NaCl和Na2SO4胁迫对玉米幼苗渗透调节物质含量的影响

研究了NaCl和Na₂SO₄胁迫对玉米幼苗电解质渗漏、根系活力及脯氨酸、可溶性糖、可溶性蛋白等渗透调节物质含量的影响。结果表明，玉米在NaCl作用下其电解质渗漏、根系活力及渗透调节物质含量的变化和Na₂SO₄胁迫相似，电解质渗漏、根系活力及渗透调节物质含量均随着盐浓度的增加而加剧。NaCl胁迫下增幅大于Na₂SO₄胁迫，表明NaCl胁迫对玉米幼苗的伤害大于Na₂SO₄胁迫。

Effects of NaCl and Na2SO4 Stress on Osmotic Adjustment Substances in Maize Seedlings

The effects of electrolyte leakage, roots activity and some osmotic adjustment substances such as proline, soluble sugar and soluble protein of maize seedling under NaCl and Na₂SO₄ stress were investigated. The results showed that the changes in electrolyte leakage, roots activity and osmotic adjustment substances of maize seedling under NaCl stress were same as that under Na₂SO₄ stress. The electrolyte leakage, roots activity and osmotic adjustment substances content were aggravate with the increasing of salt concentration. But the increasing extend under NaCl stress was greater than that under Na₂SO₄ stress, which showed that the injuries imposed by NaCl stress was greater than that by Na₂SO₄ treatment.