桑寄生种子萌发过程中的生理生化变化

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关键词：桑寄生（Taxilluschinensis）；种子；果胶；萌发过程；生理生化指标

中图分类号：S567.19；Q945.34 文献标识码：A

文章编号：0439-8114（2025）05-0083-07

DOI：10.14088/j.cnki.issn0439-8114.2025.05.013 开放科学（资源服务）标识码（OSID）：

Physiological and biochemical studies on germination dynamics of Taxillus chinensis seeds

FENGChang-cun1，LIANG Lu2 ，LIANGWen-jing³，GUILing-jian³，SONGLi-sha³， PAN Li-mei，FU Jin- e3 ，WANLing-yun³，WEI Shu-gen1.3

（1.SchoolofPaacyuagieicalUvesityainoina;GradateClgangiUiersityfseii

Naning53O2O，China;GuangxiBotanicalGardenofMedicinalPlants/GuangxiKeyLaboratoryofHigqualityFomatioandUtilaif Dao-di Herbs，Nanning 530023，China）

Abstract：UsingTaxiluschinensisseeds withpectinasthecontrolgroupandde-pectinatedseedsas thetreated group，samples were collected at 0 ，5，10，15，2O，and25daysofcultivation.Thenrelevantphysiologicalandbiochemical indicators were determinedand comparativelyanalyed.Theresultsshowedthatthepolysaccaridecontentinthecontrolexhibitedaniitialincreaseandtefollowedbyadecrease，whilethede-pectinated treatmentshowedacontinuousdecliningtrend.Thesolublesugarcontentinbothgroups displayedadecreaseincrease-deceasepater，withsignificantlyowerlevelsobseredinthd-pectiatedtreatmentcoparedto thecontrolthroughout thegerminationpross.TheMDAcontentinthecontrolgroupshowedanupwardtrend，hileinthedepectinatedgroup，adownward-upward-downwardtrend was exhibitedand itwas mostlylowerthanthatinthecontrolduring germination. Thecontent of H2O2 and 02- showed similar trends in both groups，but thecontent inthede-pectinated group was mostly higher than thatinthecontrolduringgermination.TheactivitiesofSOD，ODandPALexhibitedsimilartrendsinbothgroups.TheSODactivity inthede-pectinatedgroupwasconsistentlyhigherthanthatinthecontrol，whilePODandPALactivities，lthoughlowerhanthose in the control，showed a continuous upward trend. The endogenous hormone content （IAA，ABA， GA3 ，ZR）exhibited fluctuating changesinbothgroups，withthecontrolgroupshowingageneraldowwardtrend，whilethede-pectinatedgroupshowedasignificant increaseandageneralupwardtrend.Itwaspreliminarilyconfirmedthatpectinremovalcouldpromotetherapidmobilizationoftored substances，enzymesandendogenous hormones intheseedsofTaxiluschinensis，promoting thesmooth germinationofseeds.

KeyWords：Taxillus chinensis；seed;pectin；germinationprocess；physiological and biochemical indicators

桑寄生（Taxilluschinensis）属于桑寄生科钝果寄生属植物，主要分布于广西、广东、云南、四川以及贵州等地，是传统的常用大宗中药材。（剩余10092字）