贵州农业科学2025，Vol.53Issue(9)：1-10,10.DOI:10.3969/j.issn.1001-3601.2025.09.001
不同温度与盐浓度对甘草种子萌发与幼苗生理指标的影响
Effects of Different Temperatures and Salt Concentrations on Seed Germination and Seedling Physiological Indexes of Glycyrrhiza uralensis
摘要
Abstract
[Objective]The effects of seed-soaking temperature,cultivation temperature and salt concentration on seed germination and seedling physiological indexes of Glycyrrhiza uralensis were explored to provide a theoretical basis for seedling cultivation and field management.[Method]The germination experiments of G.uralensis seeds were conducted to compare the effects of different temperatures,and NaCl and Na2SO4 at varying concentrations on seed germination,seedling growth indexes,and physiological indexes.[Result]Seed germination was significantly influenced by temperature,with optimal results observed at 25 ℃for both seed soaking and cultivation.Both NaCl and Na2SO4 followed similar trends,showing low concentrations promoted germination,while high concentrations inhibited it.45 mmol/L NaCl and Na2SO4 significantly enhanced seed germination,with NaCl showing a stronger promotive effect.These treatments also significantly increased radicle growth(but not hypocotyl width)and elevated MDA and Pro content,alongside boosting CAT,POD,and SOD activities,thereby improving seedling growth.Under NaCl stress,radicle length and hypocotyl width were negatively correlated with MDA content,Pro content,and POD activity,but positively correlated with SOD activity.Under Na2SO4 stress,both radicle length and hypocotyl width showed significant negative correlations with Pro content and POD activity,and negative correlations with MDA content,CAT activity and SOD activity.[Conclusion]G.uralensis seeds should be soaked and cultured at 25℃.Under this condition,45 mmol/L NaCl and Na2SO4 stress had the best performance on G.uralensis seed germination index,seedling radicle growth and physiological index,which can be popularized and applied in G.uralensis seed seedling.关键词
甘草/温度/盐胁迫/相对盐害率/种子萌发/幼苗生长/NaCl/Na2SO4Key words
Glycyrrhiza uralensis/temperature/salt stress/relative salt injury rate/seed germination/seedling growth/NaCl/Na2SO4分类
农业科技引用本文复制引用
曹阳,张奥,陆斌,张传领,薛焱,贾鑫,王晓琴..不同温度与盐浓度对甘草种子萌发与幼苗生理指标的影响[J].贵州农业科学,2025,53(9):1-10,10.基金项目
内蒙古医科大学2022年度校级科研项目"基于表型组学的甘草生长监测和质量评价研究"(YKD2022MS031) （YKD2022MS031）
内蒙古自治区科技计划项目"基于遥感技术的内蒙古道地药材产量预测与质量评价研究"(2022YFSJ0006) （2022YFSJ0006）
内蒙古医科大学"致远"人才项目"基于多表型组学的蒙古黄芪苗期水分状况动态监测及其响应机制研究"(ZY20243106) （ZY20243106）
