胁迫地

The results indicated that the content of MDA and root-shoot ratio were increased, but the dry weight of root, total root length, secondary root number, root activity, the SOD activity of root, the height of plant and aboveground dry weight of broomcorn millet decreased significantly with drought treatment regardless of fertilizing or not.

不同施肥水平下黍子根系对干旱胁迫的生物学响应研究表明，无论施肥与否，拔节期或抽穗期干旱胁迫均会使黍子根重、根长、根活力、次生根数、根系SOD活性及株高与地上部干重明显降低，MDA含量明显增高；水分胁迫解除后，黍子根系增长迅速，表现出明显的补偿效应和根系对水分反应敏感的特点，但干旱造成的不利影响在后期未能完全补偿。

As far as free proline content was concerned, that of EI plants was less than EF plants due to higher water-holding ability of EI plants (such as in field plot and field pot sustained drought stress), or due to less damage of membrane of EI plants (such as field pot cyclic drought stress and greenhouse osmotic stress).

至于脯氨酸含量的变化，或是由于感染植株保持体内水分的能力更强（固定样地和田间盆栽持续性干旱胁迫下），或是由于感染植株叶细胞膜结构受到的伤害程度更小（田间盆栽周期性干旱胁迫和温室渗透胁迫下），感染植株的游离脯氨酸含量均低于非感染植株。

With the increase of NaCl concentration and prolonging of stress time,the contents of Na in leaves of the untrasgenic plant was more distinct than the transgenic plant,especially under 0.9%NaCl stressed after 40 days, the contents of Na was 2.0-6.2 times compared with the transgenic plant in the same desposition,therefore,the un-transgenic plant died under this concentration in the end .

随着盐浓度的增加和胁迫时间的延长，对照植株叶片中Na 含量极显著地高于转基因植株，特别是在0.9%盐度下胁迫40d，对照植株的Na 含量极高，是该处理下转基因植株的2.0-6.2倍，因此，该浓度下的对照植株最终死亡。

The purpose of this study isto observe the seed germination in different salt solutions ,the growth of the seedling underthe salt stress and recovery growth. It can provide some theory evidence for the developmentof halophyte resource.

本研究的目的就是研究盐地碱蓬在不同盐胁迫下种子萌发、幼苗生长及胁迫解除后的生长情况，为盐生植物资源的开发利用提供理论依据。

The contents of Chla and Car were sensitive to low temperature stress, it seems that they were vulnerable to low temperature stress and partly decomposed. Relatively, the content of Chlb changed little. The ratio of Chla/b had positive linear correlation with temperature, which meant the photosynthetic ability of podocarpus fleuryi Hickel seedlings declined under winter low temperature stress.

叶片中叶绿素a和类胡萝卜素含量对低温胁迫反应较为敏感，容易遭受低温胁迫而部分地分解破坏，含量下降，而叶绿素b则相对变化较小，Chla／b值呈现与温度的线性正相关，显示了长叶竹柏幼苗在冬季低温胁迫下光合能力的下降情况。

To study the ecophysiological effects of low temperature stress on podocarpus fleuryi Hickel seedlings, two-year-old seedlings were selected as experimental material. We conducted comparative study. On the one hand, seedlings were separately placed in the plots located at the top, half-way-up and the foot of Jinyun Mountain (different altitudes at Jinyun Mountain led to the difference in air temperature) and subjected to winter low temperature stress. On the other hand, in laboratory, seedlings were exposed to simulated low temperature stress which were artificially controlled .

为了探讨低温胁迫对长叶竹柏幼苗的生理生态影响，本试验选取长叶竹柏的二龄幼苗为试验材料，在试验方法上采取了对比研究方法：一方面，利用缙云山不同的海拔造成的温度差异，分别将幼苗置于山顶、山腰和山脚下三个样地中，进行野外冬季自然低温胁迫处理；另一方面，在实验室中，利用人工控制的不同低温进行模拟低温胁迫处理。

Salsa under salt stress indicated that the expression of tonoplast H〓-ATPase subunit H in leaves, shoots and roots were all significantly induced by NaCl stress.

本实验较为详细的研究了盐地碱蓬液泡膜H〓-ATPase H亚基在盐胁迫下的表达变化，发现其在盐地碱蓬植株根、茎、叶的表达均明显被盐胁迫所诱导。

Water stress experiments on Caryopteris mongholica Bunge of six provenances were conducted under three intensities selected by the provenance environments: mild, moderate and severe, of which the soil moisture were 80～85%, 45～50% and 15～20% of the field capacity respectively.

中文摘要：以6个种源的1年生蒙古莸为试验材料，采用称重控水的方法，根据种源地的情况设置充足水分、中度胁迫、重度胁迫3个水分梯度，分别维持在田间持水量的80～85%、45～50%、15～20%开展水分胁迫试验。

This suggests that shoot apex is most sensitive to water stress and the ~(14)C-photoassimile distribution likely shifts from above-ground to root, being benefit to maintaining root growth and tolerance to water stress.

这表明茎尖对水分胁迫非常敏感，同化物向茎尖的运输受到抑制，运积重心由地上部转到地下部，从而有利于保持根系在胁迫条件下的生长，提高植物的抗旱性。

Western blot analysis with the antiserum ATP95 revealed a significant increase of protein amounts of the V-H〓-ATPase subunits B and c of S. slasa under 100 and 400 mmol/L NaCl treatment, which gave another evidence for a salt-induced coordinate up-regulation of V-H〓-ATPase subunits at transcription and translation levels. The coordinated salt-induced increase of subunit B, H and c of V-H〓-ATPase from S. salsa at transcription and translation levels indicated an increase of V-H〓-ATPase holoenzyme amounts, which might be the reason for the increase of V-H〓-ATPase activity of S. salsa under salt stress.

400 mmol／L NaCl处理盐地碱蓬植株分离其叶片液泡膜微囊进行Western-blot分析发现盐胁迫明显诱导了盐地碱蓬液泡膜H〓-ATPase B、c亚基蛋白的表达，证明盐胁迫下，盐地碱蓬液泡膜H〓-ATPase各亚基在转录、翻译水平存在协同表达。100、400mmol／L NaCl处理亦明显增加了盐地碱蓬叶片液泡膜微囊H〓-ATPase活性，表明盐胁迫下，盐地碱蓬液泡膜H〓-ATPase各亚基在转录、翻译水平的协同表达增加了H〓-ATPase全酶的数量，进而增大了H〓-ATPase的活性。

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。