中国瓜菜2026，Vol.39Issue(6)：201-207,7.DOI:10.16861/j.cnki.zggc.2025.0722
干旱胁迫对沙葱光合和生理指标的影响
Effects of drought stress on photosynthetic and physiological indices of Allium mongolicum
摘要
Abstract
In order to clarify the photosynthetic response mechanism and physiological adaptation strategy of Allium mon-golicum,a sandy vegetable,in response to drought stress and to provide a theoretical basis for the water-saving cultivation of this species in arid and semi-arid areas,three-year-old seedlings of this species were used as test materials.Four drought treatment gradients were set up by pot culture and water control method,with soil relative water contents of 78.00％(CK),65.00％(LS),45.00％(MS)and 25.00％(SS),respectively.The results showed that compared with CK,the LS treatment significantly reduced root length by 19.78％,while plant height was slightly higher than that of CK.The activities of Rubisco,PEPC,PPDK,and NAD-ME increased by 17.00％,12.98％,11.97％,and 87.12％,respectively.Sol-uble sugar contents in leaves and roots increased by 24.17％and 78.30％,respectively.In contrast,the growth of A.mon-golicum was inhibited under MS and SS treatments.Specifically,under SS treatment,root length and plant height de-creased by 29.36％and 21.19％,respectively,compared with CK;the ETR of the photosystem II reaction center was low-er than that of CK,and the quantum yield of regulated energy dissipation at PS II(Y(NPQ))was 38.68％the highest,These results indicate that A.mongolicum is not suitable for growth under MS and SS treatments.Under LS treatment,however,the plant maintains metabolic balance by increasing leaf PEPC activity and transports soluble sugars(fructose,sucrose)to the roots,thereby enhancing the adaptability of the root system to drought stress.In summary,under LS treat-ment,A.mongolicum exhibits active adaptability,making it suitable for promotion and application in water-saving produc-tion systems.关键词
沙葱/干旱胁迫/光合作用/生理指标Key words
Allium mongolicum/Drought stress/Photosynthesis/Physiological indicator分类
农业科技引用本文复制引用
张东,旭花,刘建文,张凤兰,张晓艳,曹镇宇,高嘉琦,李佳乐,杨忠仁..干旱胁迫对沙葱光合和生理指标的影响[J].中国瓜菜,2026,39(6):201-207,7.基金项目
内蒙古自然科学基金(2025QN03014、2024LHMS03058) （2025QN03014、2024LHMS03058）
内蒙古自治区重点研发和成果转化计划项目(2025YFHH0171) （2025YFHH0171）
阿拉善盟科技计划项目(AMKJ2025-10) （AMKJ2025-10）
内蒙古农业大学高层次及优秀博士人才引进科研启动项目(NDYB2023-49) （NDYB2023-49）
