山东农业科学2025，Vol.57Issue(10)：58-63,6.DOI:10.14083/j.issn.1001-4942.2025.10.007
香叶天竺葵纯露对重金属胁迫下烟草种子萌发及幼苗生长的影响
Effects of Pelargonium graveolens Hydrosol on Seed Germination and Seedling Growth of Tobacco under Heavy Metal Stress
摘要
Abstract
To study the effects of Pelargonium graveolens hydrosols on seed germination and seedling growth of tobacco under heavy metal stress,K326 seeds were used as the experimental materials.The seeds were treated with 0,1％,5％,10％and 15％P.graveolens hydrosol under blank,Cr stress and Cd stress treatments.The seed germination,seedling growth quality,and allelopathic effects were measured.The results indicated that the P.graveolens hydrosol exhibited an allelopathic effect of promotion at low concentration and inhibition at high concentration on the seed germination and seedling growth of tobacco.When the concentra-tion was 5％,the root length and shoot length were significantly higher than those of the control group(CK)by 24.32％and 23.09％,and their allelopathic effect indexes were 19.56％and 18.76％.However,at the con-centration of 15％,the allelopathic effect index on germination potential,root length and shoot length reached-40.82％,-23.21％and-19.27％,indicating strong inhibition.Under Cr stress,the addition of 5％P.graveolens hydrosol showed the best mitigating effects on seed germination and seedling growth;the germina-tion potential,root length,shoot length and dry weight were significantly higher than those of the Cr treatment by 11.33％,111.28％,110.66％and 22.93％,and their allelopathic effect index reached 10.18％,52.67％,52.53％and 18.65％.Under Cd stress,the addition of 10％P.graveolens hydrosol showed the best mitigating effects on seed germination and seedling growth;the germination rate,root length,shoot length and dry weight were significantly higher than those of the Cd treatment by 4.32％,87.95％,70.22％and 42.86％,and their allelopathic effect index reached 7.29％,46.79％,41.25％and 30.00％.In conclusion,an appropriate con-centration of P.graveolens hydrosol significantly promoted seed germination and seedling growth of tobacco un-der both conventional and heavy metal stress conditions with the promoting effect on seedling growth higher than seed germination.These results could provide the technical reference for the application of P.graveolens hydrosol in tobacco heavy metal control.关键词
烟草/香叶天竺葵纯露/重金属胁迫/种子萌发/幼苗生长Key words
Tobacco/Pelargonium graveolens hydrosol/Heavy metals stress/Seed germination/Seed-ling growth分类
农业科学引用本文复制引用
管娇,王丽华,何怡,保志娟..香叶天竺葵纯露对重金属胁迫下烟草种子萌发及幼苗生长的影响[J].山东农业科学,2025,57(10):58-63,6.基金项目
国家自然科学基金项目(32160418) （32160418）
云南省科技计划农业联合面上项目(2017FG001-063) （2017FG001-063）
云南省教育厅科学研究基金研究生项目(2020Y161) （2020Y161）
