渗透势

叶片相对含水量（RWC）、渗透势随基质水分减少而降低，渗调能力逐步增强。

The leaf RWC and osmotic potential decreased with decreasing of moisture content , but the osmotic adjustment increased .

结果表明，NaCl处理的无机离子总含量急剧增加，其中Na＋、Cl－增加最多，占总计算渗透势（COP）的71%～88%，总无机离子占COP的95%～97%。

The results showed that under NaCl stress , the sum of inorganic ions had a significant increase and their contribution to the calculated osmotic potential ( COP ) was up to 95 % to 98 % .

K＋和可溶性糖变化，以渗透势下降最低时积累最多，是棉花干旱时主要的渗透调节物质。

In addition , K and soluble surger is important osmotic adjustment substance during diurnal changes .

生长在PEG渗透势培养液中的不同抗旱类型大豆品种的生长、生理反应有相同的趋势。

The various drought resistance types of soybean cultivars were treated with the culture solution containing PEG showed that they have same trend in their growth , physiological reaction .

研究了影响甘蓝型油菜离体下胚轴再生过程中试管苗玻璃化产生的几个因子，试验发现：调整激素6-BA与NAA的浓度、增加蔗糖的浓度提高渗透势对玻璃化无影响；

Some factors affecting vitrification of rape in vitro were studied . The results showed there were no effects by adjusting concentration of 6-BA and NAA and improving sucrose concentration to increase osmosis .

嫁接苗的水势和渗透势及可溶性糖与脯氨酸含量多显著高于自根苗，两个嫁接苗相比，WG显著高于BG。

Graft seedlings showed higher water potential , osmotic potential , soluble sugar and proline contents compared with own-root seedlings , and those of in WG were higher than in BG .

不同处理的实测渗透势（MOP）均小于COP，说明在这些条件下，还有其它的渗透剂参与盐地碱蓬幼苗的渗透调节。

The measured osmotic potential ( MOP ) from each treatment was always lower than the COP , which indicated that the other osmotic solutes were involved in the osmotic adjustment in S. salsa seedlings under these circumstances .

幼苗，15d后测定叶片中主要有机溶质和无机离子的含量及叶片渗透势和渗透调节能力。

The content of the main inorganic ions and organic solutes , the osmotic potential and osmotic adjustment ability of leaves were determined in 15 days after treatment .

结果表明：被测树木小枝初始质壁分离时的整体渗透势（πP）及与其相对应的小枝整体相对含水量（RWC）可以作为比较树木耐旱性强弱的生理指标。

The results showed that the whole Osmotic Potential (π _P ) and Relative Water Content ( RWC ) of measured branches in the early period when the protoplasm separated from the cell wall could be used as physiological index for comparing the drought-endurance of trees .

在不同渗透势NaCl和MgCl2培养液中，当外部培养液渗透势较高时，幼苗脯氨酸含量较低，随着外部培养液渗透势的下降，体内脯氨酸含量相应增高。

In NaCl and MgCl_2 solutions of different osmotic potentials the contents of proline were lower when osmotic potentials of external solutions increased . And proline content of seedlings enhanced with the decrease in osmotic potentials of external solutions decrease .

以不同渗透势的PEG（6000）溶液模拟水分胁迫条件，通过相对发芽率、萌发抗旱指数、活力指数3个指标，研究了14个不同地理种群紫茎泽兰（EupatoriumadenophorumSpreng.）

Relative germination rate , promptness index , vigor index of crofton weed ( Eupatorium adenophorum Spreng . ) from 14 populations were tested under different osmotic potentials ( PEG6000 ) to evaluate their drought resistance using the fussy subordinate function .

末期干旱降低水势，但不影响渗透势。

Meanwhile , terminal drought reduced leaf water potential but not osmotic potential .

渗透势都降低，但幅度不大，电解质外渗率升高，但不显著。

Osmotic potential decreased not obviously , and electrolyte leakage rate increased not significantly .

