NaCl胁迫对灰绿藜中有机渗透调节物质的影响

目的]为了研究NaCl胁迫对灰绿藜根、茎、叶中渗透调节物质的影响,探寻灰绿藜的耐盐机理。方法]分别用不同浓度的NaCl溶液(0、100、200、300、400和500 mmol/L)处理灰绿藜,5、10、20和30 d后测定根、茎、叶中相对含水量、可溶性糖、脯氨酸、可溶性蛋白、甜菜碱含量的变化,并测定株高。结果]随着NaCl浓度的增加,灰绿藜根、茎、叶中的相对含水量逐渐降低,可溶性糖、脯氨酸以及可溶性蛋白的含量逐渐升高;根中的甜菜碱含量始终都高于茎和叶的;株高随着NaCl浓度的升高而降低。结论]渗透调节可能是灰绿藜耐受盐胁迫的内在生理机制之一。

Effect of NaCl Stress on Osmotic Adjustment Solute in Chenopodium glaucum L

Objective]The research aimed to research the change of osmotic adjustment solute of Chenopodium glaucum L.under NaCl stress and discuss salt resistance mechanism.Method]Chenopodium glaucum L.was treated by NaCl stress with concentrations of 0,100,200,300,400 and 500 mmol/L for 5,10,20 and 30 days,and then root,stalk and leaves were taken out to be measured.Result]With the increase of NaCl concentration,relative water content in Chenopodium glaucum L.descended gradually,soluble sugar,proline and soluble protein contents increased,and along with the time of NaCl stress,relative water content increased gradually,and soluble sugar,proline and soluble protein contents descended gradually.Conclusion] Osmotic regulation may be one of the inherent physiological mechanism of salt tolerance of Chenopodium glaucum L.