Effects of Chlamydomonas debaryana powder on growth and physiological indices of wheat seedlings under salt stress
Salt stress is one of the most main abiotic stresses faced by plants.In terms of agricultural production,it is of great significance to study the effects of bio-fertilizers on plant physiological indices under salt stress.Currently,the effects of algae bio-fertilizer on salinized soil have been widely studied.However,its effects on plant physiological indices under salt stress remains to be unclear.Chlamydomonas debaryana powder was used as bio-fertilizer in this study.algae powder with different concentrations(0.25,0.5,1.0,2.0 g·L-1)were added to wheat seedling sandy soil under high salt stress,The biomass,soluble sugar content,soluble protein content,antioxidant enzyme activity,malondialdehyde content and ion balance of wheat were measured.The results showed that salt stress significantly inhibited the root length,stem length,dry weight and fresh weight of wheat,decreased the contents of soluble sugar and soluble protein,decreased the activity of antioxidant enzymes,and increased the content of malondialdehyde.The root length,stem length,dry weight and fresh weight of wheat increased significantly,the contents of soluble sugar and soluble protein increased,the activity of antioxidant enzymes increased,and the content of malondialdehyde decreased after algae powder was added at different concentrations.Correlation analysis showed that the algae powder could promote wheat growth,significantly change wheat physiological indices,and improve its salt tolerance.By comprehensive comparison,the effect of 1 g·L-1 algae powder treatment group was the most significant.
salt stresswheatChlamyceous debaryana powderphysiological index
万方数据
维普
