干旱

In order to study the expression and functional characteristics of dehydrin gene during different growth, and make the polycolonal antibody, using wheat plumelet under the water deficit condition as experiment material, and its total RNA was extracted. The target dehydrin gene through RT-PCR was got, connect to the cloning vector PUCM-T, recombination expression plasmid PET-32a-wzy1-1 was constructed according to recombination of cloned vector PUCM-T-WZY1-1 of wheat dehydrin gene in this experiment.

为研究小麦在不同时期脱水素基因的表达情况和生物学功能及抗体制备，以小麦幼芽为材料，经干旱胁迫处理后，提取总RNA，通过RT-PCR得到小麦类脱水素基因片段(WZY1-1)，再连接至克隆载体PUCM-T，并成功构建重组表达质粒PET-32a-wzy1-1，将阳性重组质粒转化于受体菌BL21(DE3)感受态细胞中，经IPTG诱导表达，进行表达产物的聚丙烯酰胺凝胶电泳检测。

External regulator of positive feedback is variation of precipitation amount and frequency of extreme precipitation. It is shown that desertification is predetermined by the decreased precipitation as well as by the decrease in frequency of precipitation. In the second half of 20th century importance of man-induced degradation of dry lands as additional regulator of positive feedback has been increased.

正反馈的外部调节因子是降水量的变化和极端降水事件的出现频率，降水量减少以及降水频率的降低直接影响沙漠化的程度。20世纪下半叶，人类因素导致的干旱土地退化作为另外的正反馈调节因子，其重要性正在增加。

The result showed that the Peroxidase activity and the praline content are first all increased and reduced later during the drought stress.

大多数草坪草属于中生植物，这类植物在其生命周期中要求一定水分环境，不能忍受过分的干旱胁迫[1]。

In the osmotic adjustment, soluble sugar had the primary function under the early stage of drought stress, while it was praline under the late stage of drought stress.

在渗透调节上，刺槐在干旱胁迫初期可溶性糖起主要作用，在胁迫后期脯氨酸起主要作用。

The increment of praline content and SOD activity in the seedlings raised in organic soil base was more than that in the seedlings raised in nutritional soil base under moderate drought stress.

在中度干旱胁迫条件下，有机基质所育秧苗水稻叶片的脯氨酸含量和SOD活性增加的幅度大于营养土所育秧苗。

Pigeon-like bird of arid regions of the Old World having long pointed wings and tail and precocial downy young .

东半球干旱地区象鸽子的鸟，翅膀和尾巴长而尖，幼体刚孵出便覆有绒毛。

The coordinated operation of these transmitters apparently caused the long drought in California during the 1980s by creating a high pressure ridge about 800 miles off the coast of California and forcing it to remain there for several months.

协调运作，这些发射机，显然是造成长期干旱在加利福尼亚州在20世纪80年代，创造一个高压力岭约800英里沿海海面的加利福尼亚州和迫使它继续存在数月之久。

The research aimed to study the effect of different drought stress on the contents of proline and soluble protein.

［目的］明确不同强度干旱胁迫对烟草脯氨酸和可溶性蛋白质含量的影响。

In water stress, the soil humidity significantly negative correlated with the content of proline and soluble sugar.

在干旱胁迫下，土壤含水量与菜豆和辣椒幼苗体内的脯氨酸含量及还原糖含量呈明显负相关。

Proline accumulation in leaves increases with increased salt and water stresses.

叶片中脯氨酸的积累随着土壤含盐量和土壤干旱程度的增加而增加。

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。