温度、培养基成分和渗透势对新疆雪莲种子萌发的影响

Effects of Different Temperature , Culture Media and Osmotic Potentials on Seeds Germination of Saussurea involucrate

乙烯利对抗旱性不同的高粱品种水势和渗透势的影响

Effect of Ethephon on Water Potential and Osmotic Potential in Two Sorghum Cultivars Differing in Drought Resistance

盐胁迫造成的盐害首先表现为低渗透势作用和离子毒害等。

Primary symptoms of salt damage caused by salt stress comprise low osmotic potential effect and ion toxicity .

故中旱生植物和多浆旱生植物并不主要依靠积累脯氨酸来调节渗透势确保水分的供应。

Thus succulent xerophytes and mesophytes did not mainly depend on accumulating free proline to adapt to arid environments .

绿豆幼苗上胚轴伸长生长与细胞渗透势的相关性

Correlation between osmotic potential and growth in relation to water stress and cotyledon excision in epicotyls of mung bean seedlings

胞外电阻、胞内电阻和弛豫时间对不同的渗透势具有显著或极显著的线性关系。

Extracellular resistance , intracellular resistance and relaxation time behaved significant or extremely significant linear relationship with different osmotic potential .

温度和水分状况对叶片渗透势的影响与叶水势不同，随温度升高和水分胁迫的加剧，叶片渗透势则呈先降后升趋势。

When the temperature rises and the water stress becomes bigger , the leaf osmotic potentials show down first and then up .

盐分非常显著地降低了土壤的水势，可以用盐化土样的水势与脱盐处理土样的水势估算盐化土样的渗透势。

Osmotic potential could be estimated by the difference between the potential of natural salt-affected soil and that of the salt-leached soil .

稀土元素能缓解水分胁迫下小麦幼苗叶片渗透势的降低，减少离子的渗漏，明显提高抗旱性。

Rear earth can slow down the reduction of osmotic potential wheat seedlings and decrease as well as membrane permeability under water stress .

总体趋势是，根和茎的长度生长随着溶液渗透势的增加而降低；

As a whole , the trend is that the length of root and stem is reducing gradually with the increased osmosis potential ;

通过对作物叶水势和渗透势变化幅度的比较，说明小麦的渗透调节能力和抗旱性能均大于玉米。

Though the comparison between leaf water and osmotic potentials changes , the accommodation osmotic power of wheat are higher than that of maize .

随着溶液渗透势的增加，对根和茎生长的抑制作用增强；

Owing to the inhibition to the root and stem improves with the increased osmosis potential ; its length is opposite to its weight .

培养液的渗透势越低，培养时间越长，则脯氨酸氧化酶的活性越低，且游离脯氨酸的含量越高。

The results showed that free proline content increased markedly and proline oxidase activity decreased with decreasing osmotic potential of external solution or prolonged culture time .

认为AM菌菌丝的直接吸收作用和菌根间接调节植物渗透势的双重机制来提高植物的抗旱性。

It was concluded that the increasing of drought resistance by AMF was through mechanism of both direct absorption of hypha and indirect regulation of osmotic potential .

三种针叶树种初始失膨渗透势、叶干重和含水量之间关系的研究

Study on the relationship between the bulk-averaged osmotic potential at inital loss turgor pressure , leaf dried weight and leaf saturation water content of three conifer species

表现为叶片叶绿素含量提高，光合作用能力增强，可溶性蛋白含量上升，叶片渗透势降低。

Exogenous salicylic acid could increase the chlorophyll content and photosynthesis rate , raise the content of soluble protein of leaves . It also could decrease the leaves osmotic potential .

研究结果表明：（1）两种变异体具有较高的脯氨酸含量和较低的渗透势；

The results showed that : ( 1 ) Free proline content in the two variants were higher than that in the original type , and their osmotic potentials were lower .