胁迫的

The results indicated that the seed vigor of Brudzynska, Bezenchukii Bromus inermis is lower under the level of 5%, but it is high under the level of 10%-20%.

在5%PEG的干旱胁迫下，Brudzynska、Bezenchukii无芒雀麦的种子活力较低，但在10%~20%PEG的干旱胁迫下，两者的种子活力较高，而内蒙古正镶蓝旗野生沙地雀麦和内蒙古克什克腾旗野生沙地雀麦种子活力较低。

Four primers screened from 17 primers were used to analyze genetic diversity between one population in the mine deposits and one in noncontaminated soil, the results showed that a higher level of DNA diversity was detected in the plants grown in the mine deposit. The results above indicated that Commelina communis grown in copper mine deposits had evolved adaptation under heavy metal stress, and such adaptation had a geneic basis.

从17条引物中筛选出4条对其中1个铜矿山种群和1个正常土壤种群进行种群内的遗传多样性研究，结果显示污染种群内基因遗传多样性水平高于未污染种群，上述结果说明了在铜胁迫下矿山鸭跖草种群已经进化了对铜污染的适应性，并且较高水平的遗传多样性可能是植物适应重金属污染胁迫环境的基础。

Using four different Na_2CO_3 concentration as simulating alkaline stress,the relative alkali damage rate of rice germinative energy and germination rate at germination period,RADR of rice root length,seedling height and root number at early seedling stage were looked as evaluation indexes,so the alkaline stress concentration for evaluation of alkaline tolerance at germination period and early seedling stage in rice was studied.

通过采用4种不同浓度的Na2CO3模拟碱胁迫，以水稻发芽期发芽势和发芽率的相对碱害率以及幼苗前期的根数、根长和苗高的相对碱害率为鉴定评价指标，研究水稻发芽期和幼苗前期耐碱性鉴定的碱胁迫条件。

The increscent of species biomass percentage, which is used to present the competitive ability of species growth, was not significantly correlated between un-drought plots and drought plots. This means that drought stress has significant effect on the competitive hierarchies of species growth characteristic.

以消亡百分率代表物种存活特征竞争能力，干旱胁迫和正常对照样地内物种消亡百分率之间存在显著正相关，存活特征的竞争等级未发生明显的变化，说明干旱胁迫对物种存活特征的竞争等级的影响作用较弱。

Membrane permeability, malondialdehyde contents and activities of antioxidant enzymes in Kochia prostrata seedlings were studied under different concentrations of salt stress. The result showed that the membrane permeability and MDA contents increased with the increasing of salt concentrations.

通过不同浓度的盐胁迫对木地肤Kochia prostrata幼苗细胞膜透性、丙二醛和3种保护酶活性的测定，获得以下结果：随着盐浓度的增加和胁迫时间的延长，幼苗叶片的细胞膜透性呈递增趋势，且浓度≥150mmol/L时，细胞膜透性与对照有极显著差异(P.01)。

Adaptation to seawater in Lactuca indica was mainly caused by strong K+ selective absorption and transport. Furthermore, accumulating soluble sugar and protein were important osmotica in Lactuca indica seedlings and it could be characterized as an indicator of salt tolerance.

海水胁迫下，苦荬菜幼苗维持一定的K+离子选择性吸收是其一定程度上盐适应的重要原因；同时，可溶性糖、可溶性蛋白的积累作用是苦荬菜幼苗盐胁迫下的重要渗透调节物质，可以作为其抗盐性的生理参数。

Nigrum and S. melongena seedlings presented a different rule. The leaf SOD activities of S. nigrum increased under low Cd (≤50 μM) and then decreased, POD and CAT increased continuously. However, SOD activities of S. melongena gradually decreased, POD activities increased and the CAT presented the rule of drop-rise-drop. SOD, POD, and CAT in the leaves of S. nigrum plaved an important role against Cd stress.

龙葵叶片SOD活性随镉胁迫程度的增加先增高后降低，POD和CAT活性基本上表现为逐渐上升趋势，而茄子叶片中SOD活性逐渐下降，POD逐渐上升，CAT呈先降后升又降的变化规律，龙葵体内的3种抗氧化酶对镉胁迫起到较强的抗氧化保护作用。

The results showed that the growth of Jinguang plum seedlings were remarkably restrained by salt stress. With the increasing of salt concentration, the plant height, leaf area, leaf fresh weight, leaf dry weight, stem dry weight and root dry weight were remarkably decreased, and the chlorophyll content, photosynthesis rate, transpiration rate and stomatic conductance in leaves were declined too, but the intercellular CO2 concentration was inclined.

结果表明盐胁迫抑制了金光杏梅幼苗的生长，随着盐浓度的升高，金光杏梅的株高、叶面积、叶鲜重、叶干重、茎干重、根干重均显著降低；叶片叶绿素含量、净光合速率、蒸腾速率、气孔导度亦显著降低，且盐浓度越高，下降幅度越大；细胞间隙CO2浓度随着盐浓度增加而增大，表明盐胁迫下非气孔因素是导致金光杏梅叶片光合速率下降的主要原因。

The germinating tests were performed on Fraxinus velutina seeds from saline land and none-saline land under different NaCl stress. The germination indexes and the biochemical indexes of the seedlings were measured for studying the differences of germination abilities and protective enzymes between two kinds of the seeds under NaCl stress.

将盐碱地和非盐碱地上采集的绒毛白蜡种子在不同盐胁迫下做发芽试验，测定两类种子的发芽指标和幼苗的生理生化指标，比较它们在不同盐胁迫下的发芽情况、幼苗保护性酶活性、可溶性蛋白和丙二醛含量的差异。

As the rice furling, Yangdao No.

低浓度的重金属胁迫能明显诱导萌发籽粒中一些淀粉同功酶的表达，而高浓度的重金属胁迫则显著抑制某些淀粉同功酶的表达。

We have no common name for a mime of Sophron or Xenarchus and a Socratic Conversation; and we should still be without one even if the imitation in the two instances were in trimeters or elegiacs or some other kind of verse--though it is the way with people to tack on 'poet' to the name of a metre, and talk of elegiac-poets and epic-poets, thinking that they call them poets not by reason of the imitative nature of their work, but indiscriminately by reason of the metre they write in.

索夫农 、森那库斯和苏格拉底式的对话采用的模仿没有一个公共的名称；三音步诗、挽歌体或其他类型的诗的模仿也没有——人们把&诗人&这一名词和格律名称结合到一起，称之为挽歌体诗人或者史诗诗人，他们被称为诗人，似乎只是因为遵守格律写作，而非他们作品的模仿本质。

The relationship between communicative competence and grammar teaching should be that of the ends and the means.

交际能力和语法的关系应该是目标与途径的关系。