蚕豆(Vicia faba L.)叶片对土壤干旱胁迫的适应机理

THE ADAPTABILITY OF VICIA FABA L. LEAVES TO SOIL DROUGHT

蚕豆在不同土壤干旱条件下的盆栽试验结果表明 ,蚕豆对土壤干旱胁迫有一定的适应能力 .这种适应能力主要通过三种调节过程实现 ,即通过叶片水分饱和亏缺的反馈控制实现的气孔运动的调节 ;通过K+、游离脯氨酸和可溶性总糖积累实现的渗透调节 ;

The pot culture experiment of Vicia faba L. seeded in different soil drought shows that Vicia faba L.has certain adaptability .Such adaptability has reached principally through three regulation processes. Stomatamotion regulation is reached through feedback control of leaf blade water content saturation deficit. Permeability regulation is reached through the accumulation of K +、free proline and soluble .Regulation of free radial balance is reached through the produce and clean of the active oxygen.