nacl胁迫对辣椒种子、幼苗生长发育和叶绿素荧光特性的影响

《nacl胁迫对辣椒种子、幼苗生长发育和叶绿素荧光特性的影响》由会员上传分享，免费在线阅读，更多相关内容在学术论文-天天文库。

1、万方数据AbstractEightcapsicumcultivarsarechosetobethematerials，tlleyareMeiJia、ZaoLaWang、QiangFen97301、BaoXi、QiuYan、YiXianTian、FuChengQingJiaoF1andJiangHuanno．2．OurExperimentisdesignedtotestthegerminationrateunderNaCIstress．Accordingtothegerminationpotential，germinationrate，germinationind

2、ex，vitalityindexandrelativerateofsaltinjury，wewillfilterhaloduriccultivarandweaksaltresistancecultivar,Wewillexplorethedifferenceofresistancetosaltinseedlingstagebytestphysiologicalandbiochemicalindexesandchlorophyllfluorescencecharacteristicofthetwokindscultivars．Themainresearchresu

3、ltsareasfollows：ThedegreeoftheNaCIstressinfluenceontheei【ghtcultivarswasdifferent，althoughthegerminationstagewasallapparentlyaffectedbytheNaCIstress．WhentheconcentrationofNaClwas50mmol·L-1thegerminationratewashigherthanthecontrol，whiletheconcentrationof‘NaClwas250mmol·L-l，thephenomen

4、onwasinreverse．HowevertheinfluenceofNaClstressongerminationpotentialwereevenmoreapparent，whentheconcentrationofNaClwasabove150mmol·L-1，itwillpostponethegerminationoftheseeds．Accordingtothecomprehensiveanalysisoftheindexes，wefoundthatQiangFen9730lhasthehighestabilityofNaCltolerance，Me

5、iJia，ZaoJiaoWang，BaoXi，YiXianTian，FuChengQingJiaoF1andJiangHuaino．2comesecond，whileQiuYancomesthird．Duringtheperiodofthepepperseedlingsgrowth，lowNaCIconcentrationhasaneffectonthepartofthepeppervarietiesthatpromotetheplantgrowth，whileastheconcentrationincreasing，theplantwillshowthesym

6、ptomsofNaClinjury．Underthesameconcentration，differentpeppervarietieshavedifferentreflection，whenwithhigherNaCIconcentration，QiangFen97301andMeiJiahavelowerrelativeNaC!injuryrate，whileQiuYanandFuChengQingJiaoFlhavehigherrelativeNaC!injuryrate．UndertheNaCIstress，theactivityoftheprotect

7、iveenzymeSOD，PODandCATallhaveaupwardtendencyinthetwovarietieswhichshowdifferenttolerancetotheNaCI．Whenthestresscometoacertaindegree，theactivityoftheprotectiveenzymedecreased．WhenunderhigherNaClconcentration，theactivityoftheprotectiveIII万方数据enzymeSOD，PODandCATintheQiangFen97301whichha

8、veahighertol