不同激素处理对荔波杜鹃种子萌发的影响.pdfVIP免费

第５１卷第２期２０２３年６月贵州林业科技GuizhouForestryScienceandTechnologyVol􀆰５１,No􀆰２Jun．,２０２３不同激素处理对荔波杜鹃种子萌发的影响费仕鹏１,周玮２,陈正仁１,黄承玲２∗(１􀆰贵州茂兰国家级自然保护区管理局,贵州荔波５５８４００;２􀆰贵州民族大学生态环境工程学院,贵州贵阳５５００２５)摘要:为了探讨激素种类、浓度及浸种时间对荔波杜鹃(Rhododendronliboense)种子萌发的影响,本文以荔波杜鹃的种子为研究对象,采用６－BA、NAA和GA３三种生长激素在不同浓度及不同浸种时间对其种子萌发进行正交试验研究.结果表明:在２００mg/L的GA３浸种２４h的条件下,荔波杜鹃种子发芽率和发芽势最高,为４６􀆰０％和３２􀆰２４％,通过直观分析与方差分析发现激素种类对荔波杜鹃种子发芽率有极显著影响,浸种时间对发芽率有显著影响,激素浓度对发芽率影响不显著.而激素种类、浸种时间和激素浓度对发芽势的影响不显著.关键词:荔波杜鹃;种子萌发;激素处理;正交试验中图分类号:S６８５􀆰２１文献标识码:AEffectsofdifferenthormonetreatmentsonseedgerminationofRhododendronliboense,acriticallyendangeredplantFEIShipeng１,ZHOUWei２,CHENZhengren１,HUANGChengling２∗(１􀆰MaolanNationalNatureReserveManagementBureauinGuizhou,Libo５５８４００,China;２􀆰CollegeofEco－EnvironmentEngineering,GuizhouMinzuUniversity,Guiyang５５００２５,China)Abstract:Thispaperaimstoinvestigatetheeffectsofhormonetypes,concentrations,andsoakingtimeontheseedgerminationofRhododendronliboense􀆰TheseedsofR􀆰liboenseweretakenastheresearchsubＧjects􀆰Theorthogonalexperimentswereconductedontheseedgerminationusingthehormones(６－ba,NAAandGA３)atdifferentconcentrationsandsoakingtime􀆰Theresultsshowedthattheseedgerminationrateandgerminationenergywerethehighest(４６􀆰０％and３２􀆰２４％)underthe２４－hourimmersionofGA３(２００mg/L)􀆰Thedirectanalysisandvarianceanalysisofgerminationdatademonstratedthatthehormonespeciesposedasignificanteffectonthegerminationrateofseeds,whilethesoakingtimesharedasignificanteffect,buttherewasnosignificanteffectofhormoneconcentration􀆰Furthermore,therewerenosignificanteffectsofhormonetype,soakingtime,andhormoneconcentrationonthegerminationenergy．Keywords...