冠醚对烟草根系钾离子运转及气孔开关度的影响

Effect of Crown Ethers on Root System Potassium Transport and Stomatal Opening and Closing of Tobacco

研究了冠醚（苯并－１５冠－５）对烟草根系钾离子运转和气孔开关度的影响。结果表明，冠醚在低浓度下（５×１０－４ｍｏｌ·Ｌ－１）能显著促进烟草根系对钾离子的吸收。烟叶气孔经５×１０－４ｍｏｌ·Ｌ－１冠醚溶液处理可明显抑制气孔开放，而经５×１０－４ｍｏｌ·Ｌ－１冠醚与５×１０－２ｍｏｌ·Ｌ－１氯化钾混合溶液处理则明显促进气孔开放。通过分析认为，作为高效传递钾离子的人工合成载体。

The effect of crown ethers on root system potassium transport and stomatal opening and closing of tobacco was studied .Results indicated that low concentration 5×10 -4 mol·L -1 , crown ethers obviously promoted the absorption of tobacco root system to potassium and the opening of tobacco stomate was obviously restricted.However,the mixed solution of 5×10 -4 mol·L -1 crown ethers and 5×10 -2 mol·L -1 potassium chloride obviously promoted the opening of stomate.So crown ethers,may be used for potash absorption efficiency agent and transpirom resisting agent of drought in tobacco plant.