杨酸能够降低盐胁迫下草莓叶片质膜相对透性和过氧化程度，提高叶绿素含量和抗氧化酶活性，从而缓解NaCl对草莓的伤害，改善草莓的生长状况。

The decrease of chloroplast reduced the photosynthesis rate and decreased energy consumption and water losses.

在高强度风沙流的胁迫下，叶绿体的减少可降低光合速率，避免过多水分和生命能量的消耗。

It is very important to increase the resisting and coercing ability at low temperature.

抗冻蛋白被发现于低温环境下生存的生物体中，它能够吸附在冰晶表面并改变冰晶的生长形态，对于增加植物的抗低温胁迫能力有重要作用。

Coleoptile length were observed in different varieties, and the differences among varieties were consistent under different simulated drought stresses, therefore, coleoptile length could be used in the evaluation of drought in wheat at the early stage.

在不同程度的干旱胁迫处理下，各品种的胚芽鞘长度变化趋势大致相同，因此利用胚芽鞘长度可以在早期对小麦的抗旱性进行鉴选。

A rapid, efficient protocol to detect the toxicity of Cu2+ stress using wheat coleoptile, which is simple, uniformal in structure and sensitive, was established. By using this model, the mechanism of Cu2+ stress leading to the inhibition of cell elongation was also studied.

本文以小麦为材料，研究不同浓度Cu2+对小麦种子萌发和幼苗生长的影响及机理；利用小麦胚芽鞘结构简单、反应敏感的特点，探索建立小麦胚芽鞘快速检测铜离子毒害模式，并利用此模式研究了铜离子胁迫对细胞伸长抑制作用的机理。

In this research, the effect of osmotic stress (-0.975 MPa) on the coleoptile and radicle growth was studied with 17 drought resistant wheat genotypes at germination stage, and several physiological and biochemical indices were analyzed.

为给小麦苗期抗旱鉴定提供依据，以17个抗旱性不同的小麦品种为材料，在参透胁迫(-0.975MPa)条件下，研究了小麦萌发后期部分生理生化指标的变化，并在旱棚池栽控水条件下对品种的抗旱性进行了比较鉴定。

5During chilling stress,Ca~(2+)treatment could delay the decrease of Fm,Fv/Fo, Fv/Fm,Fv"/Fm",ΦPSⅡ,qP,ETR;And it could delay the increase of Fo and qN of the heat-shock-induced cucmber seedings.Then it delay the injury of PSⅡwhich caused by low temperature.

5钙处理能减缓热激黄瓜幼苗冷胁迫下Fm、Fv/Fo、Fv/Fm、Fv′/Fm′、φPSⅡ、qP、ETR的下降和Fo、qN的上升，从而缓解了低温对PSⅡ的损伤；而EGTA处理则相反。

The rapier thrusts are so swift , we can hardly realize their deadliness before they are renewed in showers , with sometimes a blow as of a bludgeon to vary the effect .

该剑杆织机的主旨是如此迅速，我们很难实现自己的致命之前，他们再次在骤雨，有时一个打击，作为一个胁迫，以不同的影响。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。