高双酯碱三尖杉优树选择与苗期子代测定-研究

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1、高双酯碱三尖杉优树选择及苗期子代测定研究plant．3．Harringtonineandhomoharringtoninewasnosignificantlycorrelationswithagesduringtherageofageof(1[ortuneinthesametrees，thecontentofHHTinfruitwashighest，andthetrunkwashigher,Inadifferenttissue，thesequenceisfruit>newleafandbranch>root>perenniall

2、eafandbranch>oneyearoldleafandbranch>cortices>thickbranch．ThecontentofharringtonineandhomoharringtonineinrestingbranchandrootwashighestonJanuary,andharr衲gtonineandhomoharringtonineincorticeswasuptohighestonNovember,soitwasbettertocollectingCephalotaxusfortuneibetween

3、NovemberandJanuary．4．Confirmingthreeplustrees，becausetheprecisionandestimateisthehighest，andestablishingastandardofplustreesaccordingthose．Thecontentofharringtonineandhomoharringtonineincandidatetreeswashigherthanaverageabout25％，selectedthethreetressascontrasttreeswh

4、ichhaveasameageandgrowthnearcandidatetrees，theragewas15to20m，diameterofbreast-heightofplustreeswashigherthanl5％ofcontrastree，theheightwashigherthan5％，consideringbiomassoftheplustrees，thecrownofatreewashigherthanonefourthofheightandlowbranchwasnolessthanonethirdofheig

5、ht．Theindexofothergradewasnolessthanthreesscore，collectivitySCOrewashi曲erthanaverage．Therewere63treeswhichwereconfirmedaplustreesaccordingthosestandard．5．Thecorrelationanalysisofplustreefactorsindicatethattherearemarkedorextrememarkedpositivecorrelationamongchestdiam

6、eter,height，coronalbreadth，heightbelowtwig，thecorrelationisnotcloseanmngdivaricatingdegree．straightlydegree，healthydegree，harringtonineandhomoharringtoninecontentandothercharacters．Withmulti-characterssynthesizedgradeofC．fortunei，theplustreestyleisclassifiedbyusingma

7、incomponentindexmethod．Atlastthereare20plustreesaledefinedmedicineandtimber-usedstyle．and43plustreesaredefinedmedicine-usedstyle．6．Throughestimatingmedicineandtimber-usedplustreesynthesized，thereare7highlyproductivityplustreesbeselected。whichevengainofchestdiameterca

8、nreach70．1％，evengainofheightcanreach30．6％，evengainofstraightdegreecallreach15．3％，evengainofharringtonineandhomoharringtoninecontent