天津农业科学2025，Vol.31Issue(2)：17-22,6.DOI:10.3969/j.issn.1006-6500.2025.02.004
盐胁迫下外源赤霉素对玉米幼苗生长的缓释作用
The Alleviating Effect of Exogenous Gibberellin on Maize Seedling Growth Under Salt Stress
摘要
Abstract
To explore the alleviating effect of exogenous gibberellin(GA3)on salt stress,different concentrations of GA3(0,20,40,80,and 160 mg·L-1)were applied under the salt stress simulated by sodium chloride,and we measured the morphological and physiologi-cal indexes of corn seedlings.The research results showed that exogenous GA3 increased the leaf area,plant height,root length,and number of root tips of corn seedlings under salt stress,improved the activities of peroxidase(POD)and superoxide dismutase(SOD),the contents of soluble sugars and the relativecontents of chlorophyll.However,it reduced the content of malondialdehyde(MDA).In conclusion,after spraying GA3 on seedlings,the impact of salt stress on the growth and development of seedlings is significantly weak-ened by increasing the physiological activity of seedlings,and the alleviating effect is the most obvious at a concentration of 80 mg·L-1.关键词
玉米/盐胁迫/赤霉素/幼苗生长Key words
corn/salt stress/gibberellin/seedlings grow分类
农业科技引用本文复制引用
乔娇..盐胁迫下外源赤霉素对玉米幼苗生长的缓释作用[J].天津农业科学,2025,31(2):17-22,6.基金项目
山西省高等学校教学改革创新项目(J20231810) （J20231810）
山西省高等学校教学改革创新项目(J20231827) （J20231827）
