Screening and Identification Indices of Salt Tolerance of Hulless Barley Landraces at Seedling Stage
Salt stress is one of the main abiotic stresses faced by crop production,and hulless barley,as a highly salt-tolerant crop,has potential value in improving saline-alkali soil and ensuring food security.In this study,18 Shanghai hulless barley landraces were used as donor materials,and their salt tolerance was screened and identified by investigating four morphological traits of plant height,root length,root stem weight and dry matter weight of above-ground parts,as well as Na4,K+content and Na+/K+ratio physiological traits at the seedling stage.The analysis of variance showed that there were extremely significant differences among different hulless barley landraces and different treatments,and the interaction between different treatments and different hulless barley landraces also reached a very significant level except plant height.The coefficient of variation analysis showed that the coefficients of variation of dry matter weight-related traits were larger,and the coefficients of variation of plant height,K+content and Na+/K+ratio increased under salt stress,while the other traits decreased.Correlation analysis showed that there were significant positive correlations between root length,plant height and dry matter weight of above-ground parts under normal and salt stress conditions.However,the contents of Na+and K+were only significantly positively or negatively correlated with the Na+/K+ratio,respectively.In this study,two hulless barley landraces with strong salt tolerance were obtained,and the relationship between sodium and potassium related traits and salt tolerance of hulless barley was also discussed.
万方数据
维普
