芍药耐盐性评价与生理响应机制

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中图分类号： S682.1+2 ;Q945.78 文献标识码：A

文章编号：0439-8114（2026）02-0126-07

DOI：10.14088/j.cnki.issn0439-8114.2026.02.019 开放科学（资源服务）标识码（OSID）：

Evaluation of salt tolerance and physiological response mechanisms in Paeonia lactiflora

BAXiao-jian，MAYu，ZHUQing-yi，XIAMei，LUXiao-yan （Jiangsu Agri-animal Husbandry Vocational College，Taizhou 2253oo，Jiangsu，China）

Abstract：Takingtwoherbaceouspeony（PaeonialactifloraPall）cultivars，LanFushi（L）andDaFugui（D），astestmaterials，a potexperimentwasconductedtoinvestigatethegrowthandphysiologicalchangesofherbaceouspeonyunderfiveNaClconcentration treatments（O，0，20，30，40mmol/L）.TheresultsshowedthatthesalttoleranceofLanFushi（L）wastrongerthanatofDa Fugui（D）.WiththeincreaseofNaClconcentration，thephenotypicsore，eafrelativeelectricalconductivity，solubleproteincontent，soluble sugarcontent，malondialdehyde（MDA）contentandperoxidase（POD）activityofbothcultivarsincreasedsignificantly， while the leaf thickness，net photosynthetic rate （ Pn ）and maximum photochemical quantum yield （ Fv/Fm ）decreased significantly. Correlationanalysisindicatedthatthesalt-tolerancephenotypicscorewassignificantlynegativelycorrelatedwithplantheight（ P< （204号 0.05），and extremely significantly negatively correlated with leaf thickness，SPAD value， Pn ， Fv/Fm and leaf relative water content （ P <0.01）.Meanhile，twasextremelysignificantlypositivelyorelatedwithleafrelativeelectricalconductivity，solubleproteicon tent，soluble sugar content，catalase （CAT） activity，POD activity and MDA content（ P<0.01 ），but had no significant correlation with superoxide dismutase（SOD） activity （ P>0.05 ）.Furthermore，stepwise regression analysis was used to establish the optimal linearregressionequation：Salt-toleranephenotypicsore=4.198-3.747×F/Fm，andF/Fmasidentifidasanevaluationiexfor salt tolerance of herbaceous peony.

Keywords：herbaceouspeony（Paeonialactifloraall）；saltstress；physiologicalresponse mechanism；salttoleranceevaluation; maximum photochemical quantum yield（ Fv/Fm ）

王壤盐碱化是制约植物生长的重要非生物环境因素[1]。（剩余10658字）