不同種源香椿種子及苗木差異性分析.pdf

1、90G2S分類號密級S7273CK學(xué)位代碼309學(xué)校代碼[0299學(xué)號030202南京林業(yè)大學(xué)尹一“。一”””一”。“1。“””～。一一“一一”一l研究生碩士學(xué)t一，Ⅳ～一√一刪略～4，十，oq。一Nj、’、v位論論文題目：不同種源香椿種子及茁術(shù)差異性分析作者：梁有旺專業(yè)：森林培育研究方向：人工林培育理論指導(dǎo)教師：彭方仁教授=00六年六月TheVariationAnalysisofSeedsandSeedlingsofToonasine

2、nsisinD嘏erentProvenancesAbs訂actToolqasinensisiSonekindoftheendemicprecioustreeswhichgrowfastanddistributesextensivelyinChinaTheseedsofToonasinensisfrom14placesdistributedin13provincesalloverthecountrywerecollected，duetot

3、hepresentsituationofitsextensivedistribution，variousecotypes，lessofplantareasandlowlevelwellbredInthepapertheseedsandone—yearoldseedlingofdifferentprovenancesandindividualswerestudiedassubjectstoanalyzeseedqualityandmeas

4、llrethegrowthcharacteristicsandadaptabilityofseedling，aimingatchoosingToonasinensisseedlingwitllthefeaturesofgrow—fastproductiveandgoodadaptabilityThevariationofseedsofToonasinensiswerefoundedontheresearchbasementofconfi

5、gurationandseedqualitywhichwoddsupportthereferenceforseedsallocation；thesuperiorprovenanceswereselectedwhichadaptedtoJiangsuprovince，afterevaluatingcomprehensivelyalltheseedlingindexwiththemethodsofcorrelationanalysisand

6、facturanalysis；atthemeantime，thegrowthfeaturesofseedlingweremastered，whichwouldsupporttheoryfoundationsforthemanagementofseedlingstageofToonasinensis，andwhichwouldcontributetoprotectandutilizeToonasinensisThemainresultsw

7、ereasfollows：1Thedifferenceoftheseedssizeindifferentprovenanceswasremarkable2TheseedgerminationrateofdifferentprovenancesofToonasinensisWashighHowevertherateoffieldgerminationratewaslowerthanseedgerminationrateandvariedf

8、rom2533percentto5533percentTherateofgerminationwasinaccordancewiththeseedvigorInpractice，themeasurationoftherateofseedgerminationcallbesubstitutedforthatofseedvigor3ThedifferenceofthenutrientingredientcontentsofToonasine

9、nsisseedsofdifferentprovenancesWasremarkable，amongwhichthecontentofproteinsolublesugaramylum，freeaminoacidsandcrudefatrespectivelyvariedfrom12514meCgto93191mg／g，from0048mg／gtoO084mg／g，fromO644％to1804％，from1545to3324mg／g，

10、andfrom26407％to38158％4Thedifferenceoftheheight，basaldiameterandbiomassofone—yearoldseedlingfromdifferentprovenancesofToonasinensiswasevidentlysignificantThegrowthrhythmappearedastheobviousSgrowthcurve5Thegrowthstageofone

11、yearoldseedlingmightbedividedinto4stages，thatWastosayemergencestage，youngseedlingstage，fastgrowingstageandlategrowthstage6Onthebasementofexperimentofseedlingcoldtolerance，itwasfoundthatthecoldtoleranceoftheseedlingfrom8p