Study On The Osmotic Adjust System Resistance Under NaCl Stress Of Leymus Chinensis Treated By High Voltage Prick Electrostatic Field (HVPEF)

Leymus chinensis,as one of a perennial gramineous grass growing in the north of China, has many advantages such as high productivity, tolerance of dry, leanness-resistant and saline-alkali tolerance, abundance of nutrition, feels well and so forth. But the Germination percentage of the seed of Leymus chinensis is low, and recently many plains became saline-alkali and product has been destroyed because of the incorrect using of Leymus chinensis plains. So how to improve tolerance to stress has significant meaning in both product of Leymus chinensis and management and reformation of saline-alkali plains.Taking Leymus chinensis as samples in the experiment in this paper, organic osmotic adjust substance, inorganic osmotic adjust substance and weight of dry sample were determined. The influences of HVPEF on the osmotic adjust system Resistance of Leymus chinensis under NaCl stress were study.The results indicated: high-voltage prick electrostatic field promoted Leymus chinensis seedling to accumulate organic osmotic adjustment and affected the osmotic adjustment, ion equilibrium and the metabolism of sodium, kalium, calcium and nitrogen. when voltages of HVPEF was U=15 kV (D=100 mm),there was a different degree special accumulation in contents of organic osmotic adjustment substance except proline. Besides, HVPEF promoted promoted seedling to absorb K⁺ selectively and inhibited the absorption of Na⁺, advanced Ca²⁺ accumulation specially, reduced Na⁺/K⁺ and Na⁺/Ca²⁺; and there also was a special accumulation in contents of anions, so we can believe that 15 kV of high-voltage prick electrostatic field had improved seedling adaptation and adjustment capability to NaCl stress indeed for Leymus chinensis seeds.