寒旱农业科学2024，Vol.3Issue(9)：843-847,5.DOI:10.3969/j.issn.2097-2172.2024.09.012
PEG-6000模拟干旱胁迫对小叶黑柴胡幼苗生理特性的影响
Effects of PEG-6000 Simulated Drought Stress on Physiological Characteristics of Bupleurum smithii var.Parvifolium Seedlings
摘要
Abstract
By exploring the response of Bupleurum smithii var.parvifolium to drought stress,this study provides scientific evidence for comprehensively evaluating its drought tolerance,further offering technical guidance for field cultivation.Using Bupleurum smithii var.parvifolium seedlings as experimental materials,the drought stress was simulated with PEG-6000,and the effects of drought on leaf antioxidant enzyme activity,cell membrane permeability,and osmotic regulatory substances were studied.The results showed that with increasing PEG-6000 concentrations(0 to 25%),the activities of superoxide dismutase(SOD),peroxidase(POD),catalase(CAT),as well as contents of malondialdehyde(MDA),free proline(Pro),and soluble sugar in the leaves all exhibited similar trends,first increasing and then decreasing,although the peak values varied slightly.The MDA content continued to increase as the PEG-6000 stress reached its highest concentration(25%).Overall,the study concluded that Bupleurum smithii var.parvifolium possesses certain drought tolerance and can maintain osmotic stress resistance and reactive oxygen species scavenging abilities under moderate drought stress,thereby maintaining membrane stability.关键词
小叶黑柴胡/PEG-6000/干旱胁迫/抗旱性/生理特性Key words
Bupleurum smithii var.parvifolium/PEG-6000/Drought stress/Drought resistance/Physiological characteristic分类
农业科技引用本文复制引用
张立军,彭云霞,张东佳,白波,王国祥,牛家瑜..PEG-6000模拟干旱胁迫对小叶黑柴胡幼苗生理特性的影响[J].寒旱农业科学,2024,3(9):843-847,5.基金项目
兰州市人才创新创业项目(2023-RC-24) （2023-RC-24）
中央引导地方科技发展资金项目(22ZY1QA001). （22ZY1QA001）
