胁迫的

Taking the seedlings of Dodonaea viscosa, Leucaena leucophala and Tephrosia candida as experimental materials, through drought stress treatment on pot seedlings with watering treatment group as control, the changes of leaf relative water content, relative plasma membrane permeability and proline content under drought stress were studied.

以金沙江干热河谷主要造林树种坡柳、银合欢和山毛豆的苗木为实验材料，通过盆栽苗自然干旱胁迫，同时以浇水处理为对照，探讨了干旱胁迫下3树种苗木叶片的相对含水量、质膜透性以及脯氨酸含量的变化情况。

To provide sciencetenability for bioremediation of copper contamination and its toxicity, copperaccumulation and the adaptation of Eichhornia crassipes to copper stress wereinvestigated in this study. Further study was carried out for copper-removal of acopper-resistant strain isolated from the root of E.

本研究通过分析凤眼莲对铜的累积作用及其生理响应，阐明铜胁迫下凤眼莲的生理适应机制，并探讨凤眼莲根系抗铜菌的去铜作用及其在缓解菹草铜胁迫毒害中应用潜力。

Overall, in responses of plant plasma membranes to stresses, adaptive responses were usually observed under gradual stresses, whereas excitive responses usually happened under abrupt experimental stresses.

总之，与实验室人为短期而剧烈的胁迫下植物发生的应激性反应不同，在缓慢胁迫下，植物细胞质膜的响应更多地表现为适应性反应。

Three donor wheat all show good character and had little genotypical difference in the aspect of inducement、differentiation、regeneration etc. They could all nice genotypical cultivars for wheat transformation. 3160 embryos have been used to transformation (960 embryos belongs to Atlas66, 1000 embryos belongs to EM12, 1200 embryos belongs to Scout66 respectively), At last, we got twenty-six of which were positive cultivars through PCR. The preliminary whole transformation frequency was 0.82 percent. Also the citrate synthase activities of the leaves of T_0 progeny show 5～9 higher than the control lines.

转化过程中分别使用了960个Atlas66、1000个EM12和1200个Scout 66幼胚(总记3160个)，经抗性筛选、CS与标记基因的PCR检测初步表明有26株为阳性植株，总转化率为0.82%；同时进一步对T_0代植株叶片柠檬酸合酶以及T_1代植株经铝胁迫后对其根尖分泌物进行检测，结果在上述转化植株中检测到了柠檬酸合酶的活性，且转化材料比对照材料平均高出了5～9倍；同时铝胁迫后，T_1植株根尖检测到了苹果酸及柠檬酸的分泌。

In order to investigate the physiological characteristics of Lysimachia plants in high temperatures, a pot seedling experiment in artificial climatic chamber was conducted using four Lysimachia species. The effect of high-temperature stress on plasma relative permeability, protective enzyme activity and leaf osmoregulatory molecules in plants were analyzed.

为探明珍珠菜属植物高温致伤的生理特性，为其园林推广提供依据，以4种珍珠菜属植物为材料，通过盆栽在人工气候箱内进行高温胁迫，研究了不同程度高温胁迫对4种珍珠菜属植物叶片的质膜透性、保护酶活性和渗透调节物质的影响。

Under imitated daily field microclimatic conditions for heat stress, the rice cultivar "Jinyou63"(which is a hybrid rice combination) was treated with a consecutive 3-day heat stress during meiosis in phytotron. Anther and pollen tissues at different development stages after subjected to heat stress were sampled and analyzed for transverse abnormalities.

本研究模拟田间典型灾害天气条件，在人工气候箱内对杂交水稻&金优63&花粉母细胞减数分裂期进行连续3 d的热害胁迫处理，对处理后不同发育时期的花药组织取样切片观察，从组织、细胞水平探讨水稻受高温胁迫后花药可能出现的早期异常特征。

The bad environment is a very important nonbiological force factor influencing agricultural production and ecological environment.

不良环境是影响农业生产和生态环境的非常重要的非生物胁迫因素，在各种非生物胁迫中，低温对植物的影响最为突出。

The bad environment is avery important nonbiological force factor influencing agricultural production and ecological environment.

不良环境是影响农业生产和生态环境的非常重要的非生物胁迫因素，在各种非生物胁迫中，低温对植物的影响最为突出。

With the same DH population and genetic map, a total of 24 QTLs were identified for five traits. Under salt stress, nine (37. 5%) QTLs were detected, while in the nonstress environment, 17 QTLs (70.8%) were detected.

在水稻生长的全生育期对盐胁迫环境与非胁迫环境下5个重要的农艺性状分别进行调查，总共检测到24个QTL，分布在除第9、11号染色体外的各染色体上。

However,compared to Cd~(2+) stress alone, treatment of SNP+Cd~(2+) caused more increases in SOD,CAT and POD activities, a decrease of H_2O_2 level and MDA content in leaf and root ofmung bean seedlings. These results indicated that exogenous NO induced increases inSOD, CAT and POD activities, which scavenged H_2O_2 and resultantly inhibitedmembrane lipid peroxidation in leaf and root of mung bean seedlings under Cd~(2+) stress.

说明NO通过诱导膜保护酶活性的提高，降低了活性氧水平，从而使Cd~(2+)胁迫诱导的膜脂过氧化程度降低，这可能是外源NO明显缓解Cd~(2+)胁迫抑制绿豆幼苗生长发育的原因之一。

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。