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。
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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