Effects of Salt-tolerance Exercise on Survival Rate and Physiological Characteristics of Cherry Tomato Seedlings Under Salt Stress
《北方园艺》[ISSN:1001-0009/CN:23-1247/S]
- Issue:
- 2019年02
- Page:
- 48-54
- Research Field:
- Publishing date:
Info
- Title:
- Effects of Salt-tolerance Exercise on Survival Rate and Physiological Characteristics of Cherry Tomato Seedlings Under Salt Stress
- Author(s):
- SU Meifei; WEI Xiaohong; HAN Ting; MA Wenjing; LUO Qiaojuan
- (College of Life Science and Technology,Gansu Agricultural University,Lanzhou，Gansu 730070)
- Keywords:
- cherry tomato; salt stress; salt tolerance exercise; physiological characteristics
- PACS:
- -
- DOI:
- 10.11937/bfyy.20182123
- Abstract:
- For the serious persecution of colonization of cherry tomato seedlings after saline land transplants,‘Delicious’ cherry tomatoes were used as test materials,and the control group was set,salt-resistant exercise group,and non-salt-resistance exercise group were treated.To study the effect of different incremental salt concentrations (NaCl) on the survival rate and physiological indicators of cherry tomato seedlings at different times.The purpose of this study was to provide an effective way and theoretical basis for the break through of the establishment of cherry tomato in the saline-alkali environment with low survival rate and poor growth and development.The results showed that the salt-tolerant exercise group effectively increased the survival rate of cherry tomato seedlings transplanted to saline-alkali soil (33.32%) compared with the non-salt-resistant exercise group;at the same time,salt-tolerant exercise effectively increased the proline content and activities of superoxide dismutase (SOD),peroxidase (POD) and catalase (CAT) in cherry tomato seedlings,and reduced malondialdehyde.It indicated that salt-tolerant exercise could improve the osmotic damage of the tomato seedlings by increasing the content of osmotic adjustment substances and antioxidant enzyme activities,and reduce the oxidative damage of cell membranes.In addition,this experiment found that the low salt concentration was better than the high salt concentration range,and the range of 50-150 mmol·L-1 NaCl was the most suitable,and the difference of the concentration gradient was more advanced by 25 mmol·L-1 NaCl.
Last Update: 2019-01-24