特种经济动植物2026，Vol.29Issue(2)：1-6,6.
混合盐碱胁迫对普通田菁生物学特性的影响研究
Effects of Mixed Salt-Alkali Stress on Biological Characteristics of Sesbania cannabina
摘要
Abstract
To explore the effects of mixed salt-alkali stress on the growth and physiological characteristics of Sesbania cannabina,a sand-vermiculite mixed substrate experiment was conducted with five stress levels(CK,0.26%,0.52%,0.78%,1.04%).Growth,root traits,chlorophyll SPAD value,chlorophyll fluorescence parameters,and relative electrical conductivity were measured at 7,14,and 21 days after treatment.The results showed a low-concentration promotion and high-concentration inhibition pattern,with inhibitory effects intensifying with increasing stress level and duration.Under 0.26%stress,root morphological traits and aboveground dry weight increased significantly(P<0.05).Under 1.04%stress,growth parameters,root traits,Maximum photochemical efficiency(Fv/Fm),Actual photochemical quantum yield of PSII(Y(II)),Photochemical quenching coefficient(qP),SPAD value and relative electrical conductivity were significantly decreased,while Non-photochemical quenching coefficient(NPQ)increased significantly(P<0.05).In summary these results indicate that S.cannabina has certain adaptability to low-level mixed salt-alkali stress,while moderate to high-level stress damages its physiological functions in root architecture,photosynthetic system,and cell membrane stability.关键词
普通田菁/混合盐碱胁迫/生物学特性/光合生理/根系形态Key words
Sesbania cannabina/mixed salt-alkali stress/biological characteristics/photosynthetic physiology/root morphology引用本文复制引用
牛莹,曹宇芝,杨星如,潘茉兰,张林媚,史雷,徐伟洲..混合盐碱胁迫对普通田菁生物学特性的影响研究[J].特种经济动植物,2026,29(2):1-6,6.基金项目
陕西省科技计划项目(项目编号:2024QCY-KXJ-101),陕西省级人才计划项目(项目编号:2025RCGC02),榆林市科学技术研发专项(2025-CXY-119) （项目编号:2024QCY-KXJ-101）
