This phenomenon is mainly caused by the stomatal resistance.
这种现象是由于受气孔阻力的影响所致。
And no remarkable difference of leaf stomatal resistance was found between the two cultivars.
两个品种的叶片气孔阻力没有明显区别。
There is a great effect between photosynthetic speed and light intensity, air temperature, relative humidity and stomatal resistance.
光照强度、气温、湿度和气孔阻力等因子对光合作用产生显著影响。
Photosynthetic rate and chlorophyll content of flag leaf declined sharply, and leaf stomatal resistance increased rapidly in late period of senescence.
衰老后期，根系活力、叶片光合速率和叶绿素含量快速下降，叶片气孔阻力增加。
It was revealed that significant differences in leaf water potential, stomatal resistance, transpiration rate, and rate of water loss of excised-leaves existed among genotypes.
研究表明，叶水势、气孔阻力、蒸腾强度和离体叶片失水速率品种间均存在明显差异。
All the phenomena show: water flow resistance is the important prerequisite to cause transpiration fluctuation, and the latter can be the result of stomatal oscillation.
这些现象说明，水流阻力是蒸腾波动产生的重要前提条件，而蒸腾波动则可能是气孔开合波动的直接结果。
Thus the stomatal characteristics were regarded as reference indicators in evaluating the soybean drought resistance.
气孔特性与抗旱性有一定的关联，可作为评定大豆抗旱性的参考指标性状。
The stomatal diffusive resistance (SDR) of leaves is one of the indexes of the air-filtering ability of plants.
叶片气孔扩散阻抗大小是植物净化空气能力的指标之一。
Therefore, it is proposed that stoma density and stomatal conductance of the lower leaves on tobacco plant be used as a selection marker for disease-resistance breeding.
因此，下部叶气孔密度和气孔导度可以作为抗病育种的选择指标。
These results suggested that stomatal oscillations induced by atmospheric drought stress and root resistance were mainly a type of hydropassive movement.
结果说明荒漠干旱条件诱发的甘草气孔振荡可能主要是一种水被动过程。
Thedrought-resistance depend on the stomatal sensitivity to leaf NO content on the stomalevel, the stoma of dryland cultivar could rapidly response to the changing of leaf NOcontent.
抗旱性与气孔对NO含量变化的灵敏度有关，旱地品种对叶片NO含量的变化具有较快速的反应。
Thedrought-resistance depend on the stomatal sensitivity to leaf NO content on the stomalevel, the stoma of dryland cultivar could rapidly response to the changing of leaf NOcontent.
抗旱性与气孔对NO含量变化的灵敏度有关，旱地品种对叶片NO含量的变化具有较快速的反应。
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