Effects of Waterlogging Stress on Physiological Characteristics of Ziziphus acidojujuba Mill. Seedlings
The potted Ziziphus acidojujuba Mill.seedlings were treated with normal (control) and waterlogging,to investigate the effects of wa-terlogging stress on physiological characteristics of jujube seedlings.The differences of physiological index of leaves and roots of jujube seed-lings during growth between the groups of waterlogging and control were compared and analyzed. The results showed that compared with the control,the contents of chlorophyll and soluble protein in leaves at middle and late stages were significantly reduced by waterlogging stress,and the decreases were 22.82％ and 32.88％,respectively,on the 12th day of treatment,while the carotenoid content had no significant effect.The relative conductivity and H2O2 content of leaves treated with waterlogging were increased by 3.16 percentage point and 18.89％ at 3th day,re-spectively,in comparison with control. The contents of malondialdehyde and proline of leaves treated with waterlogging were increased by 22.74％ and 88.99％,respectively,at the 9th day,compared with control. The CAT and POD activities of jujube seedlings after waterlogging were significantly decreased,whereas SOD activity was increased at 12th day. The activity and plasma membrane permeability of roots under waterlogging stress were significantly decreased,and the decreases were 37.18％ and 24.81 percentage point at the 9th day,compared with the control.In conclusion,jujube seedlings showed good adaptability to waterlogging stress by adjusting physiological metabolism of leaves and roots.
万方数据
维普
