寒旱农业科学2024，Vol.3Issue(6)：555-559,5.DOI:10.3969/j.issn.2097-2172.2024.06.013
NaCl胁迫对春小麦苗期叶绿素及保护性酶活性的影响
Effects of NaCl Stress on Chlorophyll Contents and Protective Enzyme Activities of Spring Wheat at Seedling Stage
摘要
Abstract
In order to study the salt tolerance and physiological characteristics of spring wheat at seedling stage,aiming to provide theoretical basis for the screening of salt-tolerant varieties,this experiment took 6 spring wheat varieties as materials to study their physiological characteristics and salt tolerance under different NaCl concentrations.The results showed that under high salt stress of 0.9 mol/L and 1.2 mol/L,all varieties withered and died after 20 days or 30 days of stress treatment,indicating that the tolerance concentration of spring wheat to NaCl stress could not be higher than 0.9 mol/L.With the increase of NaCl stress intensity and the extension of NaCl stress time,chlorophyll content decreased gradually,but the difference between 0.3 mol/L and 0.6 mol/L treatment was not significant,indicating that wheat could tolerate 0.6 mol/L NaCl stress at seedling stage.The activity of CAT increased first and then decreased,while the content of MDA and Pro increased,indicating that NaCl stress could induce the activity of protective enzymes in wheat seedling stage.By analyzing the difference of varieties tested,it was found that Ganchun 28 and strain H-5 had strong salt tolerance and could be planted in saline-alkali soil for further experiment.关键词
春小麦/NaCl胁迫/耐盐性/保护酶活性Key words
Spring wheat/NaCl stress/Salt tolerance/Protective enzyme activity分类
农业科技引用本文复制引用
王婵,张文宇,马小乐,侯格平,朱妍钰,马君君,王万鹏,李元昊,吴海燕,惠永芳,刘鹏伟..NaCl胁迫对春小麦苗期叶绿素及保护性酶活性的影响[J].寒旱农业科学,2024,3(6):555-559,5.基金项目
张掖市重大技术攻关揭榜挂帅制项目(ZY2022JBGS08) （ZY2022JBGS08）
甘肃省教育厅产业支撑计划项目(2021CYZC-12) （2021CYZC-12）
甘肃省农业科技支撑项目(KJZC-2023-2) （KJZC-2023-2）
甘肃农业大学2024年SIETP项目(202401039、202401038). （202401039、202401038）
