Abstract: This study aims at exploring the effects of acetyl glucose on the growth and biochemical mechanisms of wheat seedlings under the alkali stress. Shannong 129 wheat varieties was used as experimental material to determine ecophysiological indicators of wheat seedlings,setting 7 experimental treatments,W(Distilled water),CK(60 mmol/L NaHCO₃+ Na₂CO₃),T1(CK+1 mmol/L Ac-G),T2(CK+2 mmol/L Ac-G),T3(CK+3 mmol/L Ac-G),T4(CK+4 mmol/L Ac-G),T5(CK+5 mmol/L Ac-G). The results indicated that the optimal dose to alleviate the inhibition of wheat seedlings growth under alkali stress was 4 mmol/L Ac-G,and the pH value of liquid alkali stress was reduced to 7.44. With the increase of acetyl glucose dose,seedling height,root length,root to shoot ratio,seedling biomass,the content of chlorophyll a and chlorophyll a/b of wheat seedlings reached the highest value under T4 treatments. The soluble sugar and protein in wheat seedlings leaves were substantially increased. The superoxide dismutase and peroxidase activities of wheat seedlings were significantly increased and reached the highest value under T4 treatments,while the accumulation of malondialdehyde (MDA) and the electrical conductivity of leaching solution in wheat seedlings leaves decreased compared to control. This study suggested that acetyl glucose could effectively alleviate the inhibitory effects of alkali stress on wheat seedling growth,which could provide an important theoretical basis for the of saline alkali soil improvement.

Key words: Acetyl glucose, Alkali stress, Wheat, Physiological and ecological indexes

CLC Number: 

• S156.2

• S512.01